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 4 // met: 5 // 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 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 #ifndef V8_PREPARSE_DATA_FORMAT_H_ 29 #define V8_PREPARSE_DATA_FORMAT_H_ 30 31 namespace v8 { 32 namespace internal { 33 34 // Generic and general data used by preparse data recorders and readers. 35 36 struct PreparseDataConstants { 37 public: 38 // Layout and constants of the preparse data exchange format. 39 static const unsigned kMagicNumber = 0xBadDead; 40 static const unsigned kCurrentVersion = 7; 41 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; 49 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; 55 56 static const unsigned char kNumberTerminator = 0x80u; 57 }; 58 59 60 } } // namespace v8::internal. 61 62 #endif // V8_PREPARSE_DATA_FORMAT_H_ 63
