#31: c2hs should derive and use default marshallers from enum and pointer hooks --------------------+------------------------------------------------------- Reporter: guest | Type: enhancement Status: new | Priority: normal Milestone: | Component: general Version: 0.16.0 | Keywords: --------------------+------------------------------------------------------- This is a FIXME in the source code, and I'm working on bindings that would really benefit from the DRY aspect of this feature. Specifically, c2hs should derive the following in/out marshallers: * `fromIntegral . fromEnum` and `toEnum . fromIntegral` from an enum hook * `id` and `id` from both naked and `newtype` pointer hooks * `withForeignPtr` and `newForeignPtr_` for `foreign` pointer hooks * `withPointerType` (the generated function) and `PointerType . newForeignPtr_` for `foreign newtype` pointer hooks. The out marshaller is not great here, a !ForeignPtr with no finalizers is not terribly useful concealed inside the newtype. Perhaps `foreign newtype` should be left naked, or furnished with an 'in' default marshaller only. Since I don't enjoy giving work to other people, I volunteer to add this functionality and submit a patch. This ticket is created for tracking purposes. -- Ticket URL: http://hackage.haskell.org/trac/c2hs/ticket/31 c2hs http://www.cse.unsw.edu.au/~chak/haskell/c2hs/ C->Haskell, An Interface Generator for Haskell