Ops yes is BNF :P Bacus Normal Form if I am not wrong... However......
I'am tryng to recognizing patterns in a bytecoded file in orderd to optimize... But I would like to "parse" i.e reconstruct it in something like a tree.. in order to apply rules on a tree recursively. I have seen compile.c in the Python dist... -- http://mail.python.org/mailman/listinfo/python-list