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/****************************************************************************
**
** Copyright (C) 2011 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qdeduplicateiterator_p.h"
QT_BEGIN_NAMESPACE
using namespace QPatternist;
DeduplicateIterator::DeduplicateIterator(const Item::List &source) : ListIterator<Item>(source)
, m_listPos(0)
{
Q_ASSERT(!Item());
Q_ASSERT(!Item().isNode());
Q_ASSERT(!Item().isAtomicValue());
}
Item DeduplicateIterator::next()
{
if(m_listPos == m_list.count())
{
m_current.reset();
m_position = -1;
return Item();
}
Item next(m_list.at(m_listPos));
while(next.asNode().is(m_current.asNode()))
{
++m_listPos;
if(m_listPos == m_list.count())
{
m_current.reset();
m_position = -1;
return Item();
}
else
next = m_list.at(m_listPos);
}
++m_position;
m_current = next;
return next;
}
xsInteger DeduplicateIterator::count()
{
return QAbstractXmlForwardIterator<Item>::count();
}
Item::Iterator::Ptr DeduplicateIterator::copy() const
{
return Item::Iterator::Ptr(new DeduplicateIterator(m_list));
}
QT_END_NAMESPACE
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