[antlr-interest] automatic tree grammar generation

[Terence Parr]

On May 19, 2008, at 4:49 PM, Kamal Verma wrote:

> Wonderful, when can we have it.
>
> Few months ago I had similar need and I almost thought of same  
> thing. It will be wonderful if have it as a command line option on  
> antlr. Like "-treeg <filename>". How about string templating the  
> 'AST' of 'antlr' grammar. ( inside the tool )
>
> It will also help with understanding of generated AST and debug and  
> develop the grammar.
>
> I will love to hear Terence thoughts on this.

Not always easy for -> rewrites even when they use $a vars.

a : (b->b) ('+' x=b -> ^('+' $a $x) )* ;

not sure how i'd figure that out off top of my head.

A basic "get me started" kind of thing would be pretty easy I guess. :)

Ter