| /* |
| * Copyright (C) 2010 University of Szeged |
| * Copyright (C) 2010 Renata Hodovan (hodovan@inf.u-szeged.hu) |
| * 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. |
| */ |
| |
| #include "RegExp.h" |
| #include "RegExpKey.h" |
| #include "Strong.h" |
| #include "Weak.h" |
| #include <wtf/FixedArray.h> |
| #include <wtf/HashMap.h> |
| |
| #ifndef RegExpCache_h |
| #define RegExpCache_h |
| |
| namespace JSC { |
| |
| class RegExpCache : private WeakHandleOwner { |
| friend class RegExp; |
| typedef HashMap<RegExpKey, Weak<RegExp> > RegExpCacheMap; |
| |
| public: |
| RegExpCache(JSGlobalData* globalData); |
| void invalidateCode(); |
| |
| private: |
| |
| static const unsigned maxStrongCacheablePatternLength = 256; |
| |
| static const int maxStrongCacheableEntries = 32; |
| |
| virtual void finalize(Handle<Unknown>, void* context); |
| |
| RegExp* lookupOrCreate(const WTF::String& patternString, RegExpFlags); |
| void addToStrongCache(RegExp*); |
| RegExpCacheMap m_weakCache; // Holds all regular expressions currently live. |
| int m_nextEntryInStrongCache; |
| WTF::FixedArray<Strong<RegExp>, maxStrongCacheableEntries> m_strongCache; // Holds a select few regular expressions that have compiled and executed |
| JSGlobalData* m_globalData; |
| }; |
| |
| } // namespace JSC |
| |
| #endif // RegExpCache_h |