[antlr-interest] Building Treenodes from Kleene Closure

[shmuel siegel]

Dejas Ninethousand wrote:
> If I have the grammar:
>
>    
> expression_list
>     :
> expression (EXPRESSION_LIST_SEPARATOR expression)* -> EXPRESSION_LIST
> ;
>
> Is there anyway to build the AST such that /n 
> /EXPRESSION_LIST_SEPARATOR nodes actually appear the number of times 
> the separator appears in the input?  If so, how would I express that 
> on the right hand side of the arrow?
>
>
Am I not undertstanding your question? Will this do?

expression_list
    :
e+=expression (EXPRESSION_LIST_SEPARATOR e+=expression)* -> 
^(EXPRESSION_LIST $e+)
;