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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/path_output.h"
     12 
     13 class BuildSettings;
     14 class Settings;
     15 class Target;
     16 class Toolchain;
     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 Toolchain* default_toolchain,
     27       const std::vector<const Target*>& default_toolchain_targets);
     28 
     29  private:
     30   NinjaBuildWriter(const BuildSettings* settings,
     31                    const std::vector<const Settings*>& all_settings,
     32                    const Toolchain* default_toolchain,
     33                    const std::vector<const Target*>& default_toolchain_targets,
     34                    std::ostream& out,
     35                    std::ostream& dep_out);
     36   ~NinjaBuildWriter();
     37 
     38   void Run();
     39 
     40   void WriteNinjaRules();
     41   void WriteLinkPool();
     42   void WriteSubninjas();
     43   void WritePhonyAndAllRules();
     44 
     45   void WritePhonyRule(const Target* target, const OutputFile& target_file,
     46                       const std::string& phony_name);
     47 
     48   const BuildSettings* build_settings_;
     49   std::vector<const Settings*> all_settings_;
     50   const Toolchain* default_toolchain_;
     51   std::vector<const Target*> default_toolchain_targets_;
     52   std::ostream& out_;
     53   std::ostream& dep_out_;
     54   PathOutput path_output_;
     55 
     56   DISALLOW_COPY_AND_ASSIGN(NinjaBuildWriter);
     57 };
     58 
     59 #endif  // TOOLS_GN_NINJA_BUILD_GENERATOR_H_
     60 
     61