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

-- module HROOT.Class.Interface where

module HROOT.Core.TArrayI.Interface where


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

import HROOT.Core.TArrayI.RawType

import HROOT.Core.TArray.Interface
---- ============ ----



class (ITArray a) => ITArrayI a where

instance Existable TArrayI where
  data Exist TArrayI = forall a. (FPtr a, ITArrayI a) => ETArrayI a

upcastTArrayI :: (FPtr a, ITArrayI a) => a -> TArrayI
upcastTArrayI h = let fh = get_fptr h
                      fh2 :: ForeignPtr RawTArrayI = castForeignPtr fh
                  in cast_fptr_to_obj fh2

downcastTArrayI :: (FPtr a, ITArrayI a) => TArrayI -> a 
downcastTArrayI h = let fh = get_fptr h
                        fh2 = castForeignPtr fh
                    in cast_fptr_to_obj fh2