{-# LANGUAGE FlexibleInstances, FlexibleContexts, TypeFamilies,
  MultiParamTypeClasses, OverlappingInstances, IncoherentInstances
  #-}
module HROOT.Graf.TArrow.Cast where
import Foreign.Ptr
import FFICXX.Runtime.Cast
import System.IO.Unsafe
import HROOT.Graf.TArrow.RawType
import HROOT.Graf.TArrow.Interface

instance (ITArrow a, FPtr a) => Castable (a) (Ptr RawTArrow) where
        cast :: forall r. a -> (Ptr RawTArrow -> IO r) -> IO r
cast a
x Ptr RawTArrow -> IO r
f = Ptr RawTArrow -> IO r
f (Ptr (Raw a) -> Ptr RawTArrow
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 RawTArrow -> (a -> IO r) -> IO r
uncast Ptr RawTArrow
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 RawTArrow -> Ptr (Raw a)
forall a b. Ptr a -> Ptr b
castPtr Ptr RawTArrow
x))

instance () => Castable (TArrow) (Ptr RawTArrow) where
        cast :: forall r. TArrow -> (Ptr RawTArrow -> IO r) -> IO r
cast TArrow
x Ptr RawTArrow -> IO r
f = Ptr RawTArrow -> IO r
f (Ptr RawTArrow -> Ptr RawTArrow
forall a b. Ptr a -> Ptr b
castPtr (TArrow -> Ptr (Raw TArrow)
forall a. FPtr a => a -> Ptr (Raw a)
get_fptr TArrow
x))
        uncast :: forall r. Ptr RawTArrow -> (TArrow -> IO r) -> IO r
uncast Ptr RawTArrow
x TArrow -> IO r
f = TArrow -> IO r
f (Ptr (Raw TArrow) -> TArrow
forall a. FPtr a => Ptr (Raw a) -> a
cast_fptr_to_obj (Ptr RawTArrow -> Ptr RawTArrow
forall a b. Ptr a -> Ptr b
castPtr Ptr RawTArrow
x))