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

trunk/src/tools/gn/token.h

-// 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_TOKEN_H_
-#define TOOLS_GN_TOKEN_H_
-
-#include "base/strings/string_piece.h"
-#include "tools/gn/location.h"
-
-class Token {
- public:
-  enum Type {
-    INVALID,
-    INTEGER,    // 123
-    STRING,     // "blah"
-    OPERATOR,   // =, +=, -=, +, -, ==, !=, <=, >=, <, >
-    IDENTIFIER, // foo
-    SCOPER,     // (, ), [, ], {, }
-    SEPARATOR,  // ,
-    COMMENT     // #...\n
-  };
-
-  Token();
-  Token(const Location& location, Type t, const base::StringPiece& v);
-
-  Type type() const { return type_; }
-  const base::StringPiece& value() const { return value_; }
-  const Location& location() const { return location_; }
-  LocationRange range() const {
-    return LocationRange(location_,
-                         Location(location_.file(), location_.line_number(),
-                                  location_.char_offset() + value_.size()));
-  }
-
-  // Helper functions for comparing this token to something.
-  bool IsIdentifierEqualTo(const char* v) const;
-  bool IsOperatorEqualTo(const char* v) const;
-  bool IsScoperEqualTo(const char* v) const;
-  bool IsStringEqualTo(const char* v) const;
-
-  // For STRING tokens, returns the string value (no quotes at end, does
-  // unescaping).
-  std::string StringValue() const;
-
- private:
-  Type type_;
-  base::StringPiece value_;
-  Location location_;
-};
-
-#endif  // TOOLS_GN_TOKEN_H_