[antlr-interest] Can TokenRewriteStream be applied to rules?

[Indhu Bharathi]

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 timethe error is :
> java.lang.NullPointerException.
>
> Did I do something wrong?
>
> Thanks,
>
>
> Annie
>
>
>
>
>
> > Date: Wed, 25 Mar 2009 08:22:04 +0530
> > From: indhu.b at s7software.com
> > To: yimm8369 at hotmail.com
> > CC: antlr-interest at antlr.org
> > 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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