WebCore/CSSSelectorList.h

   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 #include <wtf/Noncopyable.h>
  31
  32 namespace WebCore {
  33
  34     class CSSSelectorList : Noncopyable {
  35     public:
  36         CSSSelectorList() : m_selectorArray(0) { }
  37         ~CSSSelectorList();
  38
  39         void adopt(CSSSelectorList& list);
  40         void adoptSelectorVector(Vector<CSSSelector*>& selectorVector);
  41
  42         CSSSelector* first() const { return m_selectorArray ? m_selectorArray : 0; }
  43         static CSSSelector* next(CSSSelector* previous) { return previous->isLastInSelectorList() ? 0 : previous + 1; }
  44         bool hasOneSelector() const { return m_selectorArray ? m_selectorArray->isLastInSelectorList() : false; }
  45
  46     private:
  47         void deleteSelectors();
  48
  49         // End of the array is indicated by m_isLastInSelectorList bit in the last item.
  50         CSSSelector* m_selectorArray;
  51     };
  52
  53 }
  54
  55 #endif