[lldb] Change SymbolContext::GetAddressRangeFromHereToEndLine to return Expected (NFC)

lldb/include/lldb/Symbol/SymbolContext.h

@@ -201,8 +201,8 @@ class SymbolContext {
   bool GetAddressRange(uint32_t scope, uint32_t range_idx,
                        bool use_inline_block_range, AddressRange &range) const;
 
-  bool GetAddressRangeFromHereToEndLine(uint32_t end_line, AddressRange &range,
-                                        Status &error);
+  llvm::Expected<bool> GetAddressRangeFromHereToEndLine(uint32_t end_line,
+                                                        AddressRange &range);
 
   /// Find the best global data symbol visible from this context.
   ///

lldb/source/API/SBThread.cpp

@@ -605,8 +605,14 @@ void SBThread::StepInto(const char *target_name, uint32_t end_line,
     if (end_line == LLDB_INVALID_LINE_NUMBER)
       range = sc.line_entry.range;
     else {
-      if (!sc.GetAddressRangeFromHereToEndLine(end_line, range, error.ref()))
+      auto get_address_range_from_here_to_end_line_or_err =
+          sc.GetAddressRangeFromHereToEndLine(end_line, range);
+      if (!get_address_range_from_here_to_end_line_or_err) {
+        error = Status::FromErrorString(
+            toString(get_address_range_from_here_to_end_line_or_err.takeError())
+                .c_str());
         return;
+      }
     }
 
     const LazyBool step_out_avoids_code_without_debug_info =

lldb/source/Commands/CommandObjectThread.cpp

@@ -489,11 +489,14 @@ class CommandObjectThreadStepWithTypeAndScope : public CommandObjectParsed {
         AddressRange range;
         SymbolContext sc = frame->GetSymbolContext(eSymbolContextEverything);
         if (m_options.m_end_line != LLDB_INVALID_LINE_NUMBER) {
-          Status error;
-          if (!sc.GetAddressRangeFromHereToEndLine(m_options.m_end_line, range,
-                                                   error)) {
-            result.AppendErrorWithFormat("invalid end-line option: %s.",
-                                         error.AsCString());
+          auto get_address_range_from_here_to_end_line_or_err =
+              sc.GetAddressRangeFromHereToEndLine(m_options.m_end_line, range);
+          if (!get_address_range_from_here_to_end_line_or_err) {
+            result.AppendErrorWithFormat(
+                "invalid end-line option: %s.",
+                toString(
+                    get_address_range_from_here_to_end_line_or_err.takeError())
+                    .c_str());
             return;
           }
         } else if (m_options.m_end_line_is_block_end) {

lldb/source/Symbol/SymbolContext.cpp

@@ -706,20 +706,18 @@ LineEntry SymbolContext::GetFunctionStartLineEntry() const {
   return LineEntry();
 }
 
-bool SymbolContext::GetAddressRangeFromHereToEndLine(uint32_t end_line,
-                                                     AddressRange &range,
-                                                     Status &error) {
+llvm::Expected<bool>
+SymbolContext::GetAddressRangeFromHereToEndLine(uint32_t end_line,
+                                                AddressRange &range) {
   if (!line_entry.IsValid()) {
-    error = Status::FromErrorString("Symbol context has no line table.");
-    return false;
+    return llvm::createStringError("Symbol context has no line table.");
   }
 
   range = line_entry.range;
   if (line_entry.line > end_line) {
-    error = Status::FromErrorStringWithFormat(
+    return llvm::createStringError(
         "end line option %d must be after the current line: %d", end_line,
         line_entry.line);
-    return false;
   }
 
   uint32_t line_index = 0;
@@ -740,29 +738,26 @@ bool SymbolContext::GetAddressRangeFromHereToEndLine(uint32_t end_line,
   if (!found) {
     // Can't find the index of the SymbolContext's line entry in the
     // SymbolContext's CompUnit.
-    error = Status::FromErrorString(
+    return llvm::createStringError(
         "Can't find the current line entry in the CompUnit - can't process "
         "the end-line option");
-    return false;
   }
 
   line_index = comp_unit->FindLineEntry(line_index, end_line, nullptr, false,
                                         &end_entry);
   if (line_index == UINT32_MAX) {
-    error = Status::FromErrorStringWithFormat(
+    return llvm::createStringError(
         "could not find a line table entry corresponding "
         "to end line number %d",
         end_line);
-    return false;
   }
 
   Block *func_block = GetFunctionBlock();
   if (func_block && func_block->GetRangeIndexContainingAddress(
                         end_entry.range.GetBaseAddress()) == UINT32_MAX) {
-    error = Status::FromErrorStringWithFormat(
+    return llvm::createStringError(
         "end line number %d is not contained within the current function.",
         end_line);
-    return false;
   }
 
   lldb::addr_t range_size = end_entry.range.GetBaseAddress().GetFileAddress() -