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diff --git a/impl/antlr/libantlr3c-3.4/include/antlr3treeparser.h b/impl/antlr/libantlr3c-3.4/include/antlr3treeparser.h
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+#ifndef	ANTLR3TREEPARSER_H
+#define	ANTLR3TREEPARSER_H
+
+// [The "BSD licence"]
+// Copyright (c) 2005-2009 Jim Idle, Temporal Wave LLC
+// http://www.temporal-wave.com
+// http://www.linkedin.com/in/jimidle
+//
+// All rights reserved.
+//
+// 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.
+// 3. The name of the author may not be used to endorse or promote products
+//    derived from this software without specific prior written permission.
+//
+// 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.
+
+#include    <antlr3defs.h>
+#include    <antlr3baserecognizer.h>
+#include    <antlr3commontreenodestream.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Internal structure representing an element in a hash bucket.
+ *  Stores the original key so that duplicate keys can be rejected
+ *  if necessary, and contains function can be supported If the hash key
+ *  could be unique I would have invented the perfect compression algorithm ;-)
+ */
+typedef	struct	ANTLR3_TREE_PARSER_struct
+{
+    /** Pointer to any super class
+     */
+    void    * super;
+
+    /** A pointer to the base recognizer, where most of the parser functions actually
+     *  live because they are shared between parser and tree parser and this is the
+     *  easier way than copying the interface all over the place. Macros hide this
+     *  for the generated code so it is easier on the eye (though not the debugger ;-).
+     */
+    pANTLR3_BASE_RECOGNIZER		rec;
+
+    /** Pointer to the common tree node stream for the parser
+     */
+    pANTLR3_COMMON_TREE_NODE_STREAM	ctnstream;
+
+    /** Set the input stream and reset the parser
+     */
+    void			    (*setTreeNodeStream)    (struct ANTLR3_TREE_PARSER_struct * parser, pANTLR3_COMMON_TREE_NODE_STREAM input);
+
+    /** Return a pointer to the input stream
+     */
+    pANTLR3_COMMON_TREE_NODE_STREAM (*getTreeNodeStream)    (struct ANTLR3_TREE_PARSER_struct * parser);
+    
+    /** Pointer to a function that knows how to free resources of an ANTLR3 tree parser.
+     */
+    void			    (*free)		    (struct ANTLR3_TREE_PARSER_struct * parser);
+}
+    ANTLR3_TREE_PARSER;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif