[antlr-interest] Type Checker Implementation Question

[Mark Felzer]

Hey group!

I am planning to implement a type-checker, for an existing AST, I build 
with the ANTLR.
I am weighting the option of embedding symbol table generation and 
checking into the the parser / tree walker grammar V.S. creating a 
separate application that analyzes the AST generating a symbol table.

Any advise which way I should go? Which implementation would be easier 
and more intuitive?

Thank you,
-Mark