js/src/yarr/MatchResult.h@6474c204b198 (annotated)
js/src/yarr/MatchResult.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- |
| michael@0 | 2 | * vim: set ts=8 sts=4 et sw=4 tw=99: |
| michael@0 | 3 | * |
| michael@0 | 4 | * Copyright (C) 2012 Apple Inc. All rights reserved. |
| michael@0 | 5 | * |
| michael@0 | 6 | * Redistribution and use in source and binary forms, with or without |
| michael@0 | 7 | * modification, are permitted provided that the following conditions |
| michael@0 | 8 | * are met: |
| michael@0 | 9 | * 1. Redistributions of source code must retain the above copyright |
| michael@0 | 10 | * notice, this list of conditions and the following disclaimer. |
| michael@0 | 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| michael@0 | 12 | * notice, this list of conditions and the following disclaimer in the |
| michael@0 | 13 | * documentation and/or other materials provided with the distribution. |
| michael@0 | 14 | * |
| michael@0 | 15 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| michael@0 | 16 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| michael@0 | 17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| michael@0 | 18 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| michael@0 | 19 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| michael@0 | 20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| michael@0 | 21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| michael@0 | 22 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| michael@0 | 23 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| michael@0 | 24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| michael@0 | 25 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| michael@0 | 26 | */ |
| michael@0 | 27 | |
| michael@0 | 28 | #ifndef yarr_MatchResult_h |
| michael@0 | 29 | #define yarr_MatchResult_h |
| michael@0 | 30 | |
| michael@0 | 31 | #include "yarr/wtfbridge.h" |
| michael@0 | 32 | |
| michael@0 | 33 | typedef uint64_t EncodedMatchResult; |
| michael@0 | 34 | |
| michael@0 | 35 | struct MatchResult { |
| michael@0 | 36 | MatchResult(int start, int end) |
| michael@0 | 37 | : start(start) |
| michael@0 | 38 | , end(end) |
| michael@0 | 39 | { |
| michael@0 | 40 | } |
| michael@0 | 41 | |
| michael@0 | 42 | #if !WTF_CPU_X86_64 || WTF_PLATFORM_WIN |
| michael@0 | 43 | explicit MatchResult(EncodedMatchResult encoded) |
| michael@0 | 44 | { |
| michael@0 | 45 | union u { |
| michael@0 | 46 | uint64_t encoded; |
| michael@0 | 47 | struct s { |
| michael@0 | 48 | int start; |
| michael@0 | 49 | int end; |
| michael@0 | 50 | } split; |
| michael@0 | 51 | } value; |
| michael@0 | 52 | value.encoded = encoded; |
| michael@0 | 53 | start = value.split.start; |
| michael@0 | 54 | end = value.split.end; |
| michael@0 | 55 | } |
| michael@0 | 56 | #endif |
| michael@0 | 57 | |
| michael@0 | 58 | static MatchResult failed() |
| michael@0 | 59 | { |
| michael@0 | 60 | return MatchResult(int(WTF::notFound), 0); |
| michael@0 | 61 | } |
| michael@0 | 62 | |
| michael@0 | 63 | operator bool() |
| michael@0 | 64 | { |
| michael@0 | 65 | return start != int(WTF::notFound); |
| michael@0 | 66 | } |
| michael@0 | 67 | |
| michael@0 | 68 | bool empty() |
| michael@0 | 69 | { |
| michael@0 | 70 | return start == end; |
| michael@0 | 71 | } |
| michael@0 | 72 | |
| michael@0 | 73 | // strings are limited to a length of 2^28. So this is safe |
| michael@0 | 74 | int start; |
| michael@0 | 75 | int end; |
| michael@0 | 76 | }; |
| michael@0 | 77 | |
| michael@0 | 78 | #endif /* yarr_MatchResult_h */ |
