source: trunk/src/xmlpatterns/iterators/qexceptiterator.cpp

Last change on this file was 846, checked in by Dmitry A. Kuminov, 14 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.

File size: 3.8 KB
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[2]1/****************************************************************************
2**
[846]3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
[561]4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
[2]6**
7** This file is part of the QtXmlPatterns module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
[561]24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
[2]27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
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[561]36** If you have questions regarding the use of this file, please contact
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[2]38** $QT_END_LICENSE$
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40****************************************************************************/
41
42#include "qitem_p.h"
43
44#include "qexceptiterator_p.h"
45
46QT_BEGIN_NAMESPACE
47
48using namespace QPatternist;
49
50ExceptIterator::ExceptIterator(const Item::Iterator::Ptr &it1,
51 const Item::Iterator::Ptr &it2) : m_it1(it1)
52 , m_it2(it2)
53 , m_position(0)
54 , m_node1(m_it1->next())
55 , m_node2(m_it2->next())
56{
57 Q_ASSERT(m_it1);
58 Q_ASSERT(m_it2);
59}
60
61Item ExceptIterator::fromFirstOperand()
62{
63 ++m_position;
64 m_current = m_node1;
65 m_node1 = m_it1->next();
66
67 return m_current;
68}
69
70Item ExceptIterator::next()
71{
72 while(true)
73 {
74 if(!m_node1)
75 {