diff options
author | Lars Knoll <lars.knoll@nokia.com> | 2009-03-23 10:18:55 +0100 |
---|---|---|
committer | Simon Hausmann <simon.hausmann@nokia.com> | 2009-03-23 10:18:55 +0100 |
commit | e5fcad302d86d316390c6b0f62759a067313e8a9 (patch) | |
tree | c2afbf6f1066b6ce261f14341cf6d310e5595bc1 /src/xmlpatterns/iterators/qinsertioniterator.cpp | |
download | qt4-tools-e5fcad302d86d316390c6b0f62759a067313e8a9.tar.gz |
Long live Qt 4.5!
Diffstat (limited to 'src/xmlpatterns/iterators/qinsertioniterator.cpp')
-rw-r--r-- | src/xmlpatterns/iterators/qinsertioniterator.cpp | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/src/xmlpatterns/iterators/qinsertioniterator.cpp b/src/xmlpatterns/iterators/qinsertioniterator.cpp new file mode 100644 index 0000000000..7d4eb986be --- /dev/null +++ b/src/xmlpatterns/iterators/qinsertioniterator.cpp @@ -0,0 +1,128 @@ +/**************************************************************************** +** +** 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 "qinsertioniterator_p.h" + +QT_BEGIN_NAMESPACE + +using namespace QPatternist; + +InsertionIterator::InsertionIterator(const Item::Iterator::Ptr &target, + const xsInteger pos, + const Item::Iterator::Ptr &inserts) + : m_target(target), + m_insertPos(pos), + m_inserts(inserts), + m_position(0), + m_isInserting(pos == 1) +{ + Q_ASSERT(target); + Q_ASSERT(inserts); + Q_ASSERT(m_insertPos >= 1); +} + +Item InsertionIterator::next() +{ + if(m_isInserting) + { + m_current = m_inserts->next(); + + if(m_current) + { + ++m_position; + return m_current; + } + } + else if(m_position == (m_insertPos - 1) && !m_isInserting) + { /* Entered only the first time insertion starts. */ + m_isInserting = true; + return next(); + } + + ++m_position; + m_current = m_target->next(); + + if(m_current) + return m_current; + else if(m_inserts->position() == -1) /* We're at the end of the both iterators. */ + { + m_position = -1; + m_current.reset(); + return Item(); + } + + /* Insert the insertion iterator, since it's still left. */ + Q_ASSERT(m_target->position() < m_insertPos); + m_isInserting = true; + m_current = m_inserts->next(); + + if(m_current) + return m_current; + else + { + /* m_current is already null, so no need to reset it. */ + m_position = -1; + return Item(); + } +} + +xsInteger InsertionIterator::count() +{ + return m_target->count() + m_inserts->count(); +} + +Item InsertionIterator::current() const +{ + return m_current; +} + +xsInteger InsertionIterator::position() const +{ + return m_position; +} + +Item::Iterator::Ptr InsertionIterator::copy() const +{ + return Item::Iterator::Ptr(new InsertionIterator(m_target->copy(), m_insertPos, m_inserts->copy())); +} + +QT_END_NAMESPACE |