// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef TOOLS_GN_CONFIG_H_
#define TOOLS_GN_CONFIG_H_

#include "base/compiler_specific.h"
#include "tools/gn/config_values.h"
#include "tools/gn/item.h"

class Err;
class ItemTree;
class LocationRange;
class Settings;

// Represents a named config in the dependency graph.
class Config : public Item {
 public:
  Config(const Label& label);
  virtual ~Config();

  virtual Config* AsConfig() OVERRIDE;
  virtual const Config* AsConfig() const OVERRIDE;

  ConfigValues& config_values() { return config_values_; }
  const ConfigValues& config_values() const { return config_values_; }

  // Gets or creates a config.
  //
  // This is like the TargetManager is for Targets, but Configs are so much
  // simpler that this one function is all we need.
  static Config* GetConfig(const Settings* settings,
                           const LocationRange& specified_from_here,
                           const Label& label,
                           Item* dep_from,
                           Err* err);

 private:
  ConfigValues config_values_;

  DISALLOW_COPY_AND_ASSIGN(Config);
};

#endif  // TOOLS_GN_CONFIG_H_