Flow Graphs for Language-independent Code Representation

Hi *^o^*,

I'm working on a source code transformation project for numerical automatic differentiation for Fortran and C.

I would love to know the best Haskell way/package available today to represent procedural (non-OO) code in a language-independent manner. Any tips or resource, paper references are most welcome!

Regards,
Cetin Sert

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