| 1 | /*
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| 2 | * Copyright (C) 2010 University of Szeged
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| 3 | * Copyright (C) 2010 Renata Hodovan ([email protected])
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | * 1. Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * 2. Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | *
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| 15 | * THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY
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| 16 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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| 18 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL UNIVERSITY OF SZEGED OR
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| 19 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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| 20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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| 21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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| 22 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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| 23 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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| 25 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 26 | */
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| 27 |
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| 28 | #include "RegExp.h"
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| 29 | #include "RegExpKey.h"
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| 30 | #include "UString.h"
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| 31 |
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| 32 | #ifndef RegExpCache_h
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| 33 | #define RegExpCache_h
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| 34 |
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| 35 | namespace JSC {
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| 36 |
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| 37 | class RegExpCache {
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| 38 |
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| 39 | typedef HashMap<RegExpKey, RefPtr<RegExp> > RegExpCacheMap;
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| 40 |
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| 41 | public:
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| 42 | PassRefPtr<RegExp> lookupOrCreate(const UString& patternString, const UString& flags);
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| 43 | PassRefPtr<RegExp> create(const UString& patternString, const UString& flags, RegExpCacheMap::iterator iterator);
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| 44 | RegExpCache(JSGlobalData* globalData);
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| 45 |
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| 46 | private:
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| 47 | static const unsigned maxCacheablePatternLength = 256;
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| 48 | static const int maxCacheableEntries = 256;
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| 49 |
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| 50 | FixedArray<RegExpKey, maxCacheableEntries> patternKeyArray;
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| 51 | RegExpCacheMap m_cacheMap;
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| 52 | JSGlobalData* m_globalData;
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| 53 | int m_nextKeyToEvict;
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| 54 | bool m_isFull;
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| 55 | };
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| 56 |
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| 57 | } // namespace JSC
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| 58 |
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| 59 | #endif // RegExpCache_h
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