/**************************************************************************** | |
** | |
** 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. | |
** | |
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** $QT_END_LICENSE$ | |
** | |
****************************************************************************/ | |
#include "qitem_p.h" | |
#include "qunioniterator_p.h" | |
QT_BEGIN_NAMESPACE | |
using namespace QPatternist; | |
UnionIterator::UnionIterator(const Item::Iterator::Ptr &it1, | |
const Item::Iterator::Ptr &it2) : m_it1(it1), | |
m_it2(it2), | |
m_position(0), | |
m_node1(m_it1->next()), | |
m_node2(m_it2->next()) | |
{ | |
Q_ASSERT(m_it1); | |
Q_ASSERT(m_it2); | |
} | |
Item UnionIterator::next() | |
{ | |
++m_position; | |
if(m_node1 && m_node2) | |
{ | |
if(m_node1.asNode().model() != m_node2.asNode().model()) | |
{ | |
m_current = m_node1; | |
m_node1 = m_it1->next(); | |
return m_current; | |
} | |
switch(m_node1.asNode().compareOrder(m_node2.asNode())) | |
{ | |
case QXmlNodeModelIndex::Precedes: | |
{ | |
m_current = m_node1; | |
m_node1 = m_it1->next(); | |
return m_current; | |
} | |
case QXmlNodeModelIndex::Follows: | |
{ | |
m_current = m_node2; | |
m_node2 = m_it2->next(); | |
return m_current; | |
} | |
default: | |
{ | |
m_current = m_node2; | |
m_node1 = m_it1->next(); | |
m_node2 = m_it2->next(); | |
return m_current; | |
} | |
} | |
} | |
if(m_node1) | |
{ | |
m_current = m_node1; | |
m_node1 = m_it1->next(); | |
return m_current; | |
} | |
if(m_node2) | |
{ | |
m_current = m_node2; | |
m_node2 = m_it2->next(); | |
return m_current; | |
} | |
m_current.reset(); | |
m_position = -1; | |
return Item(); | |
} | |
Item UnionIterator::current() const | |
{ | |
return m_current; | |
} | |
xsInteger UnionIterator::position() const | |
{ | |
return m_position; | |
} | |
Item::Iterator::Ptr UnionIterator::copy() const | |
{ | |
return Item::Iterator::Ptr(new UnionIterator(m_it1->copy(), m_it2->copy())); | |
} | |
QT_END_NAMESPACE |