[antlr-interest] Re: Import vocabulary
lgcraymer
lgc at mail1.jpl.nasa.gov
Sat Apr 24 16:05:31 PDT 2004
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.
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.
--Loring
--- In antlr-interest at yahoogroups.com, "Mike Lischke" <lists at l...> wrote:
> Hi,
>
> How is the import of a vocabulary supposed to work when I import
more than one? Currently it looks like the last one wins (i.e. tokens
from previously imported vocabularies are lost). I can put everything
into one vocabulary, sure, but for a clean implementation I prefer to
keep my preprocessor vocabulary (ifdef, define etc.) separate from the
main parser vocabulary.
>
> Mike
> --
> www.soft-gems.net
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