1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
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28 #ifndef V8_PREPARSE_DATA_FORMAT_H_
29 #define V8_PREPARSE_DATA_FORMAT_H_
34 // Generic and general data used by preparse data recorders and readers.
36 struct PreparseDataConstants {
38 // Layout and constants of the preparse data exchange format.
39 static const unsigned kMagicNumber = 0xBadDead;
40 static const unsigned kCurrentVersion = 8;
42 static const int kMagicOffset = 0;
43 static const int kVersionOffset = 1;
44 static const int kHasErrorOffset = 2;
45 static const int kFunctionsSizeOffset = 3;
46 static const int kSymbolCountOffset = 4;
47 static const int kSizeOffset = 5;
48 static const int kHeaderSize = 6;
50 // If encoding a message, the following positions are fixed.
51 static const int kMessageStartPos = 0;
52 static const int kMessageEndPos = 1;
53 static const int kMessageArgCountPos = 2;
54 static const int kMessageTextPos = 3;
56 static const unsigned char kNumberTerminator = 0x80u;
60 } } // namespace v8::internal.
62 #endif // V8_PREPARSE_DATA_FORMAT_H_