1/*
2 * Copyright (C) 2009-2019 Apple Inc. All rights reserved.
3 * Copyright (C) 2010 Peter Varga ([email protected]), 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 "YarrErrorCode.h"
32
33namespace JSC { namespace Yarr {
34
35#define YarrStackSpaceForBackTrackInfoPatternCharacter 2 // Only for !fixed quantifiers.
36#define YarrStackSpaceForBackTrackInfoCharacterClass 2 // Only for !fixed quantifiers.
37#define YarrStackSpaceForBackTrackInfoBackReference 2
38#define YarrStackSpaceForBackTrackInfoAlternative 1 // One per alternative.
39#define YarrStackSpaceForBackTrackInfoParentheticalAssertion 1
40#define YarrStackSpaceForBackTrackInfoParenthesesOnce 2
41#define YarrStackSpaceForBackTrackInfoParenthesesTerminal 1
42#define YarrStackSpaceForBackTrackInfoParentheses 4
43#define YarrStackSpaceForDotStarEnclosure 1
44
45static constexpr unsigned quantifyInfinite = UINT_MAX;
46static constexpr unsigned offsetNoMatch = std::numeric_limits<unsigned>::max();
47
48// The below limit restricts the number of "recursive" match calls in order to
49// avoid spending exponential time on complex regular expressions.
50static constexpr unsigned matchLimit = 1000000;
51
52enum JSRegExpResult {
53 JSRegExpMatch = 1,
54 JSRegExpNoMatch = 0,
55 JSRegExpErrorNoMatch = -1,
56 JSRegExpJITCodeFailure = -2,
57 JSRegExpErrorHitLimit = -3,
58 JSRegExpErrorNoMemory = -4,
59 JSRegExpErrorInternal = -5,
60};
61
62enum YarrCharSize {
63 Char8,
64 Char16
65};
66
67enum class BuiltInCharacterClassID : unsigned {
68 DigitClassID,
69 SpaceClassID,
70 WordClassID,
71 DotClassID,
72 BaseUnicodePropertyID
73};
74
75struct BytecodePattern;
76
77} } // namespace JSC::Yarr
78