On Fri, Feb 6, 2015 at 7:55 AM, Neal Becker <ndbeck...@gmail.com> wrote: > Trying out pypeg2. The below grammar is recursive. A 'Gen' is an ident > followed by parenthesized args. args is a csl of alphanum or Gen. > > The tests 'p' and 'p2' are fine, but 'p3' fails > SyntaxError: expecting u')' > > > from __future__ import unicode_literals, print_function > from pypeg2 import * > > ident = re.compile (r'[a-z]+') > alphanum = re.compile (r'[a-z0-9]+') > num = re.compile (r'[0-9]+') > > class args (List): > grammar = maybe_some ( csl ([alphanum, Gen]))
I'm not familiar with pypeg2, but should this use optional instead of maybe_some? The csl function already produces a list, so the result of maybe_some on that would be one or more consecutive lists. Also, it looks from the docs like it should just be "csi(alphanum, Gen)" (no list in the arguments). -- https://mail.python.org/mailman/listinfo/python-list
