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>
skipExactly(const CharType * & position,const CharType * end,CharType delimiter)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)>
skipExactly(const CharType * & position,const CharType * end)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>
skipUntil(const CharType * & position,const CharType * end,CharType delimiter)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)>
skipUntil(const CharType * & position,const CharType * end)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)>
skipWhile(const CharType * & position,const CharType * end)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)>
reverseSkipWhile(const CharType * & position,const CharType * start)76 void reverseSkipWhile(const CharType*& position, const CharType* start)
77 {
78 while (position >= start && characterPredicate(*position))
79 --position;
80 }
81
82 #endif
83
84