GN generator for GYP actions

tools/gn/gyp_target_writer.h

 // 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.
 
 #ifndef TOOLS_GN_GYP_TARGET_WRITER_H_
 #define TOOLS_GN_GYP_TARGET_WRITER_H_
 
 #include <iosfwd>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "tools/gn/gyp_helper.h"
+#include "tools/gn/path_output.h"
 
 class BuilderRecord;
 class Err;
 class Settings;
 class SourceFile;
 class Target;
 
 class GypTargetWriter {
  public:
   struct TargetGroup {
     TargetGroup()
         : debug(NULL),
           release(NULL),
           host_debug(NULL),
           host_release(NULL) {
     }
     const BuilderRecord* debug;
     const BuilderRecord* release;
     const BuilderRecord* host_debug;
     const BuilderRecord* host_release;
   };
 
-  GypTargetWriter(const Target* target, std::ostream& out);
+  GypTargetWriter(const Target* target,
+                  const SourceDir& gyp_dir,
+                  std::ostream& out);
   virtual ~GypTargetWriter();
 
   static void WriteFile(const SourceFile& gyp_file,
                         const std::vector<TargetGroup>& targets,
                         Err* err);
 
   virtual void Run() = 0;
 
  protected:
+  // Writes the given number of spaces to the output stream and returns it.
+  std::ostream& Indent(int spaces);
+  static std::ostream& Indent(std::ostream& out, int spaces);
+
+  static const int kExtraIndent = 2;
+
   const Settings* settings_;  // Non-owning.
   const Target* target_;  // Non-owning.
+  SourceDir gyp_dir_;  // Dir of GYP file.
   std::ostream& out_;
 
   GypHelper helper_;
+  PathOutput path_output_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(GypTargetWriter);
 };
 
 #endif  // TOOLS_GN_GYP_TARGET_WRITER_H_