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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_PARSING_PREPARSE_DATA_FORMAT_H_ | 5 #ifndef V8_PARSING_PREPARSE_DATA_FORMAT_H_ |
6 #define V8_PARSING_PREPARSE_DATA_FORMAT_H_ | 6 #define V8_PARSING_PREPARSE_DATA_FORMAT_H_ |
7 | 7 |
8 namespace v8 { | 8 namespace v8 { |
9 namespace internal { | 9 namespace internal { |
10 | 10 |
11 // Generic and general data used by preparse data recorders and readers. | 11 // Generic and general data used by preparse data recorders and readers. |
12 | 12 |
13 struct PreparseDataConstants { | 13 struct PreparseDataConstants { |
14 public: | 14 public: |
15 // Layout and constants of the preparse data exchange format. | 15 // Layout and constants of the preparse data exchange format. |
16 static const unsigned kMagicNumber = 0xBadDead; | 16 static const unsigned kMagicNumber = 0xBadDead; |
17 static const unsigned kCurrentVersion = 12; | 17 static const unsigned kCurrentVersion = 13; |
18 | 18 |
19 static const int kMagicOffset = 0; | 19 static const int kMagicOffset = 0; |
20 static const int kVersionOffset = 1; | 20 static const int kVersionOffset = 1; |
21 static const int kHasErrorOffset = 2; | 21 static const int kFunctionsSizeOffset = 2; |
22 static const int kFunctionsSizeOffset = 3; | 22 static const int kSizeOffset = 3; |
23 static const int kSizeOffset = 4; | 23 static const int kHeaderSize = 4; |
24 static const int kHeaderSize = 5; | |
25 | |
26 // If encoding a message, the following positions are fixed. | |
27 static const int kMessageStartPos = 0; | |
28 static const int kMessageEndPos = 1; | |
29 static const int kMessageArgCountPos = 2; | |
30 static const int kParseErrorTypePos = 3; | |
31 static const int kMessageTemplatePos = 4; | |
32 static const int kMessageArgPos = 5; | |
33 | 24 |
34 static const unsigned char kNumberTerminator = 0x80u; | 25 static const unsigned char kNumberTerminator = 0x80u; |
35 }; | 26 }; |
36 | 27 |
37 | 28 |
38 } // namespace internal | 29 } // namespace internal |
39 } // namespace v8. | 30 } // namespace v8. |
40 | 31 |
41 #endif // V8_PARSING_PREPARSE_DATA_FORMAT_H_ | 32 #endif // V8_PARSING_PREPARSE_DATA_FORMAT_H_ |
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