[antlr-interest] Matching Last Line in ANTLR?

[David-Sarah Hopwood]

consiliens at gmail.com wrote:
> The last line, b., doesn't match the MC_INCORRECT token because there's 
> no newline after it. Is there an easy way to match this in ANTLR?

Yes. I had the same problem when matching the end of a //-style comment,
and solved it like this:

fragment ENDOFLINE
  : NEWLINE
  | { input.LA(1) == EOF }?
  ;

(If this were a non-fragment rule, it would be a problem that it can
sometimes match no characters, but since it's a fragment, that's OK.)

-- 
David-Sarah Hopwood  ⚥  http://davidsarah.livejournal.com