Sorry ,I forgot to mention, I corrected $m.end.
Now, I am using {tokens.replace($m.start, $m.stop, "something else");}
but I got java.lang.NullPointerException error.
It seems $m is null.
Annie
Date: Wed, 25 Mar 2009 08:40:46 +0530
From: [email protected]
To: [email protected]
CC: [email protected]
Subject: Re: [antlr-interest] Can TokenRewriteStream be applied to rules?
There was a typo in my mail. It is $m.stop and not $m.end. Sorry :-)
And here is the documentation:
http://www.antlr.org/api/Java/classorg_1_1antlr_1_1runtime_1_1_parser_rule_return_scope.html
:-)
YINGAnnie wrote:
Well, I tried it ,but this time the error is : java.lang.NullPointerException.
Did I do something wrong?
Thanks,
Annie
> Date: Wed, 25 Mar 2009 08:22:04 +0530
> From: [email protected]
> To: [email protected]
> CC: [email protected]
> Subject: Re: [antlr-interest] Can TokenRewriteStream be applied to rules?
>
> This will work:
>
> variableStatement
> : VAR? variableDeclaration ( COMMA m=variableDeclaration )* semic
> {tokens.replace($m.start, $m.end, "something else");} &n bsp;
> ;
>
> $m will be of type variableDeclaration_return which will be subclass of
> 'ParserRuleReturnScope'. $m is not Token.
>
>
> - Indhu
>
>
> YINGAnnie wrote:
> > Hi again,
> >
> > TokenRewriteStream can only replace the declared token, not the rule.
> > right?
> >
> > for example,If I want to replace VAR, it works fine, But if I want to
> > replace variableDeclaration , the error said $a can no t be resolved.
> >
> > variableStatement
> > : m= VAR? variableDeclaration ( COMMA variableDeclaration )* semic
> > {tokens.replace($m, "something else");}
> > ;
> >
> >
> > variableStatement
> > : VAR? variableDeclaration ( COMMA m=variableDeclaration )* semic
> > {tokens.replace($m, "something else");} &n bsp;
> > ;
> >
> > So how can I replace variableDeclaration ?
> >
> > Thanks in advance.
> >
> > Annie
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