GN threading refactor

tools/gn/gyp_target_writer.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "tools/gn/gyp_target_writer.h"
 
 #include <iostream>
 
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "tools/gn/build_settings.h"
+#include "tools/gn/builder_record.h"
 #include "tools/gn/filesystem_utils.h"
 #include "tools/gn/gyp_binary_target_writer.h"
 #include "tools/gn/scheduler.h"
 #include "tools/gn/settings.h"
 #include "tools/gn/target.h"
 
 GypTargetWriter::GypTargetWriter(const Target* target, std::ostream& out)
     : settings_(target->settings()),
       target_(target),
       out_(out) {
 }
 
 GypTargetWriter::~GypTargetWriter() {
 }
 
 // static
 void GypTargetWriter::WriteFile(const SourceFile& gyp_file,
                                 const std::vector<TargetGroup>& targets,
                                 Err* err) {
   if (targets.empty())
     return;
-  const BuildSettings* debug_build_settings =
-      targets[0].debug->settings()->build_settings();
+  const Settings* debug_settings =
+      targets[0].debug->item()->AsTarget()->settings();
+  const BuildSettings* debug_build_settings = debug_settings->build_settings();
 
   std::stringstream file;
   file << "# Generated by GN. Do not edit.\n\n";
   file << "{\n";
   file << "  'skip_includes': 1,\n";
 
-  if (targets[0].debug->settings()->IsMac()) {
+  if (debug_settings->IsMac()) {
     // Global settings for make/ninja. This must match common.gypi :(
     file << "  'make_global_settings': [\n";
     file << "    ['CC', 'third_party/llvm-build/Release+Asserts/bin/clang'],\n";
     file <<
         "    ['CXX', 'third_party/llvm-build/Release+Asserts/bin/clang++'],\n";
     file << "    ['CC.host', '$(CC)'],\n";
     file << "    ['CXX.host', '$(CXX)'],\n";
     file << "  ],\n";
   }
   // TODO(brettw) android.
 
   file << "  'targets': [\n";
 
   for (size_t i = 0; i < targets.size(); i++) {
-    switch (targets[i].debug->output_type()) {
+    const Target* cur = targets[i].debug->item()->AsTarget();
+    switch (cur->output_type()) {
       case Target::COPY_FILES:
       case Target::CUSTOM:
       case Target::GROUP:
         break;  // TODO(brettw)
       case Target::EXECUTABLE:
       case Target::STATIC_LIBRARY:
       case Target::SHARED_LIBRARY:
       case Target::SOURCE_SET: {
         GypBinaryTargetWriter writer(targets[i], file);
         writer.Run();
         break;
       }
       default:
         CHECK(0);
     }
   }
 
   file << "  ],\n}\n";
 
   base::FilePath gyp_file_path = debug_build_settings->GetFullPath(gyp_file);
   std::string contents = file.str();
   file_util::WriteFile(gyp_file_path, contents.c_str(),
                        static_cast<int>(contents.size()));
 }