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

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

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