Revert 214254 "Add initial prototype for the GN meta-buildsystem."

trunk/src/tools/gn/toolchain.h

Index: trunk/src/tools/gn/toolchain.h
===================================================================
--- trunk/src/tools/gn/toolchain.h	(revision 214322)
+++ trunk/src/tools/gn/toolchain.h	(working copy)
@@ -1,94 +0,0 @@
-// 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_TOOLCHAIN_H_
-#define TOOLS_GN_TOOLCHAIN_H_
-
-#include "base/compiler_specific.h"
-#include "base/strings/string_piece.h"
-#include "tools/gn/item.h"
-
-// Holds information on a specific toolchain. This data is filled in when we
-// encounter a toolchain definition.
-//
-// This class is an Item so it can participate in dependency management. In
-// particular, when a target uses a toolchain, it should have a dependency on
-// that toolchain's object so that we can be sure we loaded the toolchain
-// before generating the build for that target.
-//
-// Note on threadsafety: The label of the toolchain never changes so can
-// safetly be accessed from any thread at any time (we do this when asking for
-// the toolchain name). But the values in the toolchain do, so these can't
-// be accessed until this Item is resolved.
-class Toolchain : public Item {
- public:
-  enum ToolType {
-    TYPE_NONE = 0,
-    TYPE_CC,
-    TYPE_CXX,
-    TYPE_ASM,
-    TYPE_ALINK,
-    TYPE_SOLINK,
-    TYPE_SOLINK_MODULE,
-    TYPE_LINK,
-    TYPE_STAMP,
-    TYPE_COPY,
-
-    TYPE_NUMTYPES  // Must be last.
-  };
-
-  static const char* kToolCc;
-  static const char* kToolCxx;
-  static const char* kToolAsm;
-  static const char* kToolAlink;
-  static const char* kToolSolink;
-  static const char* kToolSolinkModule;
-  static const char* kToolLink;
-  static const char* kToolStamp;
-  static const char* kToolCopy;
-
-  struct Tool {
-    Tool();
-    ~Tool();
-
-    bool empty() const {
-      return command.empty() && depfile.empty() && deps.empty() &&
-             description.empty() && pool.empty() && restat.empty() &&
-             rspfile.empty() && rspfile_content.empty();
-    }
-
-    std::string command;
-    std::string depfile;
-    std::string deps;
-    std::string description;
-    std::string pool;
-    std::string restat;
-    std::string rspfile;
-    std::string rspfile_content;
-  };
-
-  Toolchain(const Label& label);
-  virtual ~Toolchain();
-
-  // Item overrides.
-  virtual Toolchain* AsToolchain() OVERRIDE;
-  virtual const Toolchain* AsToolchain() const OVERRIDE;
-
-  // Returns TYPE_NONE on failure.
-  static ToolType ToolNameToType(const base::StringPiece& str);
-  static std::string ToolTypeToName(ToolType type);
-
-  const Tool& GetTool(ToolType type) const;
-  void SetTool(ToolType type, const Tool& t);
-
-  const std::string& environment() const { return environment_; }
-  void set_environment(const std::string& env) { environment_ = env; }
-
- private:
-  Tool tools_[TYPE_NUMTYPES];
-
-  std::string environment_;
-};
-
-#endif  // TOOLS_GN_TOOLCHAIN_H_