tools/gn/output_file.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_OUTPUT_FILE_H_
   6 #define TOOLS_GN_OUTPUT_FILE_H_
   7
   8 #include <string>
   9
  10 #include "base/containers/hash_tables.h"
  11 #include "tools/gn/build_settings.h"
  12
  13 class SourceFile;
  14
  15 // A simple wrapper around a string that indicates the string is a path
  16 // relative to the output directory.
  17 class OutputFile {
  18  public:
  19   OutputFile();
  20   explicit OutputFile(std::string&& v);
  21   explicit OutputFile(const std::string& v);
  22   OutputFile(const BuildSettings* build_settings,
  23              const SourceFile& source_file);
  24   ~OutputFile();
  25
  26   std::string& value() { return value_; }
  27   const std::string& value() const { return value_; }
  28
  29   // Converts to a SourceFile by prepending the build directory to the file.
  30   // The *Dir version requires that the current OutputFile ends in a slash, and
  31   // the *File version is the opposite.
  32   SourceFile AsSourceFile(const BuildSettings* build_settings) const;
  33   SourceDir AsSourceDir(const BuildSettings* build_settings) const;
  34
  35   bool operator==(const OutputFile& other) const {
  36     return value_ == other.value_;
  37   }
  38   bool operator!=(const OutputFile& other) const {
  39     return value_ != other.value_;
  40   }
  41   bool operator<(const OutputFile& other) const {
  42     return value_ < other.value_;
  43   }
  44
  45  private:
  46   std::string value_;
  47 };
  48
  49 namespace BASE_HASH_NAMESPACE {
  50
  51 template<> struct hash<OutputFile> {
  52   std::size_t operator()(const OutputFile& v) const {
  53     hash<std::string> h;
  54     return h(v.value());
  55   }
  56 };
  57
  58 }  // namespace BASE_HASH_NAMESPACE
  59
  60 inline void swap(OutputFile& lhs, OutputFile& rhs) {
  61   lhs.value().swap(rhs.value());
  62 }
  63
  64 #endif  // TOOLS_GN_OUTPUT_FILE_H_