/****************************************************************************

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtXmlPatterns module 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_NamespaceBinding_H

#define Patternist_NamespaceBinding_H

template<typename T> class QVector;

#include "qxmlname.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternist

{

    /**

     * @short Represents a namespace binding: a prefix, and a namespace URI.

     *

     * @author Frans Englich <frans.englich@nokia.com>

     */

    class NamespaceBinding

    {

    public:

        enum

        {

            InvalidCode = -1

        };

        typedef QVector<NamespaceBinding> Vector;

        inline NamespaceBinding() : m_prefix(InvalidCode),

                                    m_namespace(InvalidCode)

        {

        }

        inline NamespaceBinding(const QXmlName::PrefixCode p,

                                const QXmlName::NamespaceCode n) : m_prefix(p),

                                                                m_namespace(n)

        {

        }

        inline bool operator==(const NamespaceBinding &other) const

        {

            return m_prefix == other.m_prefix &&

                   m_namespace == other.m_namespace;

        }

        inline QXmlName::PrefixCode prefix() const

        {

            return m_prefix;

        }

        inline QXmlName::NamespaceCode namespaceURI() const

        {

            return m_namespace;

        }

        inline bool isNull() const

        {

            return m_prefix == InvalidCode;

        }

        /**

         * @short Constructs a NamespaceBinding whose prefix and namespace is

         * taken from @p qName.

         *

         * The local name in @p qName is ignored. @p qName may not be null.

         */

        static inline NamespaceBinding fromQXmlName(const QXmlName qName)

        {

            Q_ASSERT(!qName.isNull());

            return NamespaceBinding(qName.prefix(), qName.namespaceURI());

        }

    private:

        QXmlName::PrefixCode      m_prefix;

        QXmlName::NamespaceCode   m_namespace;

    };

    /**

     * @relates NamespaceBinding

     */

    static inline uint qHash(const NamespaceBinding nb)

    {

        return (nb.prefix() << 16) + nb.namespaceURI();

    }

}

QT_END_NAMESPACE

QT_END_HEADER

#endif