{-# LANGUAGE FlexibleInstances, FlexibleContexts, TypeFamilies, MultiParamTypeClasses, OverlappingInstances, IncoherentInstances #-} module HROOT.Core.TClass.Cast where import Foreign.Ptr import FFICXX.Runtime.Cast import System.IO.Unsafe import HROOT.Core.TClass.RawType import HROOT.Core.TClass.Interface instance (ITClass a, FPtr a) => Castable (a) (Ptr RawTClass) where cast :: forall r. a -> (Ptr RawTClass -> IO r) -> IO r cast a x Ptr RawTClass -> IO r f = Ptr RawTClass -> IO r f (Ptr (Raw a) -> Ptr RawTClass forall a b. Ptr a -> Ptr b castPtr (a -> Ptr (Raw a) forall a. FPtr a => a -> Ptr (Raw a) get_fptr a x)) uncast :: forall r. Ptr RawTClass -> (a -> IO r) -> IO r uncast Ptr RawTClass x a -> IO r f = a -> IO r f (Ptr (Raw a) -> a forall a. FPtr a => Ptr (Raw a) -> a cast_fptr_to_obj (Ptr RawTClass -> Ptr (Raw a) forall a b. Ptr a -> Ptr b castPtr Ptr RawTClass x)) instance () => Castable (TClass) (Ptr RawTClass) where cast :: forall r. TClass -> (Ptr RawTClass -> IO r) -> IO r cast TClass x Ptr RawTClass -> IO r f = Ptr RawTClass -> IO r f (Ptr RawTClass -> Ptr RawTClass forall a b. Ptr a -> Ptr b castPtr (TClass -> Ptr (Raw TClass) forall a. FPtr a => a -> Ptr (Raw a) get_fptr TClass x)) uncast :: forall r. Ptr RawTClass -> (TClass -> IO r) -> IO r uncast Ptr RawTClass x TClass -> IO r f = TClass -> IO r f (Ptr (Raw TClass) -> TClass forall a. FPtr a => Ptr (Raw a) -> a cast_fptr_to_obj (Ptr RawTClass -> Ptr RawTClass forall a b. Ptr a -> Ptr b castPtr Ptr RawTClass x))