diff -r 000000000000 -r 1918ee327afb src/xmlpatterns/expr/qexternalvariablereference.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/expr/qexternalvariablereference.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,88 @@
+/****************************************************************************
+**
+** 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 "qexternalvariablereference_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+ExternalVariableReference::ExternalVariableReference(const QXmlName &name,
+                                                     const SequenceType::Ptr &type) : m_name(name),
+                                                                                      m_seqType(type)
+{
+    Q_ASSERT(!m_name.isNull());
+    Q_ASSERT(m_seqType);
+}
+
+Item::Iterator::Ptr ExternalVariableReference::evaluateSequence(const DynamicContext::Ptr &context) const
+{
+    Q_ASSERT(context->externalVariableLoader());
+    return context->externalVariableLoader()->evaluateSequence(m_name, context);
+}
+
+Item ExternalVariableReference::evaluateSingleton(const DynamicContext::Ptr &context) const
+{
+    return context->externalVariableLoader()->evaluateSingleton(m_name, context);
+}
+
+bool ExternalVariableReference::evaluateEBV(const DynamicContext::Ptr &context) const
+{
+    return context->externalVariableLoader()->evaluateEBV(m_name, context);
+}
+
+SequenceType::Ptr ExternalVariableReference::staticType() const
+{
+    return m_seqType;
+}
+
+Expression::Properties ExternalVariableReference::properties() const
+{
+    return DisableElimination;
+}
+
+ExpressionVisitorResult::Ptr ExternalVariableReference::accept(const ExpressionVisitor::Ptr &visitor) const
+{
+    return visitor->visit(this);
+}
+
+QT_END_NAMESPACE