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Diffstat (limited to 'src/xmlpatterns/iterators/qremovaliterator.cpp')
-rw-r--r-- | src/xmlpatterns/iterators/qremovaliterator.cpp | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/src/xmlpatterns/iterators/qremovaliterator.cpp b/src/xmlpatterns/iterators/qremovaliterator.cpp new file mode 100644 index 0000000..eb27ce7 --- /dev/null +++ b/src/xmlpatterns/iterators/qremovaliterator.cpp @@ -0,0 +1,109 @@ +/**************************************************************************** +** +** 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 "qremovaliterator_p.h" + +QT_BEGIN_NAMESPACE + +using namespace QPatternist; + +RemovalIterator::RemovalIterator(const Item::Iterator::Ptr &target, + const xsInteger pos) : m_target(target), + m_removalPos(pos), + m_position(0) +{ + Q_ASSERT(target); + Q_ASSERT(pos >= 1); +} + +Item RemovalIterator::next() +{ + if(m_position == -1) + return Item(); + + m_current = m_target->next(); + + if(!m_current) + { + m_position = -1; + m_current.reset(); + return Item(); + } + + ++m_position; + + if(m_position == m_removalPos) + { + next(); /* Recurse, return the next item. */ + --m_position; /* Don't count the one we removed. */ + return m_current; + } + + return m_current; +} + +xsInteger RemovalIterator::count() +{ + const xsInteger itc = m_target->count(); + + if(itc < m_removalPos) + return itc; + else + return itc - 1; +} + +Item RemovalIterator::current() const +{ + return m_current; +} + +xsInteger RemovalIterator::position() const +{ + return m_position; +} + +Item::Iterator::Ptr RemovalIterator::copy() const +{ + return Item::Iterator::Ptr(new RemovalIterator(m_target->copy(), m_removalPos)); +} + +QT_END_NAMESPACE |