[antlr-interest] Using extra channels

[Terence Parr]

On Mar 23, 2009, at 11:30 AM, Sam Barnett-Cormack wrote:

> Hi all,
>
> We all (generally) use the default and hidden channels. What if I  
> wanted
> there to be another channel which, usually, doesn't get used, but if I
> want to tune to it as well I won't get the actual whitespace? Say for
> tokens that you mostly won't be interested in, but may want to
> programmatically choose to be interested in.
>
> Can I literally just define a new constant, MYCHANNEL, that's an int  
> not
> of the same value as HIDDEN or whatever the default one is called, and
> use it as I would either of those?

Yep. channels are just ints.  Parser can tune in/out on any channel it  
ways.

Ter