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

Indhu Bharathi indhu.b at s7software.com
Tue Mar 24 19:52:04 PDT 2009


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 $a can not be resolved.
>
> variableStatement
> : m= VAR? variableDeclaration ( COMMA variableDeclaration )* semic
> {tokens.replace($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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