[antlr-interest] Why won't this match...

[Mark Volkmann]

On Sun, Feb 24, 2008 at 6:02 PM, Terence Parr <parrt at cs.usfca.edu> wrote:
>
>  On Feb 24, 2008, at 3:27 PM, Mark Volkmann wrote:
>
>  try
>
>  >>>> LITTLE_TOKEN     : {input.LA(3)!='b'}?=> 'wi';

I don't think that can be right because we want to use LITTLE_TOKEN
even when the third character is 'b'. The criteria for choosing
BIG_TOKEN instead of LITTLE_TOKEN is that the eigth character of
'wibbled' is 'd'. If it doesn't match BIG_TOKEN then we want it to
match LITTLE_TOKEN followed by SEMI_TOKEN.

>  > I didn't see your post until after I sent my last post.
>  > Does that mean it isn't possible to do what Alan wants with the
>  > current lexer implementation or could the grammar be modified to do
>  > what he wants?

-- 
R. Mark Volkmann
Object Computing, Inc.