[antlr-interest] (V3) Heterogeneous ASTs

[Terence Parr]

On Aug 8, 2006, at 4:29 PM, Sean Walton wrote:

> I noticed that 2.7 supports heterogeneous trees.  The syntax for it  
> is not supported in 3.0 (yet?), but can I do the same thing by  
> doing a {this.setTreeAdaptor(specialAdaptor);} ?

Yep :) simply override the create method to make it build different  
type nodes based upon the tokenType coming in.

   Later, we will support more specific typing like 2.7 or something  
more impressive.  Emond Papegaaij is currently working on some very  
interesting ideas in this area. I'm assuming he will provide a public  
link to his report once it is completed.

Terence