[antlr-interest] Another update to Honey Badger
Peter Boughton
boughtonp at gmail.com
Tue Jan 24 10:03:45 PST 2012
Is there a definition of what the "more" action is for?
>From experimenting, it seems to merge the marked token with the next
token, but only if it is placed AFTER any "type" actions - placed
before it is just ignored. However, the merged token always takes the
type of the final token (without the more action), not the original
one.
What I personally would like "more" to do is to only merge tokens of
the same type (or perhaps to specify a whitelist of token types which
can be merged).
This would mean I can have a simplified catch-all rule that produces a
single token, like so:
EVERYTHING_ELSE : . -> more(EVERYTHING_ELSE);
At the moment, if I do a more on that rule I end up with tokens like
"abc " because the more doesn't stop until it reaches a rule without
more - so I get (in this example) appended whitespace and the wrong
type.
However, I don't know if that is the intended use of "more" or if
there's a different way to achieve what I'm after?
More information about the antlr-interest
mailing list