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

[Joel Reymont]

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

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