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_TARGET_WRITER_H_ 6 #define TOOLS_GN_NINJA_TARGET_WRITER_H_ 7 8 #include <iosfwd> 9 10 #include "base/basictypes.h" 11 #include "tools/gn/ninja_helper.h" 12 #include "tools/gn/path_output.h" 13 14 class FileTemplate; 15 class Settings; 16 class Target; 17 18 // Generates one target's ".ninja" file. The toplevel "build.ninja" file is 19 // generated by the NinjaBuildWriter. 20 class NinjaTargetWriter { 21 public: 22 NinjaTargetWriter(const Target* target, 23 const Toolchain* toolchain, 24 std::ostream& out); 25 virtual ~NinjaTargetWriter(); 26 27 static void RunAndWriteFile(const Target* target, const Toolchain* toolchain); 28 29 virtual void Run() = 0; 30 31 protected: 32 // Returns the string to be appended to source rules that encodes the 33 // order-only dependencies for the current target. This will include the 34 // "|" character so can just be appended to the source rules. If there are no 35 // implicit dependencies, returns the empty string. 36 std::string GetSourcesImplicitDeps() const; 37 38 // Returns the FileTemplate constructed from the outputs variable. This is 39 // like FileTemplate::GetForTargetOutputs except this additionally trims the 40 // build directory from the front so we can just write the names without 41 // further processing. 42 FileTemplate GetOutputTemplate() const; 43 44 const Settings* settings_; // Non-owning. 45 const Target* target_; // Non-owning. 46 const Toolchain* toolchain_; // Non-owning. 47 std::ostream& out_; 48 PathOutput path_output_; 49 50 NinjaHelper helper_; 51 52 private: 53 void WriteCopyRules(); 54 55 DISALLOW_COPY_AND_ASSIGN(NinjaTargetWriter); 56 }; 57 58 #endif // TOOLS_GN_NINJA_TARGET_WRITER_H_ 59
