[Haskell-cafe] Is Template Haskell a suitable macro language?

I'm finding myself dealing with several large abstract syntax trees that are very similar in nature. The constructor names would be the same or one type may be a small extension of another. This is something that I wouldn't worry about with Lisp, for example, as I would create a bunch of macros for creating syntax trees and reuse them all over. I cannot do this in Haskell, though, as my "macros" are functions and so I must repeat them for every AST since they return different types. I'm wondering if Template Haskell is a suitable replacement for Lisp macros. What is the consensus? Thanks, Joel -- http://wagerlabs.com/