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_CHAR_PREDICATES_H_ 29 #define V8_CHAR_PREDICATES_H_ 30 31 #include "unicode.h" 32 33 namespace v8 { 34 namespace internal { 35 36 // Unicode character predicates as defined by ECMA-262, 3rd, 37 // used for lexical analysis. 38 39 inline bool IsCarriageReturn(uc32 c); 40 inline bool IsLineFeed(uc32 c); 41 inline bool IsDecimalDigit(uc32 c); 42 inline bool IsHexDigit(uc32 c); 43 inline bool IsOctalDigit(uc32 c); 44 inline bool IsBinaryDigit(uc32 c); 45 inline bool IsRegExpWord(uc32 c); 46 inline bool IsRegExpNewline(uc32 c); 47 48 struct IdentifierStart { 49 static inline bool Is(uc32 c) { 50 switch (c) { 51 case '$': case '_': case '\\': return true; 52 default: return unibrow::Letter::Is(c); 53 } 54 } 55 }; 56 57 58 struct IdentifierPart { 59 static inline bool Is(uc32 c) { 60 return IdentifierStart::Is(c) 61 || unibrow::Number::Is(c) 62 || c == 0x200C // U+200C is Zero-Width Non-Joiner. 63 || c == 0x200D // U+200D is Zero-Width Joiner. 64 || unibrow::CombiningMark::Is(c) 65 || unibrow::ConnectorPunctuation::Is(c); 66 } 67 }; 68 69 } } // namespace v8::internal 70 71 #endif // V8_CHAR_PREDICATES_H_ 72
