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/****************************************************************************
**
** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtXmlPatterns of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//
// 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 "qnamepool_p.h"
#include <QtCore/QExplicitlySharedDataPointer>
#include <QtCore/QHash>
#include <QtCore/QSet>
#include <QtCore/QStack>
#include <QtCore/QXmlStreamNamespaceDeclarations>
QT_BEGIN_HEADER
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
QT_END_HEADER
#endif
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