diff -r 000000000000 -r 1918ee327afb src/xmlpatterns/environment/qstackcontextbase.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/environment/qstackcontextbase.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,153 @@
+/****************************************************************************
+**
+** 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/**
+ * @file
+ * @short This file is included by qstackcontextbase_p.h.
+ * If you need includes in this file, put them in qstackcontextbase_p.h, outside of the namespace.
+ */
+
+template<typename TSuperClass>
+StackContextBase<TSuperClass>::StackContextBase() : m_rangeVariables(10),
+                                                    m_expressionVariables(10),
+                                                    m_positionIterators(5),
+                                                    m_itemCacheCells(5),
+                                                    m_itemSequenceCacheCells(5)
+{
+    /* The m_* containers are initialized with default sizes. Estimated guesses on usage patterns. */
+}
+
+template<typename TSuperClass>
+StackContextBase<TSuperClass>::StackContextBase(const DynamicContext::Ptr &prevContext)
+                                                : TSuperClass(prevContext),
+                                                  m_rangeVariables(10),
+                                                  m_expressionVariables(10),
+                                                  m_positionIterators(5),
+                                                  m_itemCacheCells(5),
+                                                  m_itemSequenceCacheCells(5)
+{
+    Q_ASSERT(prevContext);
+}
+
+template<typename TSuperClass>
+ItemCacheCell &StackContextBase<TSuperClass>::itemCacheCell(const VariableSlotID slot)
+{
+    if(slot >= m_itemCacheCells.size())
+        m_itemCacheCells.resize(qMax(slot + 1, m_itemCacheCells.size()));
+
+    return m_itemCacheCells[slot];
+}
+
+template<typename TSuperClass>
+ItemSequenceCacheCell::Vector &StackContextBase<TSuperClass>::itemSequenceCacheCells(const VariableSlotID slot)
+{
+    if(slot >= m_itemSequenceCacheCells.size())
+        m_itemSequenceCacheCells.resize(qMax(slot + 1, m_itemSequenceCacheCells.size()));
+
+    return m_itemSequenceCacheCells;
+}
+
+template<typename TSuperClass>
+Item StackContextBase<TSuperClass>::rangeVariable(const VariableSlotID slot) const
+{
+    Q_ASSERT(slot < m_rangeVariables.size());
+    Q_ASSERT(m_rangeVariables.at(slot));
+    return m_rangeVariables.at(slot);
+}
+
+template<typename TSuperClass>
+Expression::Ptr StackContextBase<TSuperClass>::expressionVariable(const VariableSlotID slot) const
+{
+    Q_ASSERT(slot < m_expressionVariables.size());
+    Q_ASSERT(m_expressionVariables.at(slot));
+    return m_expressionVariables.at(slot);
+}
+
+template<typename TSuperClass>
+Item::Iterator::Ptr StackContextBase<TSuperClass>::positionIterator(const VariableSlotID slot) const
+{
+    Q_ASSERT(slot < m_positionIterators.size());
+    return m_positionIterators.at(slot);
+}
+
+template<typename TSuperClass>
+template<typename VectorType, typename UnitType>
+inline
+void StackContextBase<TSuperClass>::setSlotVariable(const VariableSlotID slot,
+                                                    const UnitType &newValue,
+                                                    VectorType &container) const
+{
+    if(slot < container.size())
+        container.replace(slot, newValue);
+    else
+    {
+        container.resize(slot + 1);
+        container.replace(slot, newValue);
+    }
+}
+
+template<typename TSuperClass>
+void StackContextBase<TSuperClass>::setRangeVariable(const VariableSlotID slot,
+                                                     const Item &newValue)
+{
+    setSlotVariable(slot, newValue, m_rangeVariables);
+}
+
+template<typename TSuperClass>
+void StackContextBase<TSuperClass>::setExpressionVariable(const VariableSlotID slot,
+                                                          const Expression::Ptr &newValue)
+{
+    setSlotVariable(slot, newValue, m_expressionVariables);
+}
+
+template<typename TSuperClass>
+void StackContextBase<TSuperClass>::setPositionIterator(const VariableSlotID slot,
+                                                        const Item::Iterator::Ptr &newValue)
+{
+    setSlotVariable(slot, newValue, m_positionIterators);
+}
+
+template<typename TSuperClass>
+DynamicContext::TemplateParameterHash &StackContextBase<TSuperClass>::templateParameterStore()
+{
+    return m_templateParameterStore;
+}
+