[antlr-interest] Lexer error?

[Monty Zukowski]

In the lexer common prefixes must be factored into the same rule.

Monty

On Aug 2, 2004, at 8:31 AM, Joan Pujol wrote:

> It's very strange.
> I don't know if I forget something but this doesn't work for me:
>
> class LexerAnalyzer extends Lexer;
>
> options {
> k=2;
> }
>
>
>
> OPMINOROREQUAL:"<=";
> ASSIGN:	":="|"<-";
>
> Antlr give me this error message:
>
> ANTLR Parser Generator   Version 2.7.4   1989-2004 jGuru.com
>  gramàtiques\lèxic.g: warning:lexical nondeterminism between rules
> OPMINOROREQUAL and ASSIGN upon
> gramàtiques\lèxic.g:     k==1:'<'
> gramàtiques\lèxic.g:     k==2:'='
>
>
> I have lookahead of two symbols, isn't it. I don't know because the
> Lexer has a nondeterminism.
>
> Cheers,
>
>
> -- 
> Joan Jesús Pujol Espinar
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>



 
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