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

**

** 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 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_PULLBRIDGE_P_H

#define PATTERNIST_PULLBRIDGE_P_H

#include <QtCore/QPair>

#include <QtCore/QStack>

#include "qabstractxmlforwarditerator_p.h"

#include "qabstractxmlpullprovider_p.h"

#include "qitem_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternist

{

    class PullBridge : public AbstractXmlPullProvider

    {

    public:

        inline PullBridge(const QXmlNodeModelIndex::Iterator::Ptr &it) : m_current(StartOfInput)

        {

            Q_ASSERT(it);

            m_iterators.push(qMakePair(StartOfInput, it));

        }

        virtual Event next();

        virtual Event current() const;

        virtual QXmlName name() const;

        /**

         * Returns always an empty QVariant.

         */

        virtual QVariant atomicValue() const;

        virtual QString stringValue() const;

        virtual QHash<QXmlName, QString> attributes();

        virtual QHash<QXmlName, QXmlItem> attributeItems();

        QXmlNodeModelIndex index() const;

        QSourceLocation sourceLocation() const;

    private:

        typedef QStack<QPair<Event, QXmlNodeModelIndex::Iterator::Ptr> > IteratorStack;

        IteratorStack      m_iterators;

        QXmlNodeModelIndex m_index;

        Event              m_current;

    };

}

QT_END_NAMESPACE

QT_END_HEADER

#endif