[antlr-interest] newbie request for help

[Kenny Leung]

On Dec 5, 2008, at 3:30 AM, Gavin Lambert wrote:

> At 19:46 5/12/2008, Kenny Leung wrote:
> >One of the problems lies in parsing something like this:
> >
> >     {vids=^vids}
> >
> >which means a struct named "vids", which is composed of void *
> >(^v), int, double, and short.
> >
> >After the "{", I need to interpret vids as a single token, and
> >after the "=", I need to interpret the characters as separate
> >tokens.
>
> Nope, you don't :)  Just treat it as one bigger token at the lexer  
> level, and then split it up at the parser level when creating the  
> AST or output.  Much simpler.

That feels rather hacky and unsatisfying. I wanted to used antlr so I  
wouldn't feel hacky and unsatisfying. Anyway, I don't think that would  
work, since the left part is a normal C identifier, which would look  
something like

     ('a'..'z'|'A'..'Z'|'_')('a'..'z'|'A'..'Z'|'0'..'9'|'_')*;

and the right part is composed of characters in the set

     c, i, s, l, q, C, I, S, L, Q, f, d, B, v, *, @, #, : ?

Thanks!

-Kenny