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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_PREPARSE_DATA_FORMAT_H_ | 5 #ifndef V8_PREPARSE_DATA_FORMAT_H_ |
6 #define V8_PREPARSE_DATA_FORMAT_H_ | 6 #define V8_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 = 9; | 17 static const unsigned kCurrentVersion = 10; |
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 kHasErrorOffset = 2; |
22 static const int kFunctionsSizeOffset = 3; | 22 static const int kFunctionsSizeOffset = 3; |
23 static const int kSizeOffset = 4; | 23 static const int kSizeOffset = 4; |
24 static const int kHeaderSize = 5; | 24 static const int kHeaderSize = 5; |
25 | 25 |
26 // If encoding a message, the following positions are fixed. | 26 // If encoding a message, the following positions are fixed. |
27 static const int kMessageStartPos = 0; | 27 static const int kMessageStartPos = 0; |
28 static const int kMessageEndPos = 1; | 28 static const int kMessageEndPos = 1; |
29 static const int kMessageArgCountPos = 2; | 29 static const int kMessageArgCountPos = 2; |
30 static const int kIsReferenceErrorPos = 3; | 30 static const int kIsReferenceErrorPos = 3; |
31 static const int kMessageTextPos = 4; | 31 static const int kMessageTextPos = 4; |
32 | 32 |
33 static const unsigned char kNumberTerminator = 0x80u; | 33 static const unsigned char kNumberTerminator = 0x80u; |
34 }; | 34 }; |
35 | 35 |
36 | 36 |
37 } } // namespace v8::internal. | 37 } } // namespace v8::internal. |
38 | 38 |
39 #endif // V8_PREPARSE_DATA_FORMAT_H_ | 39 #endif // V8_PREPARSE_DATA_FORMAT_H_ |
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