UPGRADE OF THE JJOOS COMPILER The JJOOS was upgraded to use the SableCC3.0 compiler generator during the summer of 2003. The main change was in the JJOOS grammar which now has a set of rules which generate an Abstract Syntax Tree instead of a Concrete Syntax Tree which was the case with the previous version of SableCC. There were changes to other files as well and that has been reflected in the history at the top of each file. We now require only a single pass of the fixer. SableCC was updated to SableCC3.0 by Kevin Agbakpem at the University of Quebec at Montreal. Enjoy! September 14, 2004 Ahmer Ahmedani ahmer.ahmedani@mail.mcgill.ca Feng Qian fqian@cs.mcgill.ca