[apple/javascriptcore.git] / yarr / Yarr.h

/*
 * 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;
static const unsigned offsetNoMatch = (unsigned)-1;

// 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
};

enum YarrCharSize {
    Char8,
    Char16
};

} } // namespace JSC::Yarr

#endif // Yarr_h
Commit	Line	Data
14957cd0 A	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	#ifndef Yarr_h
	29	#define Yarr_h
	30
	31	#include "YarrInterpreter.h"
	32	#include "YarrPattern.h"
	33
	34	namespace JSC { namespace Yarr {
	35
	36	#define YarrStackSpaceForBackTrackInfoPatternCharacter 1 // Only for !fixed quantifiers.
	37	#define YarrStackSpaceForBackTrackInfoCharacterClass 1 // Only for !fixed quantifiers.
	38	#define YarrStackSpaceForBackTrackInfoBackReference 2
	39	#define YarrStackSpaceForBackTrackInfoAlternative 1 // One per alternative.
	40	#define YarrStackSpaceForBackTrackInfoParentheticalAssertion 1
	41	#define YarrStackSpaceForBackTrackInfoParenthesesOnce 1 // Only for !fixed quantifiers.
	42	#define YarrStackSpaceForBackTrackInfoParenthesesTerminal 1
	43	#define YarrStackSpaceForBackTrackInfoParentheses 2
	44
	45	static const unsigned quantifyInfinite = UINT_MAX;
6fe7ccc8	46	static const unsigned offsetNoMatch = (unsigned)-1;
14957cd0 A	47
	48	// The below limit restricts the number of "recursive" match calls in order to
	49	// avoid spending exponential time on complex regular expressions.
	50	static const unsigned matchLimit = 1000000;
	51
	52	enum JSRegExpResult {
	53	JSRegExpMatch = 1,
	54	JSRegExpNoMatch = 0,
	55	JSRegExpErrorNoMatch = -1,
	56	JSRegExpErrorHitLimit = -2,
	57	JSRegExpErrorNoMemory = -3,
	58	JSRegExpErrorInternal = -4
	59	};
	60
6fe7ccc8 A	61	enum YarrCharSize {
	62	Char8,
	63	Char16
	64	};
14957cd0 A	65
	66	} } // namespace JSC::Yarr
	67
	68	#endif // Yarr_h
	69