[antlr-interest] Importing problems

Ron Hunter-Duvar ron.hunter-duvar at oracle.com
Wed Mar 31 16:57:34 PDT 2010


Luigi,

Are you trying to import your lexer grammar into your parser grammar? If 
so, I don't think that is correct. What you should do to have your 
parser grammar use the tokens defined by your lexer is to use the 
tokenVocab option, something like this:

grammar ManchesterOWLSyntax;
options {
  tokenVocab=ManchesterOWLSyntaxLexer;
}


Ron


Luigi Iannone wrote:
> Hi
>
> I have built a lexer grammar, and a combined one which should import it.
> The problem is that as soon as I try to import using the following code in my combined grammar
>
> grammar ManchesterOWLSyntax;
> import  ManchesterOWLSyntaxLexer ;
>
>   
> main:
> 	 IDENTIFIER  
> 	;
>
> I get the following error
>
> ANTLR Parser Generator 3.2 Sep 23, 2009 12:02:23.
> Using project classpath: Yes.
> Grammar: /Users/luigi/Documents/workspace/Parsers/src/ManchesterOWLSyntax.g
> error(163): /Parsers/src/ManchesterOWLSyntax.g:2:9: combined grammar ManchesterOWLSyntax and imported lexer grammar ManchesterOWLSyntaxLexer both generate ManchesterOWLSyntax_ManchesterOWLSyntaxLexer; import ignored
>  |---> import  ManchesterOWLSyntaxLexer ;
>
>
> I wonder what am I doing wrong. Any clue?
>
> Thanks,
>
> Luigi
>
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>   

-- 
Ron Hunter-Duvar | Software Developer V | 403-272-6580
Oracle Service Engineering
Gulf Canada Square 401 - 9th Avenue S.W., Calgary, AB, Canada T2P 3C5

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