1 /****************************************************************************
3 ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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5 ** Contact: Nokia Corporation (qt-info@nokia.com)
7 ** This file is part of the QtXmlPatterns module of the Qt Toolkit.
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11 ** This file contains pre-release code and may not be distributed.
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16 ** GNU Lesser General Public License Usage
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18 ** General Public License version 2.1 as published by the Free Software
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40 ****************************************************************************/
44 #include "qexceptiterator_p.h"
48 using namespace QPatternist;
50 ExceptIterator::ExceptIterator(const Item::Iterator::Ptr &it1,
51 const Item::Iterator::Ptr &it2) : m_it1(it1)
54 , m_node1(m_it1->next())
55 , m_node2(m_it2->next())
61 Item ExceptIterator::fromFirstOperand()
65 m_node1 = m_it1->next();
70 Item ExceptIterator::next()
81 return fromFirstOperand();
83 if(m_node1.asNode().model() != m_node2.asNode().model())
84 return fromFirstOperand();
86 switch(m_node1.asNode().compareOrder(m_node2.asNode()))
88 case QXmlNodeModelIndex::Precedes:
89 return fromFirstOperand();
90 case QXmlNodeModelIndex::Follows:
92 m_node2 = m_it2->next();
96 return fromFirstOperand();
100 m_node1 = m_it1->next();
101 m_node2 = m_it2->next();
107 Item ExceptIterator::current() const
112 xsInteger ExceptIterator::position() const
117 Item::Iterator::Ptr ExceptIterator::copy() const
119 return Item::Iterator::Ptr(new ExceptIterator(m_it1->copy(), m_it2->copy()));