tools/gn/input_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_INPUT_FILE_H_
   6 #define TOOLS_GN_INPUT_FILE_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/files/file_path.h"
  12 #include "base/logging.h"
  13 #include "tools/gn/source_dir.h"
  14 #include "tools/gn/source_file.h"
  15
  16 class InputFile {
  17  public:
  18   InputFile(const SourceFile& name);
  19
  20   ~InputFile();
  21
  22   // The virtual name passed into the constructor. This does not take into
  23   // account whether the file was loaded from the secondary source tree (see
  24   // BuildSettings secondary_source_path).
  25   const SourceFile& name() const { return name_; }
  26
  27   // The directory is just a cached version of name()->GetDir() but we get this
  28   // a lot so computing it once up front saves a bunch of work.
  29   const SourceDir& dir() const { return dir_; }
  30
  31   // The physical name tells the actual name on disk, if there is one.
  32   const base::FilePath& physical_name() const { return physical_name_; }
  33
  34   // The friendly name can be set to override the name() in cases where there
  35   // is no name (like SetContents is used instead) or if the name doesn't
  36   // make sense. This will be displayed in error messages.
  37   const std::string& friendly_name() const { return friendly_name_; }
  38   void set_friendly_name(const std::string& f) { friendly_name_ = f; }
  39
  40   const std::string& contents() const {
  41     DCHECK(contents_loaded_);
  42     return contents_;
  43   }
  44
  45   // For testing and in cases where this input doesn't actually refer to
  46   // "a file".
  47   void SetContents(const std::string& c);
  48
  49   // Loads the given file synchronously, returning true on success. This
  50   bool Load(const base::FilePath& system_path);
  51
  52  private:
  53   SourceFile name_;
  54   SourceDir dir_;
  55
  56   base::FilePath physical_name_;
  57   std::string friendly_name_;
  58
  59   bool contents_loaded_;
  60   std::string contents_;
  61
  62   DISALLOW_COPY_AND_ASSIGN(InputFile);
  63 };
  64
  65 #endif  // TOOLS_GN_INPUT_FILE_H_