--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/api/qpullbridge.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,232 @@
+/****************************************************************************
+**
+** Copyright (C) 2008 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 <QVariant>
+
+#include "qabstractxmlnodemodel_p.h"
+#include "qitemmappingiterator_p.h"
+#include "qitem_p.h"
+#include "qxmlname.h"
+#include "qxmlquery_p.h"
+
+#include "qpullbridge_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+/*!
+  \brief Bridges a QPatternist::SequenceIterator to QAbstractXmlPullProvider.
+  \class QPatternist::PullBridge
+  \internal
+  \reentrant
+  \ingroup xml-tools
+
+  The approach of this class is rather straight forward since QPatternist::SequenceIterator
+  and QAbstractXmlPullProvider are conceptually similar. While QPatternist::SequenceIterator only
+  delivers top level items(since it's not an event stream, it's a list of items), PullBridge
+  needs to recursively iterate the children of nodes too, which is achieved through the
+  stack m_iterators.
+ */
+
+AbstractXmlPullProvider::Event PullBridge::next()
+{
+    m_index = m_iterators.top().second->next();
+
+    if(!m_index.isNull())
+    {
+        Item item(m_index);
+
+        if(item && item.isAtomicValue())
+            m_current = AtomicValue;
+        else
+        {
+            Q_ASSERT(item.isNode());
+
+            switch(m_index.kind())
+            {
+                case QXmlNodeModelIndex::Attribute:
+                {
+                    m_current = Attribute;
+                    break;
+                }
+                case QXmlNodeModelIndex::Comment:
+                {
+                    m_current = Comment;
+                    break;
+                }
+                case QXmlNodeModelIndex::Element:
+                {
+                    m_iterators.push(qMakePair(StartElement, m_index.iterate(QXmlNodeModelIndex::AxisChild)));
+                    m_current = StartElement;
+                    break;
+                }
+                case QXmlNodeModelIndex::Document:
+                {
+                    m_iterators.push(qMakePair(StartDocument, m_index.iterate(QXmlNodeModelIndex::AxisChild)));
+                    m_current = StartDocument;
+                    break;
+                }
+                case QXmlNodeModelIndex::Namespace:
+                {
+                    m_current = Namespace;
+                    break;
+                }
+                case QXmlNodeModelIndex::ProcessingInstruction:
+                {
+                    m_current = ProcessingInstruction;
+                    break;
+                }
+                case QXmlNodeModelIndex::Text:
+                {
+                    m_current = Text;
+                    break;
+                }
+            }
+        }
+    }
+    else
+    {
+        if(m_iterators.isEmpty())
+            m_current = EndOfInput;
+        else
+        {
+            switch(m_iterators.top().first)
+            {
+                case StartOfInput:
+                {
+                    m_current = EndOfInput;
+                    break;
+                }
+                case StartElement:
+                {
+                    m_current = EndElement;
+                    m_iterators.pop();
+                    break;
+                }
+                case StartDocument:
+                {
+                    m_current = EndDocument;
+                    m_iterators.pop();
+                    break;
+                }
+                default:
+                {
+                    Q_ASSERT_X(false, Q_FUNC_INFO,
+                               "Invalid value.");
+                    m_current = EndOfInput;
+                }
+            }
+        }
+
+    }
+
+    return m_current;
+}
+
+AbstractXmlPullProvider::Event PullBridge::current() const
+{
+    return m_current;
+}
+
+QXmlNodeModelIndex PullBridge::index() const
+{
+    return m_index;
+}
+
+QSourceLocation PullBridge::sourceLocation() const
+{
+    return m_index.model()->sourceLocation(m_index);
+}
+
+QXmlName PullBridge::name() const
+{
+    return m_index.name();
+}
+
+QVariant PullBridge::atomicValue() const
+{
+    return QVariant();
+}
+
+QString PullBridge::stringValue() const
+{
+    return QString();
+}
+
+QHash<QXmlName, QString> PullBridge::attributes()
+{
+    Q_ASSERT(m_current == StartElement);
+
+    QHash<QXmlName, QString> attributes;
+
+    QXmlNodeModelIndex::Iterator::Ptr it = m_index.iterate(QXmlNodeModelIndex::AxisAttribute);
+    QXmlNodeModelIndex index = it->next();
+    while (!index.isNull()) {
+        const Item attribute(index);
+        attributes.insert(index.name(), index.stringValue());
+
+        index = it->next();
+    }
+
+    return attributes;
+}
+
+QHash<QXmlName, QXmlItem> PullBridge::attributeItems()
+{
+    Q_ASSERT(m_current == StartElement);
+
+    QHash<QXmlName, QXmlItem> attributes;
+
+    QXmlNodeModelIndex::Iterator::Ptr it = m_index.iterate(QXmlNodeModelIndex::AxisAttribute);
+    QXmlNodeModelIndex index = it->next();
+    while (!index.isNull()) {
+        const Item attribute(index);
+        attributes.insert(index.name(), QXmlItem(index));
+
+        index = it->next();
+    }
+
+    return attributes;
+}
+
+QT_END_NAMESPACE
+