[antlr-interest] Re: Import vocabulary

[Mike Lischke]

> ANTLR only supports one import vocabulary per grammar, and 
> the last one should win--there is a string variable that is 
> set for the option.

Ah, thanks for the hint.

>  Supporting more than one import vocab could be done, but 
> that would require a scheme for numbering token types so that 
> they don't overlap.
>  Not a good idea--that would be error prone.

I could imagine a merge feature. Duplicate tokens are just ignored while all others are merged into one large
vocabulary. Not too error prone I think, because I explicitely want this behavior when I specify more than one import
vocabulary.

Mike
--
www.soft-gems.net



 
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