90 lines
3.7 KiB
C++
90 lines
3.7 KiB
C++
/*
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* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
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* (C) 1999 Antti Koivisto (koivisto@kde.org)
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* (C) 2001 Peter Kelly (pmk@post.com)
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* (C) 2001 Dirk Mueller (mueller@kde.org)
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* Copyright (C) 2003, 2004, 2005, 2006, 2008, 2012, 2014 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#pragma once
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#include "QualifiedName.h"
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namespace WebCore {
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// This has no counterpart in DOM.
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// It is an internal representation of the node value of an Attr.
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// The actual Attr with its value as a Text child is allocated only if needed.
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class Attribute {
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public:
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Attribute(const QualifiedName& name, const AtomString& value)
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: m_name(name)
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, m_value(value)
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{
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}
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// NOTE: The references returned by these functions are only valid for as long
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// as the Attribute stays in place. For example, calling a function that mutates
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// an Element's internal attribute storage may invalidate them.
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const AtomString& value() const { return m_value; }
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static ptrdiff_t valueMemoryOffset() { return OBJECT_OFFSETOF(Attribute, m_value); }
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const AtomString& prefix() const { return m_name.prefix(); }
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const AtomString& localName() const { return m_name.localName(); }
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const AtomString& namespaceURI() const { return m_name.namespaceURI(); }
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const QualifiedName& name() const { return m_name; }
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static ptrdiff_t nameMemoryOffset() { return OBJECT_OFFSETOF(Attribute, m_name); }
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bool isEmpty() const { return m_value.isEmpty(); }
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static bool nameMatchesFilter(const QualifiedName&, const AtomString& filterPrefix, const AtomString& filterLocalName, const AtomString& filterNamespaceURI);
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bool matches(const AtomString& prefix, const AtomString& localName, const AtomString& namespaceURI) const;
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void setValue(const AtomString& value) { m_value = value; }
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void setPrefix(const AtomString& prefix) { m_name.setPrefix(prefix); }
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// Note: This API is only for HTMLTreeBuilder. It is not safe to change the
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// name of an attribute once parseAttribute has been called as DOM
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// elements may have placed the Attribute in a hash by name.
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void parserSetName(const QualifiedName& name) { m_name = name; }
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#if COMPILER(MSVC)
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// NOTE: This constructor is not actually implemented, it's just defined so MSVC
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// will let us use a zero-length array of Attributes.
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Attribute();
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#endif
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private:
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QualifiedName m_name;
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AtomString m_value;
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};
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inline bool Attribute::nameMatchesFilter(const QualifiedName& name, const AtomString& filterPrefix, const AtomString& filterLocalName, const AtomString& filterNamespaceURI)
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{
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if (filterLocalName != name.localName())
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return false;
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return filterPrefix == starAtom() || filterNamespaceURI == name.namespaceURI();
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}
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inline bool Attribute::matches(const AtomString& prefix, const AtomString& localName, const AtomString& namespaceURI) const
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{
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return nameMatchesFilter(m_name, prefix, localName, namespaceURI);
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}
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} // namespace WebCore
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