1/*
2 * Copyright (C) 2012 Apple 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
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
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef MatchResult_h
27#define MatchResult_h
28
29typedef uint64_t EncodedMatchResult;
30
31struct MatchResult {
32 ALWAYS_INLINE MatchResult(size_t start, size_t end)
33 : start(start)
34 , end(end)
35 {
36 }
37
38#if !CPU(X86_64) && !CPU(ARM64)
39 explicit ALWAYS_INLINE MatchResult(EncodedMatchResult encoded)
40 {
41 union u {
42 uint64_t encoded;
43 struct s {
44 size_t start;
45 size_t end;
46 } split;
47 } value;
48 value.encoded = encoded;
49 start = value.split.start;
50 end = value.split.end;
51 }
52#endif
53
54 ALWAYS_INLINE static MatchResult failed()
55 {
56 return MatchResult(WTF::notFound, 0);
57 }
58
59 ALWAYS_INLINE operator bool()
60 {
61 return start != WTF::notFound;
62 }
63
64 ALWAYS_INLINE bool empty()
65 {
66 return start == end;
67 }
68
69 size_t start;
70 size_t end;
71};
72
73#endif
74

source code of qtdeclarative/src/3rdparty/masm/runtime/MatchResult.h