{-# LANGUAGE EmptyDataDecls, ExistentialQuantification,
  FlexibleContexts, FlexibleInstances, ForeignFunctionInterface,
  MultiParamTypeClasses, ScopedTypeVariables, TypeFamilies,
  TypeSynonymInstances #-}
module OGDF.EdgeElement.Interface where
import Data.Word
import Data.Int
import Foreign.C
import Foreign.Ptr
import FFICXX.Runtime.Cast
import OGDF.EdgeElement.RawType
import STD.Deletable.Interface

class (IDeletable a) => IEdgeElement a where

upcastEdgeElement ::
                  forall a . (FPtr a, IEdgeElement a) => a -> EdgeElement
upcastEdgeElement h
  = let fh = get_fptr h
        fh2 :: Ptr RawEdgeElement = castPtr fh
      in cast_fptr_to_obj fh2

downcastEdgeElement ::
                    forall a . (FPtr a, IEdgeElement a) => EdgeElement -> a
downcastEdgeElement h
  = let fh = get_fptr h
        fh2 = castPtr fh
      in cast_fptr_to_obj fh2