1 /* 2 * Copyright (C) 2013 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef ParsingUtilities_h 32 #define ParsingUtilities_h 33 34 template<typename CharType> 35 bool skipExactly(const CharType*& position, const CharType* end, CharType delimiter) 36 { 37 if (position < end && *position == delimiter) { 38 ++position; 39 return true; 40 } 41 return false; 42 } 43 44 template<typename CharType, bool characterPredicate(CharType)> 45 bool skipExactly(const CharType*& position, const CharType* end) 46 { 47 if (position < end && characterPredicate(*position)) { 48 ++position; 49 return true; 50 } 51 return false; 52 } 53 54 template<typename CharType> 55 void skipUntil(const CharType*& position, const CharType* end, CharType delimiter) 56 { 57 while (position < end && *position != delimiter) 58 ++position; 59 } 60 61 template<typename CharType, bool characterPredicate(CharType)> 62 void skipUntil(const CharType*& position, const CharType* end) 63 { 64 while (position < end && !characterPredicate(*position)) 65 ++position; 66 } 67 68 template<typename CharType, bool characterPredicate(CharType)> 69 void skipWhile(const CharType*& position, const CharType* end) 70 { 71 while (position < end && characterPredicate(*position)) 72 ++position; 73 } 74 75 template<typename CharType, bool characterPredicate(CharType)> 76 void reverseSkipWhile(const CharType*& position, const CharType* start) 77 { 78 while (position >= start && characterPredicate(*position)) 79 --position; 80 } 81 82 #endif 83 84
