[antlr-interest] Any tip...

[Clinton Roy]

Hi Lloyd,

On 7/11/07, Lloyd Dupont <ld at galador.net> wrote:
>
> I got this error message:
> ExpressionGrammar.g:270:1: The following token definitions are unreachable:
> MINUS,PLUS
>
> I'm trying with the ANTLR Work interpreter on the command additive:
> additive: multiple ((PLUS^ | MINUS^) multiple)* ;
>
> with input like 1+2
>
> and I get just the token one '1' followed by NoViableAltException
>
> any idea of what could be the source of the problem?

Do you have a whitespace token? are the tokens being filtered away
from the parser ($CHANNEL = hidden / skip()) ?

cheers,
-- 
Clinton Roy
CSIRO - Robotics Platform Engineer
Autonomous Systems Lab

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