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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
#ifndef Patternist_NamespaceSupport_H
#define Patternist_NamespaceSupport_H
#include <private/qnamepool_p.h>
#include <QtCore/QExplicitlySharedDataPointer>
#include <QtCore/QHash>
#include <QtCore/QSet>
#include <QtCore/QStack>
#include <QtCore/QXmlStreamNamespaceDeclarations>
QT_BEGIN_NAMESPACE
namespace QPatternist
{
/**
* @short A helper class for handling nested namespace declarations.
*
* This class is mostly an adaption of QXmlNamespaceSupport to the NamePool
* mechanism used in XmlPatterns.
*
* @ingroup Patternist_schema
* @author Tobias Koenig <tobias.koenig@nokia.com>
*/
class NamespaceSupport
{
public:
/**
* Describes whether the name to process is an attribute or element.
*/
enum NameType
{
AttributeName, ///< An attribute name to process.
ElementName ///< An element name to process.
};
/**
* Creates an empty namespace support object.
*/
NamespaceSupport();
/**
* Creates a new namespace support object.
*
* @param namePool The name pool where all processed names are stored in.
*/
NamespaceSupport(const NamePool::Ptr &namePool);
/**
* Adds a new prefix-to-namespace binding.
*
* @param prefixCode The name pool code for the prefix.
* @param namespaceCode The name pool code for the namespace.
*/
void setPrefix(const QXmlName::PrefixCode prefixCode, const QXmlName::NamespaceCode namespaceCode);
/**
* Adds the prefix-to-namespace bindings from @p declarations to
* the namespace support.
*/
void setPrefixes(const QXmlStreamNamespaceDeclarations &declarations);
/**
* Sets the name pool code of the target namespace of the schema the
* namespace support works on.
*/
void setTargetNamespace(const QXmlName::NamespaceCode code);
/**
* Returns the prefix code for the given namespace @p code.
*/
QXmlName::PrefixCode prefix(const QXmlName::NamespaceCode code) const;
/**
* Returns the namespace code for the given prefix @p code.
*/
QXmlName::NamespaceCode uri(const QXmlName::PrefixCode code) const;
/**
* Converts the given @p qualifiedName to a resolved QXmlName @p name according
* to the current namespace mapping.
*
* @param qualifiedName The full qualified name.
* @param type The type of name processing.
* @param name The resolved QXmlName.
*
* @returns @c true if the name could be processed correctly or @c false if the
* namespace prefix is unknown.
*/
bool processName(const QString &qualifiedName, NameType type, QXmlName &name) const;
/**
* Pushes the current namespace mapping onto the stack.
*/
void pushContext();
/**
* Pops the current namespace mapping from the stack.
*/
void popContext();
/**
* Returns the list of namespace bindings.
*/
QList<QXmlName> namespaceBindings() const;
private:
typedef QHash<QXmlName::PrefixCode, QXmlName::NamespaceCode> NamespaceHash;
NamePool::Ptr m_namePool;
QStack<NamespaceHash> m_nsStack;
NamespaceHash m_ns;
};
}
QT_END_NAMESPACE
#endif
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