[antlr-interest] Fwd: Pruning the Parse Tree

Andy Tripp antlr at jazillian.com
Tue Mar 11 10:50:26 PDT 2008


Aaron Armstrong wrote:
>
> 2. The default AST is flat.  Basically, I get no more information than 
> what the lexer would give me.  (I don't know why this is, but ANTLR is 
> not my design).
>
I've always thought it was a bit odd that the default AST is flat. 
(Don't bother explaining the reasoning
to me, I've already heard the explanation, and I still think it's odd). 
At least an option to say
"make the AST match the parse tree" would be nice, as opposed to forcing 
me to sprinkle
"^" characters in my grammar.


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