[antlr-interest] preserving epsilon derivations when building trees

[Mark Snyder]

Thanks, I had thought of this; however,
this robs me of convenient *,+,? operators
and thereby explodes my grammar ;-(.

On Nov 12, 2007 5:21 PM, Michael LeBlanc <Mike at leblanc-engineering.com>
wrote:

> Replace, for example, 'static'? by
>
>   staticOrEmpty : 'static' | -> EMPTY ;
>
> Add EMPTY to your tokens {}.
>
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