Maurício schrieb: >>> It's not usual, but it is allowed to have values of >>> structs passed between functions directly instead of >>> using pointers: (...) > >>> Would it be possible to allow that in Haskell FFI (...) > >> There are a couple problems with this. First, the storage layout for a >> given C struct may be radically different depending on the back end, > > When you say struct layout, do you mean the offset of diferent > fields? I don't think this would be a problem, as your sugestion > of hsc2hs is one of many solutions to that. I'm not sugesting > that peek and poke methods of Storage instances should be created > automatically, I understand this would not worth the effort. > > However, isn't just knowing the size and alignment enough to > write a generic struct handler that, by using the appropriate > calling convention, is going to work with any struct? If not, > I agree with you it's really not worth it (as we can use pointers > as Felipe sugested.
I tried that in http://hackage.haskell.org/package/storable-record/ _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
