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 | |
29 | typedef uint64_t EncodedMatchResult; |
30 | |
31 | struct 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 | |