[antlr-interest] Possible bug in subrule invertion

Mike Lischke lists at lischke-online.de
Fri Apr 9 10:49:32 PDT 2004


Hi Ter, 

> If this is in the lexer, you cannot invert "rules" such as 
> LINE_FEED.  
> Done on purpose, I'm afraid. ;)

Aah, bad luck I guess. Right, this is in the lexer rules and I still think of such definitions as  macros :-)

> Ah.  Like a set intersection operator and such?

Exactly, this would be a great addition. I used that already when I learned my way through SableCC.

Thanks for listening.

Mike
--
www.soft-gems.net



 
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