[antlr-interest] Why BANG after rule id ?

[Ellery Newcomer]

On Tue, Oct 6, 2009 at 5:51 PM, Graham Wideman <gwlist at grahamwideman.com>wrote:

>
> Anyhow, it looks to me like a '!' in this position is recognized but
> ignored -- either a vestige of a no-longer active feature, or an
> anticipation of a future feature?
>
> -- Graham
>
>
In ANTLR v2, it turns off AST construction for the entire rule, which is
necessary if you're building the AST for that rule entirely by hand.
Guessing v3 is smart enough not to need it.
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