char-predicates.h revision a7e24c173cf37484693b9abb38e494fa7bd7baeb
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 31namespace v8 { 32namespace internal { 33 34// Unicode character predicates as defined by ECMA-262, 3rd, 35// used for lexical analysis. 36 37inline bool IsCarriageReturn(uc32 c); 38inline bool IsLineFeed(uc32 c); 39inline bool IsDecimalDigit(uc32 c); 40inline bool IsHexDigit(uc32 c); 41inline bool IsRegExpWord(uc32 c); 42inline bool IsRegExpNewline(uc32 c); 43 44struct 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 54struct 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