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/*
* Copyright (C) 2024 Apple Inc. 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 APPLE INC. ``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 APPLE INC. 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.
*/
#pragma once
#include "MatchResult.h"
#include "SlotVisitorMacros.h"
#include "WriteBarrier.h"
namespace JSC {
class JSString;
class JSRopeString;
class RegExp;
// This class is used to track the cached results of the last match
// on a substring with global and atomic pattern regexp. It's
// looking for the code pattern:
//
// str.substring(0, 50).match(regExp);
// str.substring(0, 60).match(regExp);
class RegExpSubstringGlobalAtomCache {
public:
JSValue collectMatches(JSGlobalObject*, JSRopeString* substring, RegExp*);
DECLARE_VISIT_AGGREGATE;
private:
WriteBarrier<JSString> m_lastSubstringBase;
unsigned m_lastSubstringOffset;
unsigned m_lastSubstringLength;
WriteBarrier<RegExp> m_lastRegExp;
size_t m_lastNumberOfMatches { 0 };
size_t m_lastMatchEnd { 0 };
MatchResult m_lastResult { };
};
} // namespace JSC
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