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
34template<typename CharType>
35bool 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
44template<typename CharType, bool characterPredicate(CharType)>
45bool 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
54template<typename CharType>
55void skipUntil(const CharType*& position, const CharType* end, CharType delimiter)
56{
57    while (position < end && *position != delimiter)
58        ++position;
59}
60
61template<typename CharType, bool characterPredicate(CharType)>
62void skipUntil(const CharType*& position, const CharType* end)
63{
64    while (position < end && !characterPredicate(*position))
65        ++position;
66}
67
68template<typename CharType, bool characterPredicate(CharType)>
69void skipWhile(const CharType*& position, const CharType* end)
70{
71    while (position < end && characterPredicate(*position))
72        ++position;
73}
74
75template<typename CharType, bool characterPredicate(CharType)>
76void reverseSkipWhile(const CharType*& position, const CharType* start)
77{
78    while (position >= start && characterPredicate(*position))
79        --position;
80}
81
82#endif
83
84