preparse-data-format.h

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// Copyright 2011 the V8 project 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 V8_PREPARSE_DATA_FORMAT_H_
#define V8_PREPARSE_DATA_FORMAT_H_
 
namespace v8 {
namespace internal {
 
// Generic and general data used by preparse data recorders and readers.
 
struct PreparseDataConstants {
 public:
  // Layout and constants of the preparse data exchange format.
  static const unsigned kMagicNumber = 0xBadDead;
  static const unsigned kCurrentVersion = 9;
 
  static const int kMagicOffset = 0;
  static const int kVersionOffset = 1;
  static const int kHasErrorOffset = 2;
  static const int kFunctionsSizeOffset = 3;
  static const int kSizeOffset = 4;
  static const int kHeaderSize = 5;
 
  // If encoding a message, the following positions are fixed.
  static const int kMessageStartPos = 0;
  static const int kMessageEndPos = 1;
  static const int kMessageArgCountPos = 2;
  static const int kIsReferenceErrorPos = 3;
  static const int kMessageTextPos = 4;
 
  static const unsigned char kNumberTerminator = 0x80u;
};
 
 
} }  // namespace v8::internal.
 
#endif  // V8_PREPARSE_DATA_FORMAT_H_