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f9bf01c6 1/*
6fe7ccc8 2 * Copyright (C) 2012 Apple Inc. All rights reserved.
f9bf01c6
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3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
6fe7ccc8 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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24 */
25
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26#ifndef MatchResult_h
27#define MatchResult_h
f9bf01c6 28
6fe7ccc8 29typedef uint64_t EncodedMatchResult;
f9bf01c6 30
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31struct MatchResult {
32 ALWAYS_INLINE MatchResult(size_t start, size_t end)
33 : start(start)
34 , end(end)
35 {
36 }
f9bf01c6 37
6fe7ccc8 38 explicit ALWAYS_INLINE MatchResult(EncodedMatchResult encoded)
f9bf01c6 39 {
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40 union u {
41 uint64_t encoded;
42 struct s {
43 size_t start;
44 size_t end;
45 } split;
46 } value;
47 value.encoded = encoded;
48 start = value.split.start;
49 end = value.split.end;
f9bf01c6 50 }
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51
52 ALWAYS_INLINE static MatchResult failed()
f9bf01c6 53 {
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54 return MatchResult(WTF::notFound, 0);
55 }
56
57 ALWAYS_INLINE operator bool()
58 {
59 return start != WTF::notFound;
f9bf01c6 60 }
f9bf01c6 61
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62 ALWAYS_INLINE bool empty()
63 {
64 return start == end;
65 }
f9bf01c6 66
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67 size_t start;
68 size_t end;
69};
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70
71#endif