{-# LANGUAGE ForeignFunctionInterface, TypeFamilies, MultiParamTypeClasses, 
             FlexibleInstances, TypeSynonymInstances, 
             EmptyDataDecls, ExistentialQuantification, ScopedTypeVariables #-}

-- module HROOT.Class.Interface where

module HROOT.Hist.TH3S.Interface where


import Data.Word
import Foreign.C
import Foreign.Ptr
import Foreign.ForeignPtr
import FFICXX.Runtime.Cast

import HROOT.Hist.TH3S.RawType

import HROOT.Hist.TH3.Interface
import HROOT.Core.TArrayS.Interface
---- ============ ----



class (ITH3 a,ITArrayS a) => ITH3S a where

instance Existable TH3S where
  data Exist TH3S = forall a. (FPtr a, ITH3S a) => ETH3S a

upcastTH3S :: (FPtr a, ITH3S a) => a -> TH3S
upcastTH3S h = let fh = get_fptr h
                   fh2 :: ForeignPtr RawTH3S = castForeignPtr fh
               in cast_fptr_to_obj fh2

downcastTH3S :: (FPtr a, ITH3S a) => TH3S -> a 
downcastTH3S h = let fh = get_fptr h
                     fh2 = castForeignPtr fh
                 in cast_fptr_to_obj fh2