[antlr-interest] De-emphasizing tree grammars?
Terence Parr
parrt at cs.usfca.edu
Mon Dec 26 12:43:04 PST 2011
On Dec 26, 2011, at 12:01 PM, Jason Osgood wrote:
>> Sam Harwell has convinced me to include things like skip in setting channels in
>> the lexer with special syntax rather than actions? again we get retargeting.
>
> Some day I hope to understand what you just said. :)
Sorry. just meant we can do
WS : (' '|'\n')+ => skip ;
not
WS : (' '|'\n')+ {skip();} ;
or
WS : (' '|'\n')+ => channel(HIDDEN) ;
might not use =>. might be ->. @ doesn't stand out or does it?
WS : (' '|'\n')+ @ channel(HIDDEN) ;
Ter
PS yep, they are listeners not visitors.
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