diff -r 000000000000 -r 1918ee327afb src/xmlpatterns/expr/qoptimizationpasses_p.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/expr/qoptimizationpasses_p.h	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,143 @@
+/****************************************************************************
+**
+** 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  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_OptimizationBlocks_H
+#define Patternist_OptimizationBlocks_H
+
+#include "qatomiccomparator_p.h"
+#include "qexpression_p.h"
+#include "qoptimizerframework_p.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+namespace QPatternist
+{
+    /**
+     * @short Contains a set of common OptimizerPass instances.
+     *
+     * @author Frans englich <frans.englich@nokia.com>
+     * @ingroup Patternist_expressions
+     */
+    namespace OptimizationPasses
+    {
+        /**
+         * A list of OptimizerPass instances that performs the
+         * following rewrites:
+         *
+         * - <tt>count([expr]) ne 0</tt> into <tt>exists([expr])</tt>
+         * - <tt>count([expr]) != 0</tt> into <tt>exists([expr])</tt>
+         * - <tt>0 ne count([expr])</tt> into <tt>exists([expr])</tt>
+         * - <tt>0 != count([expr])</tt> into <tt>exists([expr])</tt>
+         * - <tt>count([expr]) eq 0</tt> into <tt>empty([expr])</tt>
+         * - <tt>count([expr]) = 0</tt> into <tt>empty([expr])</tt>
+         * - <tt>0 eq count([expr])</tt> into <tt>empty([expr])</tt>
+         * - <tt>0 = count([expr])</tt> into <tt>empty([expr])</tt>
+         * - <tt>count([expr]) ge 1</tt> into <tt>exists([expr])</tt>
+         * - <tt>count([expr]) >= 1</tt> into <tt>exists([expr])</tt>
+         */
+        extern OptimizationPass::List comparisonPasses;
+
+        /**
+         * A list of OptimizerPass instances that performs the
+         * following rewrites:
+         *
+         * - <tt>for $var in [expr] return $var</tt> into <tt>[expr]</tt>
+         */
+        extern OptimizationPass::List forPasses;
+
+        /**
+         * A list of OptimizerPass instances that performs the
+         * following rewrites:
+         *
+         * - <tt>if([expr of type xs:boolean]) then true() else false()</tt>
+         *   into <tt>[expr of type xs:boolean]</tt>
+         */
+        extern OptimizationPass::List ifThenPasses;
+
+        /**
+         * A list of OptimizerPass instances that performs the
+         * following rewrites:
+         *
+         * - <tt>fn:not(fn:exists([expr]))</tt> into <tt>fn:empty([expr])</tt>
+         * - <tt>fn:not(fn:empty([expr]))</tt> into <tt>fn:exists([expr])</tt>
+         */
+        extern OptimizationPass::List notFN;
+
+        /**
+         * Initializes the data members in the OptimizationPasses namespace.
+         *
+         * This class is not supposed to be instantiated, but to be used via its init()
+         * function. In fact, this class cannot be instantiated.
+         *
+         * @author Frans englich <frans.englich@nokia.com>
+         */
+        class Coordinator
+        {
+        public:
+            /**
+             * Initializes the members in the OptimizationPasses namespace.
+             */
+            static void init();
+
+        private:
+            Q_DISABLE_COPY(Coordinator)
+            inline Coordinator();
+        };
+    }
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif