[antlr-interest] lexical nondeterminism between IDENT & LABEL

[John D. Mitchell]

>>>>> "thoth2487" == thoth2487  <thoth2487 at libero.it> writes:
[...]

> Hi to all, I've a very simple language in which there are IDENTifiers and
> jump LABELs. An IDENTifier start with ('a'...'z')|('A'..'Z') and continue
> with ('a'...'z')|('A'..'Z')|('0'..'9') and a LABEL is like an IDENTifier
> but ends with a ':'. When I try following .g I obtain always a lexical
> nondeterminsim which I isn't to solve:

Stop trying to do that in the lexer.  Let the lexer return the ID for both
and then have your parsing rules distinguish between ID ":" being a label
or the ID is just an ID.

Take care,
	John


 
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