/* * Copyright (C) 2009 Apple Inc. All rights reserved. * Copyright (C) 2010 Peter Varga (pvarga@inf.u-szeged.hu), University of Szeged * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL UNIVERSITY OF SZEGED OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef Yarr_h #define Yarr_h #include "YarrInterpreter.h" #include "YarrPattern.h" namespace JSC { namespace Yarr { #define YarrStackSpaceForBackTrackInfoPatternCharacter 1 // Only for !fixed quantifiers. #define YarrStackSpaceForBackTrackInfoCharacterClass 1 // Only for !fixed quantifiers. #define YarrStackSpaceForBackTrackInfoBackReference 2 #define YarrStackSpaceForBackTrackInfoAlternative 1 // One per alternative. #define YarrStackSpaceForBackTrackInfoParentheticalAssertion 1 #define YarrStackSpaceForBackTrackInfoParenthesesOnce 1 // Only for !fixed quantifiers. #define YarrStackSpaceForBackTrackInfoParenthesesTerminal 1 #define YarrStackSpaceForBackTrackInfoParentheses 2 static const unsigned quantifyInfinite = UINT_MAX; // The below limit restricts the number of "recursive" match calls in order to // avoid spending exponential time on complex regular expressions. static const unsigned matchLimit = 1000000; enum JSRegExpResult { JSRegExpMatch = 1, JSRegExpNoMatch = 0, JSRegExpErrorNoMatch = -1, JSRegExpErrorHitLimit = -2, JSRegExpErrorNoMemory = -3, JSRegExpErrorInternal = -4 }; PassOwnPtr<BytecodePattern> byteCompile(YarrPattern&, BumpPointerAllocator*); int interpret(BytecodePattern*, const UChar* input, unsigned start, unsigned length, int* output); } } // namespace JSC::Yarr #endif // Yarr_h