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(const base::StringPiece& str);
  21   OutputFile(const BuildSettings* build_settings,
  22              const SourceFile& source_file);
  23   ~OutputFile();
  24
  25   std::string& value() { return value_; }
  26   const std::string& value() const { return value_; }
  27
  28   // Converts to a SourceFile by prepending the build directory to the file.
  29   // The *Dir version requires that the current OutputFile ends in a slash, and
  30   // the *File version is the opposite.
  31   SourceFile AsSourceFile(const BuildSettings* build_settings) const;
  32   SourceDir AsSourceDir(const BuildSettings* build_settings) const;
  33
  34   bool operator==(const OutputFile& other) const {
  35     return value_ == other.value_;
  36   }
  37   bool operator!=(const OutputFile& other) const {
  38     return value_ != other.value_;
  39   }
  40   bool operator<(const OutputFile& other) const {
  41     return value_ < other.value_;
  42   }
  43
  44  private:
  45   std::string value_;
  46 };
  47
  48 namespace BASE_HASH_NAMESPACE {
  49
  50 template<> struct hash<OutputFile> {
  51   std::size_t operator()(const OutputFile& v) const {
  52     hash<std::string> h;
  53     return h(v.value());
  54   }
  55 };
  56
  57 }  // namespace BASE_HASH_NAMESPACE
  58
  59 inline void swap(OutputFile& lhs, OutputFile& rhs) {
  60   lhs.value().swap(rhs.value());
  61 }
  62
  63 #endif  // TOOLS_GN_OUTPUT_FILE_H_