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/*
* Copyright (C) 2011, 2013 Apple Inc. 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 APPLE AND ITS CONTRIBUTORS "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 APPLE OR ITS 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.
*/
#ifndef SelectorQuery_h
#define SelectorQuery_h
#include "CSSSelectorList.h"
#include "NodeList.h"
#include "SelectorCompiler.h"
#include <wtf/HashMap.h>
#include <wtf/Vector.h>
#include <wtf/text/AtomicStringHash.h>
namespace WebCore {
typedef int ExceptionCode;
class CSSSelector;
class ContainerNode;
class Document;
class Element;
class Node;
class NodeList;
class SelectorDataList {
public:
void initialize(const CSSSelectorList&);
bool matches(Element&) const;
RefPtr<NodeList> queryAll(ContainerNode& rootNode) const;
Element* queryFirst(ContainerNode& rootNode) const;
private:
struct SelectorData {
SelectorData(const CSSSelector* selector, bool isFastCheckable) : selector(selector), isFastCheckable(isFastCheckable) { }
const CSSSelector* selector;
bool isFastCheckable;
#if ENABLE(CSS_SELECTOR_JIT)
mutable SelectorCompilationStatus compilationStatus;
mutable JSC::MacroAssemblerCodeRef compiledSelectorCodeRef;
#endif // ENABLE(CSS_SELECTOR_JIT)
};
bool selectorMatches(const SelectorData&, Element&, const ContainerNode& rootNode) const;
template <typename SelectorQueryTrait> void execute(ContainerNode& rootNode, typename SelectorQueryTrait::OutputType&) const;
template <typename SelectorQueryTrait> void executeFastPathForIdSelector(const ContainerNode& rootNode, const SelectorData&, const CSSSelector* idSelector, typename SelectorQueryTrait::OutputType&) const;
template <typename SelectorQueryTrait> void executeSingleTagNameSelectorData(const ContainerNode& rootNode, const SelectorData&, typename SelectorQueryTrait::OutputType&) const;
template <typename SelectorQueryTrait> void executeSingleClassNameSelectorData(const ContainerNode& rootNode, const SelectorData&, typename SelectorQueryTrait::OutputType&) const;
template <typename SelectorQueryTrait> void executeSingleSelectorData(const ContainerNode& rootNode, const SelectorData&, typename SelectorQueryTrait::OutputType&) const;
template <typename SelectorQueryTrait> void executeSingleMultiSelectorData(const ContainerNode& rootNode, typename SelectorQueryTrait::OutputType&) const;
#if ENABLE(CSS_SELECTOR_JIT)
template <typename SelectorQueryTrait> void executeCompiledSimpleSelectorChecker(const ContainerNode& rootNode, SelectorCompiler::SimpleSelectorChecker, typename SelectorQueryTrait::OutputType&) const;
template <typename SelectorQueryTrait> void executeCompiledSelectorCheckerWithContext(const ContainerNode& rootNode, SelectorCompiler::SelectorCheckerWithCheckingContext, const SelectorCompiler::CheckingContext&, typename SelectorQueryTrait::OutputType&) const;
#endif // ENABLE(CSS_SELECTOR_JIT)
Vector<SelectorData> m_selectors;
};
class SelectorQuery {
WTF_MAKE_NONCOPYABLE(SelectorQuery);
WTF_MAKE_FAST_ALLOCATED;
public:
explicit SelectorQuery(const CSSSelectorList&);
bool matches(Element&) const;
RefPtr<NodeList> queryAll(ContainerNode& rootNode) const;
Element* queryFirst(ContainerNode& rootNode) const;
private:
SelectorDataList m_selectors;
CSSSelectorList m_selectorList;
};
class SelectorQueryCache {
WTF_MAKE_FAST_ALLOCATED;
public:
SelectorQuery* add(const AtomicString&, Document&, ExceptionCode&);
void invalidate();
private:
HashMap<AtomicString, std::unique_ptr<SelectorQuery>> m_entries;
};
inline bool SelectorQuery::matches(Element& element) const
{
return m_selectors.matches(element);
}
inline RefPtr<NodeList> SelectorQuery::queryAll(ContainerNode& rootNode) const
{
return m_selectors.queryAll(rootNode);
}
inline Element* SelectorQuery::queryFirst(ContainerNode& rootNode) const
{
return m_selectors.queryFirst(rootNode);
}
}
#endif
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