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/****************************************************************************
**
** Copyright (C) 2010 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_DeduplicateIterator_H
#define Patternist_DeduplicateIterator_H
#include <QList>
#include "qexpression_p.h"
#include "qitem_p.h"
#include "qatomiccomparator_p.h"
#include "qcomparisonplatform_p.h"
#include "qsourcelocationreflection_p.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
namespace QPatternist
{
/**
* @short Performs deduplication of the nodes on its source list.
*
* @note The nodes in the source list must be in document order.
*
* @author Frans Englich <frans.englich@nokia.com>
* @ingroup Patternist_iterators
*/
class DeduplicateIterator : public ListIterator<Item>
{
public:
DeduplicateIterator(const Item::List &source);
virtual Item next();
virtual Item::Iterator::Ptr copy() const;
virtual xsInteger count();
private:
/**
* m_position in ListIteratorPlatform is the position that we
* show to the outside through position) but do not correspond
* to the position in m_list, since we skip entries in that one.
*
* However, this guy, m_listPos, is the position into m_list.
*/
int m_listPos;
};
}
QT_END_NAMESPACE
QT_END_HEADER
#endif
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