73 lines
2.6 KiB
C++
73 lines
2.6 KiB
C++
/*
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* Copyright (C) 2013-2015 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 "ScriptDisallowedScope.h"
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namespace WebCore {
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class ElementIteratorAssertions {
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public:
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ElementIteratorAssertions(const Node* first = nullptr);
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bool domTreeHasMutated() const;
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void dropEventDispatchAssertion();
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void clear();
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private:
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const Document* m_document;
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uint64_t m_initialDOMTreeVersion;
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std::optional<ScriptDisallowedScope> m_eventDispatchAssertion;
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};
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// FIXME: No real point in doing these as inlines; they are for debugging and we usually turn off inlining in debug builds.
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inline ElementIteratorAssertions::ElementIteratorAssertions(const Node* first)
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: m_document(first ? &first->document() : nullptr)
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, m_initialDOMTreeVersion(first ? m_document->domTreeVersion() : 0)
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{
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if (first)
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m_eventDispatchAssertion = ScriptDisallowedScope();
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}
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inline bool ElementIteratorAssertions::domTreeHasMutated() const
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{
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return m_document && m_document->domTreeVersion() != m_initialDOMTreeVersion;
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}
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inline void ElementIteratorAssertions::dropEventDispatchAssertion()
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{
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m_eventDispatchAssertion = std::nullopt;
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}
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inline void ElementIteratorAssertions::clear()
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{
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m_document = nullptr;
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m_initialDOMTreeVersion = 0;
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m_eventDispatchAssertion = std::nullopt;
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}
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} // namespace WebCore
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