[antlr-interest] Possible bug in subrule invertion

Tom Zagotta tzagotta1 at sienasystems.com
Fri Apr 9 10:39:14 PDT 2004


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

In this case, LINE_FEED would be best defined as a macro, which
unfortunately is not supported by ANTLR.  Macros (or something functionally
equivalent or better) would be a nice addition for helping to build up
lexers from smaller parts.

Regards,

- Tom



 
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