tools/gn/ninja_build_writer.h

   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 <set>
  10 #include <vector>
  11
  12 #include "tools/gn/path_output.h"
  13
  14 class BuildSettings;
  15 class Err;
  16 class Settings;
  17 class Target;
  18 class Toolchain;
  19
  20 // Generates the toplevel "build.ninja" file. This references the individual
  21 // toolchain files and lists all input .gn files as dependencies of the
  22 // build itself.
  23 class NinjaBuildWriter {
  24  public:
  25   static bool RunAndWriteFile(
  26       const BuildSettings* settings,
  27       const std::vector<const Settings*>& all_settings,
  28       const Toolchain* default_toolchain,
  29       const std::vector<const Target*>& default_toolchain_targets,
  30       Err* err);
  31
  32  private:
  33   NinjaBuildWriter(const BuildSettings* settings,
  34                    const std::vector<const Settings*>& all_settings,
  35                    const Toolchain* default_toolchain,
  36                    const std::vector<const Target*>& default_toolchain_targets,
  37                    std::ostream& out,
  38                    std::ostream& dep_out);
  39   ~NinjaBuildWriter();
  40
  41   bool Run(Err* err);
  42
  43   void WriteNinjaRules();
  44   void WriteLinkPool();
  45   void WriteSubninjas();
  46   bool WritePhonyAndAllRules(Err* err);
  47
  48   // Writes a phony rule for the given target with the given name. Adds the new
  49   // name to the given set. If the name is already in the set, does nothing.
  50   void WritePhonyRule(const Target* target,
  51                       const OutputFile& target_file,
  52                       const std::string& phony_name,
  53                       std::set<std::string>* written_rules);
  54
  55   const BuildSettings* build_settings_;
  56   std::vector<const Settings*> all_settings_;
  57   const Toolchain* default_toolchain_;
  58   std::vector<const Target*> default_toolchain_targets_;
  59   std::ostream& out_;
  60   std::ostream& dep_out_;
  61   PathOutput path_output_;
  62
  63   DISALLOW_COPY_AND_ASSIGN(NinjaBuildWriter);
  64 };
  65
  66 #endif  // TOOLS_GN_NINJA_BUILD_WRITER_H_
  67