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

trunk/src/tools/gn/err.h

Index: trunk/src/tools/gn/err.h
===================================================================
--- trunk/src/tools/gn/err.h	(revision 214322)
+++ trunk/src/tools/gn/err.h	(working copy)
@@ -1,85 +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_ERR_H_
-#define TOOLS_GN_ERR_H_
-
-#include <string>
-#include <vector>
-
-#include "tools/gn/location.h"
-#include "tools/gn/token.h"
-
-class ParseNode;
-class Value;
-
-// Result of doing some operation. Check has_error() to see if an error
-// occurred.
-//
-// An error has a location and a message. Below that, is some optional help
-// text to go with the annotation of the location.
-//
-// An error can also have sub-errors which are additionally printed out
-// below. They can provide additional context.
-class Err {
- public:
-  typedef std::vector<LocationRange> RangeList;
-
-  // Indicates no error.
-  Err();
-
-  // Error at a single point.
-  Err(const Location& location,
-      const std::string& msg,
-      const std::string& help = std::string());
-
-  // Error at a given range.
-  Err(const LocationRange& range,
-      const std::string& msg,
-      const std::string& help = std::string());
-
-  // Error at a given token.
-  Err(const Token& token,
-      const std::string& msg,
-      const std::string& help_text = std::string());
-
-  // Error at a given node.
-  Err(const ParseNode* node,
-      const std::string& msg,
-      const std::string& help_text = std::string());
-
-  // Error at a given value.
-  Err(const Value& value,
-      const std::string msg,
-      const std::string& help_text = std::string());
-
-  ~Err();
-
-  bool has_error() const { return has_error_; }
-  const Location& location() const { return location_; }
-  const std::string& message() const { return message_; }
-  const std::string& help_text() const { return help_text_; }
-
-  void AppendRange(const LocationRange& range) { ranges_.push_back(range); }
-  const RangeList& ranges() const { return ranges_; }
-
-  void AppendSubErr(const Err& err);
-
-  void PrintToStdout() const;
-
- private:
-  void InternalPrintToStdout(bool is_sub_err) const;
-
-  bool has_error_;
-  Location location_;
-
-  std::vector<LocationRange> ranges_;
-
-  std::string message_;
-  std::string help_text_;
-
-  std::vector<Err> sub_errs_;
-};
-
-#endif  // TOOLS_GN_ERR_H_