Hi Donn,
Do you know c2hs and GreenCard?
I don't know the details of them.
http://blog.ezyang.com/2010/06/the-haskell-preprocessor-hierarchy/
On Tue, Jan 21, 2014 at 1:27 AM, Donn Cave
That suggests to me that you should change the class, so that its Storable instance doesn't need to dereference the pointers - that is, vtbl for example would be a Ptr type. Though that would not save you very much trouble in the present case.
Yes. I will try to write the own Ptr type and Storable class. Thank's.
Are you using hsc2hs? Your example has a few things like "plusPtr p offsetOf_Ac97CodecIf_vtbl" - where do you get that offsetOf_? hsc2hs has a #peek macro that does this:
p_Ac97CodecIf_vtbl p = (#peek struct ac97codecxzy, vtbl) p -- creates Haskell code p_Ac97CodecIf_vtbl p = ((\ hsc_ptr -> peekByteOff hsc_ptr 96) p
Yes, I know it. I read Read World Haskell book. But there are two problems. First, jhc has own Foreign Primitives. http://ajhc.metasepi.org/manual.html#foreign-primitives The "const. C_CONSTANT" can embed a C expression in Haskell code. It understands C's macros (#define). Very powerful. Second, The hsc2hs is not good for cross compiling. If I miss to choose "--cc" option, I will watch funny BUG... Thank's, -- Kiwamu Okabe