1 // -*- mode: c++; c-basic-offset: 4 -*- 2 /* 3 * Copyright (C) 2008 Apple Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef BatchedTransitionOptimizer_h 28 #define BatchedTransitionOptimizer_h 29 30 #include "JSObject.h" 31 32 namespace JSC { 33 34 class BatchedTransitionOptimizer { 35 WTF_MAKE_NONCOPYABLE(BatchedTransitionOptimizer); 36 public: BatchedTransitionOptimizer(JSGlobalData & globalData,JSObject * object)37 BatchedTransitionOptimizer(JSGlobalData& globalData, JSObject* object) 38 : m_globalData(&globalData) 39 , m_object(object) 40 { 41 if (!m_object->structure()->isDictionary()) 42 m_object->setStructure(globalData, Structure::toCacheableDictionaryTransition(globalData, m_object->structure())); 43 } 44 ~BatchedTransitionOptimizer()45 ~BatchedTransitionOptimizer() 46 { 47 m_object->flattenDictionaryObject(*m_globalData); 48 } 49 50 private: 51 JSGlobalData* m_globalData; 52 JSObject* m_object; 53 }; 54 55 } // namespace JSC 56 57 #endif // BatchedTransitionOptimizer_h 58