[antlr-interest] To AST or not to AST?

Andy Tripp antlr at jazillian.com
Tue Jun 19 15:02:41 PDT 2007


I'd say the general rule is to use actions in the parser for simple stuff.
If things start to get non-trivial where you're starting to do serious 
manipluation
of the AST, then have the parser produce the AST, and then transform the
AST in a separate step (with a treewalker).

Gevik Babakhani wrote:
> Hi,
>
> Regarding interpreting using AST. I was wondering in what situations it is
> practical to use AST and when to just interpret using actions in the
> parser?
>
> Thank you.
>
>
>   



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