1/* 2 * Copyright (C) 2008 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef CSSSelectorList_h 27#define CSSSelectorList_h 28 29#include "CSSSelector.h" 30 31namespace WebCore { 32 33class CSSParserSelector; 34 35class CSSSelectorList { 36 WTF_MAKE_FAST_ALLOCATED; 37public: 38 CSSSelectorList() : m_selectorArray(0) { } 39 CSSSelectorList(const CSSSelectorList&); 40 41 ~CSSSelectorList(); 42 43 void adopt(CSSSelectorList& list); 44 void adoptSelectorVector(Vector<OwnPtr<CSSParserSelector> >& selectorVector); 45 void adoptSelectorArray(CSSSelector* selectors) { ASSERT(!m_selectorArray); m_selectorArray = selectors; } 46 47 bool isValid() const { return !!m_selectorArray; } 48 const CSSSelector* first() const { return m_selectorArray; } 49 static const CSSSelector* next(const CSSSelector*); 50 bool hasOneSelector() const { return m_selectorArray && !next(m_selectorArray); } 51 const CSSSelector* selectorAt(size_t index) const { return &m_selectorArray[index]; } 52 53 size_t indexOfNextSelectorAfter(size_t index) const 54 { 55 const CSSSelector* current = selectorAt(index); 56 current = next(current); 57 if (!current) 58 return notFound; 59 return current - m_selectorArray; 60 } 61 62 bool selectorsNeedNamespaceResolution(); 63 bool hasInvalidSelector() const; 64 65 String selectorsText() const; 66 67 unsigned componentCount() const; 68 69private: 70 void deleteSelectors(); 71 72 // End of a multipart selector is indicated by m_isLastInTagHistory bit in the last item. 73 // End of the array is indicated by m_isLastInSelectorList bit in the last item. 74 CSSSelector* m_selectorArray; 75}; 76 77inline const CSSSelector* CSSSelectorList::next(const CSSSelector* current) 78{ 79 // Skip subparts of compound selectors. 80 while (!current->isLastInTagHistory()) 81 current++; 82 return current->isLastInSelectorList() ? 0 : current + 1; 83} 84 85} // namespace WebCore 86 87#endif // CSSSelectorList_h 88