202 lines
5.9 KiB
C++
202 lines
5.9 KiB
C++
/*
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* Copyright (C) 2013 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "RenderIterator.h"
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namespace WebCore {
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template <typename T>
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class RenderAncestorIterator : public RenderIterator<T> {
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public:
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RenderAncestorIterator();
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explicit RenderAncestorIterator(T* current);
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RenderAncestorIterator& operator++();
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};
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template <typename T>
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class RenderAncestorConstIterator : public RenderConstIterator<T> {
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public:
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RenderAncestorConstIterator();
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explicit RenderAncestorConstIterator(const T* current);
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RenderAncestorConstIterator& operator++();
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};
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template <typename T>
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class RenderAncestorIteratorAdapter {
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public:
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RenderAncestorIteratorAdapter(T* first);
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RenderAncestorIterator<T> begin();
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RenderAncestorIterator<T> end();
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T* first();
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private:
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T* m_first;
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};
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template <typename T>
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class RenderAncestorConstIteratorAdapter {
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public:
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RenderAncestorConstIteratorAdapter(const T* first);
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RenderAncestorConstIterator<T> begin() const;
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RenderAncestorConstIterator<T> end() const;
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const T* first() const;
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private:
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const T* m_first;
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};
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template <typename T> RenderAncestorIteratorAdapter<T> ancestorsOfType(RenderObject&);
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template <typename T> RenderAncestorConstIteratorAdapter<T> ancestorsOfType(const RenderObject&);
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template <typename T> RenderAncestorIteratorAdapter<T> lineageOfType(RenderObject&);
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template <typename T> RenderAncestorConstIteratorAdapter<T> lineageOfType(const RenderObject&);
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// RenderAncestorIterator
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template <typename T>
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inline RenderAncestorIterator<T>::RenderAncestorIterator()
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: RenderIterator<T>(nullptr)
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{
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}
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template <typename T>
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inline RenderAncestorIterator<T>::RenderAncestorIterator(T* current)
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: RenderIterator<T>(nullptr, current)
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{
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}
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template <typename T>
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inline RenderAncestorIterator<T>& RenderAncestorIterator<T>::operator++()
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{
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return static_cast<RenderAncestorIterator<T>&>(RenderIterator<T>::traverseAncestor());
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}
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// RenderAncestorConstIterator
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template <typename T>
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inline RenderAncestorConstIterator<T>::RenderAncestorConstIterator()
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: RenderConstIterator<T>(nullptr)
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{
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}
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template <typename T>
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inline RenderAncestorConstIterator<T>::RenderAncestorConstIterator(const T* current)
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: RenderConstIterator<T>(nullptr, current)
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{
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}
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template <typename T>
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inline RenderAncestorConstIterator<T>& RenderAncestorConstIterator<T>::operator++()
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{
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return static_cast<RenderAncestorConstIterator<T>&>(RenderConstIterator<T>::traverseAncestor());
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}
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// RenderAncestorIteratorAdapter
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template <typename T>
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inline RenderAncestorIteratorAdapter<T>::RenderAncestorIteratorAdapter(T* first)
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: m_first(first)
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{
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}
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template <typename T>
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inline RenderAncestorIterator<T> RenderAncestorIteratorAdapter<T>::begin()
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{
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return RenderAncestorIterator<T>(m_first);
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}
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template <typename T>
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inline RenderAncestorIterator<T> RenderAncestorIteratorAdapter<T>::end()
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{
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return RenderAncestorIterator<T>();
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}
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template <typename T>
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inline T* RenderAncestorIteratorAdapter<T>::first()
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{
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return m_first;
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}
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// RenderAncestorConstIteratorAdapter
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template <typename T>
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inline RenderAncestorConstIteratorAdapter<T>::RenderAncestorConstIteratorAdapter(const T* first)
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: m_first(first)
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{
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}
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template <typename T>
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inline RenderAncestorConstIterator<T> RenderAncestorConstIteratorAdapter<T>::begin() const
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{
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return RenderAncestorConstIterator<T>(m_first);
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}
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template <typename T>
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inline RenderAncestorConstIterator<T> RenderAncestorConstIteratorAdapter<T>::end() const
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{
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return RenderAncestorConstIterator<T>();
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}
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template <typename T>
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inline const T* RenderAncestorConstIteratorAdapter<T>::first() const
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{
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return m_first;
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}
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// Standalone functions
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template <typename T>
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inline RenderAncestorIteratorAdapter<T> ancestorsOfType(RenderObject& descendant)
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{
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T* first = RenderTraversal::findAncestorOfType<T>(descendant);
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return RenderAncestorIteratorAdapter<T>(first);
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}
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template <typename T>
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inline RenderAncestorConstIteratorAdapter<T> ancestorsOfType(const RenderObject& descendant)
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{
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const T* first = RenderTraversal::findAncestorOfType<const T>(descendant);
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return RenderAncestorConstIteratorAdapter<T>(first);
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}
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template <typename T>
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inline RenderAncestorIteratorAdapter<T> lineageOfType(RenderObject& first)
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{
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if (isRendererOfType<T>(first))
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return RenderAncestorIteratorAdapter<T>(static_cast<T*>(&first));
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return ancestorsOfType<T>(first);
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}
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template <typename T>
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inline RenderAncestorConstIteratorAdapter<T> lineageOfType(const RenderObject& first)
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{
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if (isRendererOfType<T>(first))
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return RenderAncestorConstIteratorAdapter<T>(static_cast<const T*>(&first));
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return ancestorsOfType<T>(first);
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}
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} // namespace WebCore
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