[antlr-interest] wildcard in tree grammar
Gavin Lambert
antlr at mirality.co.nz
Tue Oct 21 00:26:49 PDT 2008
A few minutes ago, I wrote:
>certain possible input trees simply won't be able to
>be parsed any more (or at least not as nicely).
Well, ok, that's a bit too much of an exaggeration; after all,
this:
^('not' ^('and' c51=. c52=.))
with "." handling both cases (as I still maintain it should) could
be rendered like this if there were separate . and _ operators
(which I still dislike):
^('not' ^('and' c51=wild c52=wild))
wild : . | _ ;
But that seems really silly.
More information about the antlr-interest
mailing list