Re: declaring C enum types

Antony Courtney <antony@apocalypse.org> wrote,

A relatively mundane question:

Is there a preferred means of writing a foreign import declaration for a C function with a prototype that takes an "enum" argument?

i.e., in C we have:

enum bar { GOOD, BAD };

void foo(enum bar x);

That's exactly the kind of scenario for which I have written C->Haskell: http://www.cse.unsw.edu.au/~chak/haskell/c2hs Using C->Haskell, you write into the binding module {#enum bar as Bar#} run it through the tool and get a Haskell data definition for `Bar', so that you can safely marshal between C's bar and Haskell's Bar. (See also the corresponding section in the manual <http://www.cse.unsw.edu.au/~chak/haskell/c2hs/docu/c2hs-3.html#ss3.5>.) Manuel