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LibWeb: Factor out the "stack of open elements" into its own class
This will allow us to write more expressive parsing code. :^)
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5 changed files with 93 additions and 28 deletions
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Libraries/LibWeb/Parser/StackOfOpenElements.h
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Libraries/LibWeb/Parser/StackOfOpenElements.h
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/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* 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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (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 <AK/NonnullRefPtrVector.h>
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#include <LibWeb/DOM/Element.h>
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#include <LibWeb/Forward.h>
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namespace Web {
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class StackOfOpenElements {
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public:
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StackOfOpenElements() { }
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~StackOfOpenElements();
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bool is_empty() const { return m_elements.is_empty(); }
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void push(NonnullRefPtr<Element> element) { m_elements.append(move(element)); }
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NonnullRefPtr<Element> pop() { return m_elements.take_last(); }
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const Element& current_node() const { return m_elements.last(); }
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Element& current_node() { return m_elements.last(); }
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bool has_in_scope(const FlyString& tag_name) const;
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private:
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NonnullRefPtrVector<Element> m_elements;
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};
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}
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