The Tor Browser: js/src/yarr/Yarr.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-

     2  * vim: set ts=8 sts=4 et sw=4 tw=99:

     3  *

     4  * Copyright (C) 2009 Apple Inc. All rights reserved.

     5  * Copyright (C) 2010 Peter Varga (pvarga@inf.u-szeged.hu), University of Szeged

     6  * All rights reserved.

     7  *

     8  * Redistribution and use in source and binary forms, with or without

     9  * modification, are permitted provided that the following conditions

    10  * are met:

    11  * 1. Redistributions of source code must retain the above copyright

    12  *    notice, this list of conditions and the following disclaimer.

    13  * 2. Redistributions in binary form must reproduce the above copyright

    14  *    notice, this list of conditions and the following disclaimer in the

    15  *    documentation and/or other materials provided with the distribution.

    16  *

    17  * THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY

    18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    20  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL UNIVERSITY OF SZEGED OR

    21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

    22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

    23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

    24  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

    25  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    27  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    28  */

    30 #ifndef yarr_Yarr_h

    31 #define yarr_Yarr_h

    33 #include <limits.h>

    34 #include "yarr/YarrInterpreter.h"

    35 #include "yarr/YarrPattern.h"

    37 namespace JSC { namespace Yarr {

    39 #define YarrStackSpaceForBackTrackInfoPatternCharacter 1 // Only for !fixed quantifiers.

    40 #define YarrStackSpaceForBackTrackInfoCharacterClass 1 // Only for !fixed quantifiers.

    41 #define YarrStackSpaceForBackTrackInfoBackReference 2

    42 #define YarrStackSpaceForBackTrackInfoAlternative 1 // One per alternative.

    43 #define YarrStackSpaceForBackTrackInfoParentheticalAssertion 1

    44 #define YarrStackSpaceForBackTrackInfoParenthesesOnce 1 // Only for !fixed quantifiers.

    45 #define YarrStackSpaceForBackTrackInfoParenthesesTerminal 1

    46 #define YarrStackSpaceForBackTrackInfoParentheses 2

    48 static const unsigned quantifyInfinite = UINT_MAX;

    49 static const unsigned offsetNoMatch = (unsigned)-1;

    50 static const unsigned offsetError = (unsigned)-2;

    52 // The below limit restricts the number of "recursive" match calls in order to

    53 // avoid spending exponential time on complex regular expressions.

    54 static const unsigned matchLimit = 2500000;

    56 enum JSRegExpResult {

    57     JSRegExpMatch = 1,

    58     JSRegExpNoMatch = 0,

    59     JSRegExpErrorNoMatch = -1,

    60     JSRegExpErrorHitLimit = -2,

    61     JSRegExpErrorNoMemory = -3,

    62     JSRegExpErrorInternal = -4

    63 };

    65 enum YarrCharSize {

    66     Char8,

    67     Char16

    68 };

    70 } } // namespace JSC::Yarr

    72 #endif /* yarr_Yarr_h */

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