--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/acceltree/qacceliterators.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,181 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtDebug>
+
+#include "qacceliterators_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+xsInteger AccelIterator::position() const
+{
+    return m_position;
+}
+
+QXmlNodeModelIndex AccelIterator::current() const
+{
+    return m_current;
+}
+
+QXmlNodeModelIndex FollowingIterator::next()
+{
+    /* "the following axis contains all nodes that are descendants
+     *  of the root of the tree in which the context node is found,
+     *  are not descendants of the context node, and occur after
+     *  the context node in document order." */
+
+    if(m_position == 0)
+    {
+        /* Skip the descendants. */
+        m_currentPre += m_document->size(m_preNumber) + 1;
+    }
+
+    if(m_currentPre > m_document->maximumPreNumber())
+        return closedExit();
+
+    while(m_document->kind(m_currentPre) == QXmlNodeModelIndex::Attribute)
+    {
+        ++m_currentPre;
+        if(m_currentPre > m_document->maximumPreNumber())
+            return closedExit();
+    }
+
+    m_current = m_document->createIndex(m_currentPre);
+    ++m_position;
+    ++m_currentPre;
+    return m_current;
+}
+
+QXmlNodeModelIndex PrecedingIterator::next()
+{
+    if(m_currentPre == -1)
+        return closedExit();
+
+    /* We skip ancestors and attributes and take into account that they can be intermixed. If one
+     * skips them in two separate loops, one can end up with skipping all the attributes to then
+     * be positioned at an ancestor(which will be accepted because the ancestor loop was before the
+     * attributes loop).  */
+    while(m_document->kind(m_currentPre) == QXmlNodeModelIndex::Attribute ||
+          m_document->postNumber(m_currentPre) > m_postNumber)
+    {
+        --m_currentPre;
+        if(m_currentPre == -1)
+            return closedExit();
+    }
+
+    if(m_currentPre == -1)
+    {
+        m_currentPre = -1;
+        return closedExit();
+    }
+
+    /* Phew, m_currentPre is now 1) not an ancestor; and
+     * 2) not an attribute; and 3) preceds the context node. */
+
+    m_current = m_document->createIndex(m_currentPre);
+    ++m_position;
+    --m_currentPre;
+
+    return m_current;
+}
+
+QXmlNodeModelIndex::Iterator::Ptr PrecedingIterator::copy() const
+{
+    return QXmlNodeModelIndex::Iterator::Ptr(new PrecedingIterator(m_document, m_preNumber));
+}
+
+QXmlNodeModelIndex::Iterator::Ptr FollowingIterator::copy() const
+{
+    return QXmlNodeModelIndex::Iterator::Ptr(new FollowingIterator(m_document, m_preNumber));
+}
+
+QXmlNodeModelIndex ChildIterator::next()
+{
+    if(m_currentPre == -1)
+        return closedExit();
+
+    ++m_position;
+    m_current = m_document->createIndex(m_currentPre);
+
+    /* We get the count of the descendants, and increment m_currentPre. After
+     * this, m_currentPre is the node after the descendants. */
+    m_currentPre += m_document->size(m_currentPre);
+    ++m_currentPre;
+
+    if(m_currentPre > m_document->maximumPreNumber() || m_document->depth(m_currentPre) != m_depth)
+        m_currentPre = -1;
+
+    return m_current;
+}
+
+QXmlNodeModelIndex::Iterator::Ptr ChildIterator::copy() const
+{
+    return QXmlNodeModelIndex::Iterator::Ptr(new ChildIterator(m_document, m_preNumber));
+}
+
+QXmlNodeModelIndex AttributeIterator::next()
+{
+    if(m_currentPre == -1)
+        return closedExit();
+    else
+    {
+        m_current = m_document->createIndex(m_currentPre);
+        ++m_position;
+
+        ++m_currentPre;
+
+        if(m_currentPre > m_document->maximumPreNumber() ||
+           m_document->kind(m_currentPre) != QXmlNodeModelIndex::Attribute)
+            m_currentPre = -1;
+
+        return m_current;
+    }
+}
+
+QXmlNodeModelIndex::Iterator::Ptr AttributeIterator::copy() const
+{
+    return QXmlNodeModelIndex::Iterator::Ptr(new AttributeIterator(m_document, m_preNumber));
+}
+
+QT_END_NAMESPACE
+