1 // Copyright 2006-2008 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_CHAR_PREDICATES_H_ 29 #define V8_CHAR_PREDICATES_H_ 30 31 namespace v8 { 32 namespace internal { 33 34 // Unicode character predicates as defined by ECMA-262, 3rd, 35 // used for lexical analysis. 36 37 inline bool IsCarriageReturn(uc32 c); 38 inline bool IsLineFeed(uc32 c); 39 inline bool IsDecimalDigit(uc32 c); 40 inline bool IsHexDigit(uc32 c); 41 inline bool IsRegExpWord(uc32 c); 42 inline bool IsRegExpNewline(uc32 c); 43 44 struct IdentifierStart { 45 static inline bool Is(uc32 c) { 46 switch (c) { 47 case '$': case '_': case '\\': return true; 48 default: return unibrow::Letter::Is(c); 49 } 50 } 51 }; 52 53 54 struct IdentifierPart { 55 static inline bool Is(uc32 c) { 56 return IdentifierStart::Is(c) 57 || unibrow::Number::Is(c) 58 || unibrow::CombiningMark::Is(c) 59 || unibrow::ConnectorPunctuation::Is(c); 60 } 61 }; 62 63 } } // namespace v8::internal 64 65 #endif // V8_CHAR_PREDICATES_H_ 66
