From 046bdd0adbd0c7259ee0bd19e01091c25f043cde Mon Sep 17 00:00:00 2001
From: Hirokazu MORIKAWA <morikw2@gmail.com>
Date: Mon, 3 May 2021 10:00:38 +0900
Subject: [PATCH] Support for swig 4.1.0

In swig 4.1.0, the complicated handling of "SWIG_V8_VERSION" has been cleaned up a bit. I made the same changes as in this swig.

Signed-off-by: Hirokazu MORIKAWA <morikw2@gmail.com>
---
 api/mraa/gpio.hpp             |  4 ++++
 src/javascript/CMakeLists.txt |  7 +++++-
 src/javascript/mraajs.i       | 42 +++++++++++++++++------------------
 3 files changed, 31 insertions(+), 22 deletions(-)

diff --git a/api/mraa/gpio.hpp b/api/mraa/gpio.hpp
index c0b546c69..8fc088162 100644
--- a/api/mraa/gpio.hpp
+++ b/api/mraa/gpio.hpp
@@ -186,7 +186,11 @@ class Gpio
         v8::Local<v8::Value> argv[] = { SWIGV8_INTEGER_NEW(-1) };
 #if NODE_MODULE_VERSION >= 0x000D
         v8::Local<v8::Function> f = v8::Local<v8::Function>::New(v8::Isolate::GetCurrent(), This->m_v8isr);
+#if (V8_MAJOR_VERSION-0) < 4
         f->Call(SWIGV8_CURRENT_CONTEXT()->Global(), argc, argv);
+#else
+        f->Call(SWIGV8_CURRENT_CONTEXT(), SWIGV8_CURRENT_CONTEXT()->Global(), argc, argv);
+#endif
 #else
         This->m_v8isr->Call(SWIGV8_CURRENT_CONTEXT()->Global(), argc, argv);
 #endif
diff --git a/src/javascript/CMakeLists.txt b/src/javascript/CMakeLists.txt
index 99a96b49d..5dbe2af38 100644
--- a/src/javascript/CMakeLists.txt
+++ b/src/javascript/CMakeLists.txt
@@ -43,7 +43,12 @@ if (BUILDCPP)
     message (STATUS "INFO - Using V8 version > 3 so requiring C++11 compiler")
     # Node 0.12.x V8 engine major version is '3'.
     # Node 2.1.0  V8 engine major version is '4'.
-    set_property (TARGET mraajs PROPERTY CXX_STANDARD 11)
+    # Node 16.0.0  V8 engine major version is '9'.
+    if (${V8_VERSION_MAJOR} GREATER 8)
+      set_property (TARGET mraajs PROPERTY CXX_STANDARD 14)
+    else ()
+      set_property (TARGET mraajs PROPERTY CXX_STANDARD 11)
+    endif ()
     set_property (TARGET mraajs PROPERTY CXX_STANDARD_REQUIRED ON)
     if (CMAKE_VERSION VERSION_LESS "3.1")
       message (WARNING "Need to use CMAKE version 3.1+, but it is ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}.${CMAKE_PATCH_VERSION}, using a workaround.")
diff --git a/src/javascript/mraajs.i b/src/javascript/mraajs.i
index 321cc2213..4d9949c10 100644
--- a/src/javascript/mraajs.i
+++ b/src/javascript/mraajs.i
@@ -42,18 +42,18 @@ namespace mraa {
 class Spi;
 %typemap(out) uint8_t*
 {
-%#if SWIG_V8_VERSION > 0x040000
+%#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION <= 0x032870)
+  $result = node::Buffer::New((char*) result, arg3)->handle_;
+  free(result);
+%#elif (V8_MAJOR_VERSION-0) < 4
+  $result = node::Buffer::New((char*) result, arg3);
+  free(result);
+%#else
    v8::MaybeLocal<v8::Object> objret = node::Buffer::Copy(v8::Isolate::GetCurrent(), (char*) result, arg3);
    free(result);
    if(!objret.ToLocal(&$result)){
 	SWIG_exception_fail(SWIG_ERROR, "Spi buffer failed");
    }
-%#elif SWIG_V8_VERSION > 0x032870
-  $result = node::Buffer::New((char*) result, arg3);
-  free(result);
-%#else
-  $result = node::Buffer::New((char*) result, arg3)->handle_;
-  free(result);
 %#endif
 }
 }
@@ -81,18 +81,18 @@ class Spi;
        free($1);
        SWIG_exception_fail(SWIG_ERROR, "Uart write failed");
    }
-%#if SWIG_V8_VERSION > 0x040000
-   v8::MaybeLocal<v8::Object> objret = node::Buffer::Copy(v8::Isolate::GetCurrent(), (char*) $1, result);
+%#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION <= 0x032870)
+   $result = node::Buffer::New((char*) $1, result)->handle_;
    free($1);
-   if(!objret.ToLocal(&$result)) {
-      SWIG_exception_fail(SWIG_ERROR, "Uart buffer failed");
-   }
-%#elif SWIG_V8_VERSION > 0x032870
+%#elif (V8_MAJOR_VERSION-0) < 4
    $result = node::Buffer::New((char*) $1, result);
    free($1);
 %#else
-   $result = node::Buffer::New((char*) $1, result)->handle_;
+   v8::MaybeLocal<v8::Object> objret = node::Buffer::Copy(v8::Isolate::GetCurrent(), (char*) $1, result);
    free($1);
+   if(!objret.ToLocal(&$result)) {
+      SWIG_exception_fail(SWIG_ERROR, "Uart buffer failed");
+   }
 %#endif
 
 }
@@ -116,18 +116,18 @@ class Spi;
        free($1);
        SWIG_exception_fail(SWIG_ERROR, "I2c write failed");
    }
-%#if SWIG_V8_VERSION > 0x040000
-   v8::MaybeLocal<v8::Object> objret = node::Buffer::Copy(v8::Isolate::GetCurrent(), (char*) $1, result);
+%#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION <= 0x032870)
+   $result = node::Buffer::New((char*) $1, result)->handle_;
    free($1);
-   if(!objret.ToLocal(&$result)) {
-      SWIG_exception_fail(SWIG_ERROR, "I2c buffer failed");
-   }
-%#elif SWIG_V8_VERSION > 0x032870
+%#elif (V8_MAJOR_VERSION-0) < 4
    $result = node::Buffer::New((char*) $1, result);
    free($1);
 %#else
-   $result = node::Buffer::New((char*) $1, result)->handle_;
+   v8::MaybeLocal<v8::Object> objret = node::Buffer::Copy(v8::Isolate::GetCurrent(), (char*) $1, result);
    free($1);
+   if(!objret.ToLocal(&$result)) {
+      SWIG_exception_fail(SWIG_ERROR, "I2c buffer failed");
+   }
 %#endif
 }