GN support for generating VS2013 project files

tools/gn/visual_studio_writer.h

 // Copyright 2016 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.
 
 #ifndef TOOLS_GN_VISUAL_STUDIO_WRITER_H_
 #define TOOLS_GN_VISUAL_STUDIO_WRITER_H_
 
 #include <iosfwd>
 #include <string>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 
 namespace base {
 class FilePath;
 }
 
 class Builder;
 class BuildSettings;
 class Err;
 class Target;
 
 class VisualStudioWriter {
  public:
+  enum Version {
+    Vs2013 = 1,  // Visual Studio 2013
+    Vs2015       // Visual Studio 2015
+  };
+
   // On failure will populate |err| and will return false.
   static bool RunAndWriteFiles(const BuildSettings* build_settings,
                                Builder* builder,
+                               Version version,
                                Err* err);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(VisualStudioWriterTest, ResolveSolutionFolders);
   FRIEND_TEST_ALL_PREFIXES(VisualStudioWriterTest,
                            ResolveSolutionFolders_AbsPath);
 
   // Solution project or folder.
   struct SolutionEntry {
     SolutionEntry(const std::string& name,
@@ skipping 21 matching lines @@
 
     // Absolute label dir path.
     std::string label_dir_path;
     // Configuration platform. May be different than solution config platform.
     std::string config_platform;
   };
 
   using SolutionProjects = std::vector<SolutionProject*>;
   using SolutionFolders = std::vector<SolutionEntry*>;
 
-  explicit VisualStudioWriter(const BuildSettings* build_settings);
+  explicit VisualStudioWriter(const BuildSettings* build_settings,
+                              Version version);
   ~VisualStudioWriter();
 
   bool WriteProjectFiles(const Target* target, Err* err);
   bool WriteProjectFileContents(std::ostream& out,
                                 const SolutionProject& solution_project,
                                 const Target* target,
                                 Err* err);
   void WriteFiltersFileContents(std::ostream& out, const Target* target);
   bool WriteSolutionFile(Err* err);
   void WriteSolutionFileContents(std::ostream& out,
                                  const base::FilePath& solution_dir_path);
 
   // Resolves all solution folders (parent folders for projects) into |folders_|
   // and updates |root_folder_dir_|. Also sets |parent_folder| for |projects_|.
   void ResolveSolutionFolders();
 
   const BuildSettings* build_settings_;
 
+  // Toolset version.
+  const char* toolset_version_;
+
+  // Project version.
+  const char* project_version_;
+
+  // Visual Studio version string.
+  const char* version_string_;
+
   // Indicates if project files are generated for Debug mode configuration.
   bool is_debug_config_;
 
   // Platform for solution configuration (Win32, x64). Some projects may be
   // configured for different platform.
   std::string config_platform_;
 
   // All projects contained by solution.
   SolutionProjects projects_;
 
   // Absolute root solution folder path.
   std::string root_folder_path_;
 
   // Folders for all solution projects.
   SolutionFolders folders_;
 
   // Semicolon-separated Windows SDK include directories.
   std::string windows_kits_include_dirs_;
 
   DISALLOW_COPY_AND_ASSIGN(VisualStudioWriter);
 };
 
 #endif  // TOOLS_GN_VISUAL_STUDIO_WRITER_H_