Long live Qt!

1 files changed, 110 insertions, 0 deletions

diff --git a/src/xmlpatterns/iterators/qsubsequenceiterator.cpp b/src/xmlpatterns/iterators/qsubsequenceiterator.cpp
new file mode 100644
index 0000000..4d9ee96
--- /dev/null
+++ b/src/xmlpatterns/iterators/qsubsequenceiterator.cpp
@@ -0,0 +1,110 @@
+/****************************************************************************
+**
+** 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 "qxpathhelper_p.h"
+
+#include "qsubsequenceiterator_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+SubsequenceIterator::SubsequenceIterator(const Item::Iterator::Ptr &iterator,
+                                         const xsInteger start,
+                                         const xsInteger len)
+                                         : m_position(0),
+                                           m_it(iterator),
+                                           m_counter(start),
+                                           m_start(start),
+                                           m_len(len),
+                                           m_stop(m_start + m_len)
+{
+    Q_ASSERT(iterator);
+    Q_ASSERT(start >= 1);
+    Q_ASSERT(len == -1 || len >= 1);
+
+    /* Note, "The first item of a sequence is located at position 1, not position 0." */
+    for(xsInteger i = 1; i != m_start; ++i)
+        m_it->next();
+}
+
+Item SubsequenceIterator::next()
+{
+    if(m_position == -1)
+        return Item();
+
+    m_current = m_it->next();
+    ++m_position;
+
+    if(m_len == -1)
+    {
+        if(!m_current)
+            m_position = -1;
+
+        return m_current;
+    }
+
+    ++m_counter;
+
+    if(!(m_counter > m_stop) && m_current)
+        return m_current;
+
+    m_position = -1;
+    m_current.reset();
+    return Item();
+}
+
+Item SubsequenceIterator::current() const
+{
+    return m_current;
+}
+
+xsInteger SubsequenceIterator::position() const
+{
+    return m_position;
+}
+
+Item::Iterator::Ptr SubsequenceIterator::copy() const
+{
+    return Item::Iterator::Ptr(new SubsequenceIterator(m_it->copy(), m_start, m_len));
+}
+
+QT_END_NAMESPACE