Related to Karl's Template Haskell suggestion you could also have a look at quasiquotation:

http://www.haskell.org/haskellwiki/Quasiquotation

The GHC documentation has an example of a expression quoter:

http://www.haskell.org/ghc/docs/latest/html/users_guide/template-haskell.html#th-quasiquotation


On 23 June 2013 22:22, Karl Voelker <ktvoelker@gmail.com> wrote:
On Sun, Jun 23, 2013 at 6:36 AM, TP <paratribulations@free.fr> wrote:
In a more general way, let us suppose I have a Haskell library able to
perform some calculations: how to use it in a pre-processing step, before
compilation of the executable?

You are looking for Template Haskell.


I'm not sure how up-to-date the wiki is, but it should give you the general idea.

-Karl V.

_______________________________________________
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailman/listinfo/haskell-cafe