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diff --git a/Source/WebCore/xml/XPathPath.h b/Source/WebCore/xml/XPathPath.h
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+++ b/Source/WebCore/xml/XPathPath.h
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+/*
+ * Copyright (C) 2005 Frerich Raabe <raabe@kde.org>
+ * Copyright (C) 2006, 2009 Apple Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef XPathPath_h
+#define XPathPath_h
+
+#if ENABLE(XPATH)
+
+#include "XPathExpressionNode.h"
+#include "XPathNodeSet.h"
+
+namespace WebCore {
+
+    namespace XPath {
+
+        class Predicate;
+        class Step;
+
+        class Filter : public Expression {
+        public:
+            Filter(Expression*, const Vector<Predicate*>& = Vector<Predicate*>());
+            virtual ~Filter();
+
+            virtual Value evaluate() const;
+
+        private:
+            virtual Value::Type resultType() const { return Value::NodeSetValue; }
+
+            Expression* m_expr;
+            Vector<Predicate*> m_predicates;
+        };
+
+        class LocationPath : public Expression {
+        public:
+            LocationPath();
+            virtual ~LocationPath();
+            void setAbsolute(bool value) { m_absolute = value; setIsContextNodeSensitive(!m_absolute); }
+
+            virtual Value evaluate() const;
+            void evaluate(NodeSet& nodes) const; // nodes is an input/output parameter
+
+            void appendStep(Step* step);
+            void insertFirstStep(Step* step);
+
+        private:
+            virtual Value::Type resultType() const { return Value::NodeSetValue; }
+
+            Vector<Step*> m_steps;
+            bool m_absolute;
+        };
+
+        class Path : public Expression {
+        public:
+            Path(Filter*, LocationPath*);
+            virtual ~Path();
+
+            virtual Value evaluate() const;
+
+        private:
+            virtual Value::Type resultType() const { return Value::NodeSetValue; }
+
+            Filter* m_filter;
+            LocationPath* m_path;
+        };
+
+    }
+}
+
+#endif // ENABLE(XPATH)
+
+#endif // XPath_Path_H