This software is part of the ast package.

Copyright (c) 1989-2011 AT&T Intellectual Property and is licensed under the
Eclipse Public License, Version 1.0 by AT&T Intellectual Property.

A copy of the License is available at:
http://www.eclipse.org/org/documents/epl-v10.html

Information and Software Systems Research,  AT&T Research,  Florham Park NJ