diff -r 000000000000 -r 1918ee327afb src/xmlpatterns/schema/qnamespacesupport_p.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/schema/qnamespacesupport_p.h	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,173 @@
+/****************************************************************************
+**
+** 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+
+#ifndef Patternist_NamespaceSupport_H
+#define Patternist_NamespaceSupport_H
+
+#include "qnamepool_p.h"
+
+#include <QtCore/QExplicitlySharedDataPointer>
+#include <QtCore/QHash>
+#include <QtCore/QSet>
+#include <QtCore/QStack>
+#include <QtCore/QXmlStreamNamespaceDeclarations>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+namespace QPatternist
+{
+    /**
+     * @short A helper class for handling nested namespace declarations.
+     *
+     * This class is mostly an adaption of QXmlNamespaceSupport to the NamePool
+     * mechanism used in XmlPatterns.
+     *
+     * @ingroup Patternist_schema
+     * @author Tobias Koenig <tobias.koenig@nokia.com>
+     */
+    class NamespaceSupport
+    {
+        public:
+            /**
+             * Describes whether the name to process is an attribute or element.
+             */
+            enum NameType
+            {
+                AttributeName,  ///< An attribute name to process.
+                ElementName     ///< An element name to process.
+            };
+
+            /**
+             * Creates an empty namespace support object.
+             */
+            NamespaceSupport();
+
+            /**
+             * Creates a new namespace support object.
+             *
+             * @param namePool The name pool where all processed names are stored in.
+             */
+            NamespaceSupport(const NamePool::Ptr &namePool);
+
+            /**
+             * Adds a new prefix-to-namespace binding.
+             *
+             * @param prefixCode The name pool code for the prefix.
+             * @param namespaceCode The name pool code for the namespace.
+             */
+            void setPrefix(const QXmlName::PrefixCode prefixCode, const QXmlName::NamespaceCode namespaceCode);
+
+            /**
+             * Adds the prefix-to-namespace bindings from @p declarations to
+             * the namespace support.
+             */
+            void setPrefixes(const QXmlStreamNamespaceDeclarations &declarations);
+
+            /**
+             * Sets the name pool code of the target namespace of the schema the
+             * namespace support works on.
+             */
+            void setTargetNamespace(const QXmlName::NamespaceCode code);
+
+            /**
+             * Returns the prefix code for the given namespace @p code.
+             */
+            QXmlName::PrefixCode prefix(const QXmlName::NamespaceCode code) const;
+
+            /**
+             * Returns the namespace code for the given prefix @p code.
+             */
+            QXmlName::NamespaceCode uri(const QXmlName::PrefixCode code) const;
+
+            /**
+             * Converts the given @p qualifiedName to a resolved QXmlName @p name according
+             * to the current namespace mapping.
+             *
+             * @param qualifiedName The full qualified name.
+             * @param type The type of name processing.
+             * @param name The resolved QXmlName.
+             *
+             * @returns @c true if the name could be processed correctly or @c false if the
+             *          namespace prefix is unknown.
+             */
+            bool processName(const QString &qualifiedName, NameType type, QXmlName &name) const;
+
+            /**
+             * Pushes the current namespace mapping onto the stack.
+             */
+            void pushContext();
+
+            /**
+             * Pops the current namespace mapping from the stack.
+             */
+            void popContext();
+
+            /**
+             * Returns the list of namespace bindings.
+             */
+            QList<QXmlName> namespaceBindings() const;
+
+        private:
+            typedef QHash<QXmlName::PrefixCode, QXmlName::NamespaceCode> NamespaceHash;
+
+            NamePool::Ptr         m_namePool;
+            QStack<NamespaceHash> m_nsStack;
+            NamespaceHash         m_ns;
+    };
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif