1 | /* |
2 | * Copyright (C) 2009 Apple Inc. All rights reserved. |
3 | * Copyright (C) 2010 Peter Varga (pvarga@inf.u-szeged.hu), University of Szeged |
4 | * All rights reserved. |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions |
8 | * are met: |
9 | * 1. Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * 2. Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
14 | * |
15 | * THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY |
16 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
18 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL UNIVERSITY OF SZEGED OR |
19 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
22 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
23 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
25 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | */ |
27 | |
28 | #pragma once |
29 | |
30 | #include <limits.h> |
31 | #include <limits> |
32 | #include "YarrErrorCode.h" |
33 | |
34 | namespace JSC { namespace Yarr { |
35 | |
36 | #define YarrStackSpaceForBackTrackInfoPatternCharacter 2 // Only for !fixed quantifiers. |
37 | #define YarrStackSpaceForBackTrackInfoCharacterClass 2 // Only for !fixed quantifiers. |
38 | #define YarrStackSpaceForBackTrackInfoBackReference 2 |
39 | #define YarrStackSpaceForBackTrackInfoAlternative 1 // One per alternative. |
40 | #define YarrStackSpaceForBackTrackInfoParentheticalAssertion 1 |
41 | #define YarrStackSpaceForBackTrackInfoParenthesesOnce 2 |
42 | #define YarrStackSpaceForBackTrackInfoParenthesesTerminal 1 |
43 | #define YarrStackSpaceForBackTrackInfoParentheses 4 |
44 | #define YarrStackSpaceForDotStarEnclosure 1 |
45 | |
46 | static const unsigned quantifyInfinite = UINT_MAX; |
47 | static const unsigned offsetNoMatch = std::numeric_limits<unsigned>::max(); |
48 | |
49 | // The below limit restricts the number of "recursive" match calls in order to |
50 | // avoid spending exponential time on complex regular expressions. |
51 | static const unsigned matchLimit = 1000000; |
52 | |
53 | enum JSRegExpResult { |
54 | JSRegExpMatch = 1, |
55 | JSRegExpNoMatch = 0, |
56 | JSRegExpErrorNoMatch = -1, |
57 | JSRegExpJITCodeFailure = -2, |
58 | JSRegExpErrorHitLimit = -3, |
59 | JSRegExpErrorNoMemory = -4, |
60 | JSRegExpErrorInternal = -5, |
61 | }; |
62 | |
63 | enum YarrCharSize { |
64 | Char8, |
65 | Char16 |
66 | }; |
67 | |
68 | enum class BuiltInCharacterClassID : unsigned { |
69 | DigitClassID, |
70 | SpaceClassID, |
71 | WordClassID, |
72 | DotClassID, |
73 | BaseUnicodePropertyID |
74 | }; |
75 | |
76 | struct BytecodePattern; |
77 | |
78 | } } // namespace JSC::Yarr |
79 | |