Changes by: Jason Hickey (jyh at cs.caltech.edu)
Date: 2003-06-30 11:15:39 -0700 (Mon, 30 Jun 2003)
Revision: 4690
Log message:
Initial implementation of pattern matching.
This uses a new parameter type "match_param", which
gives a simplified representation of parameters that
requires no "when" clauses during pattern matching.