[antlr-interest] tree transformation question (if-elif-else -> if-else)

[Klaas Hofstra]

On Friday 01 July 2005 17:52, Bryan Ewbank wrote:
> I use a recursive grammar instead, drilling into the elif_s production
> to build the tree.  It produces the tree you want, and recognizes the
> same language (if I wrote it correctly):
>
>   if_s   : "if"^ expr statements ( elif_s )? ;
>   elif_s : "elif"^ expr statements ( elif_s | else_s )? ;
>   else_s : "else"^ statement ;

The recursive grammar did the trick, thanks!

Klaas