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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include "qdistinctiterator_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+DistinctIterator::DistinctIterator(const Item::Iterator::Ptr &seq,
+ const AtomicComparator::Ptr &comp,
+ const Expression::ConstPtr &expression,
+ const DynamicContext::Ptr &context)
+ : m_seq(seq)
+ , m_context(context)
+ , m_expr(expression)
+ , m_position(0)
+{
+ Q_ASSERT(seq);
+ prepareComparison(comp);
+}
+
+Item DistinctIterator::next()
+{
+ if(m_position == -1)
+ return Item();
+
+ const Item nitem(m_seq->next());
+ if(!nitem)
+ {
+ m_position = -1;
+ m_current.reset();
+ return Item();
+ }
+
+ const Item::List::const_iterator end(m_processed.constEnd());
+ Item::List::const_iterator it(m_processed.constBegin());
+
+ for(; it != end; ++it)
+ {
+ if(flexibleCompare(*it, nitem, m_context))
+ {
+ return next();
+ }
+ }
+
+ m_current = nitem;
+ ++m_position;
+ m_processed.append(nitem);
+ return nitem;
+}
+
+Item DistinctIterator::current() const
+{
+ return m_current;
+}
+
+xsInteger DistinctIterator::position() const
+{
+ return m_position;
+}
+
+Item::Iterator::Ptr DistinctIterator::copy() const
+{
+ return Item::Iterator::Ptr(new DistinctIterator(m_seq->copy(), comparator(), m_expr, m_context));
+}
+
+const SourceLocationReflection *DistinctIterator::actualReflection() const
+{
+ return m_expr.data();
+}
+
+QT_END_NAMESPACE