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      1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef TOOLS_GN_NINJA_BUILD_WRITER_H_
      6 #define TOOLS_GN_NINJA_BUILD_WRITER_H_
      7 
      8 #include <iosfwd>
      9 #include <vector>
     10 
     11 #include "tools/gn/ninja_helper.h"
     12 #include "tools/gn/path_output.h"
     13 
     14 class BuildSettings;
     15 class Settings;
     16 class Target;
     17 
     18 // Generates the toplevel "build.ninja" file. This references the individual
     19 // toolchain files and lists all input .gn files as dependencies of the
     20 // build itself.
     21 class NinjaBuildWriter {
     22  public:
     23   static bool RunAndWriteFile(
     24       const BuildSettings* settings,
     25       const std::vector<const Settings*>& all_settings,
     26       const std::vector<const Target*>& default_toolchain_targets);
     27 
     28  private:
     29   NinjaBuildWriter(const BuildSettings* settings,
     30                    const std::vector<const Settings*>& all_settings,
     31                    const std::vector<const Target*>& default_toolchain_targets,
     32                    std::ostream& out,
     33                    std::ostream& dep_out);
     34   ~NinjaBuildWriter();
     35 
     36   void Run();
     37 
     38   void WriteNinjaRules();
     39   void WriteSubninjas();
     40   void WritePhonyAndAllRules();
     41 
     42   const BuildSettings* build_settings_;
     43   std::vector<const Settings*> all_settings_;
     44   std::vector<const Target*> default_toolchain_targets_;
     45   std::ostream& out_;
     46   std::ostream& dep_out_;
     47   PathOutput path_output_;
     48 
     49   NinjaHelper helper_;
     50 
     51   DISALLOW_COPY_AND_ASSIGN(NinjaBuildWriter);
     52 };
     53 
     54 #endif  // TOOLS_GN_NINJA_BUILD_GENERATOR_H_
     55 
     56