HROOT-core-0.8: src/HROOT/Core/TArrayL/Interface.hs

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

-- module HROOT.Class.Interface where

module HROOT.Core.TArrayL.Interface where


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

import HROOT.Core.TArrayL.RawType

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



class (ITArray a) => ITArrayL a where

instance Existable TArrayL where
  data Exist TArrayL = forall a. (FPtr a, ITArrayL a) => ETArrayL a

upcastTArrayL :: (FPtr a, ITArrayL a) => a -> TArrayL
upcastTArrayL h = let fh = get_fptr h
                      fh2 :: ForeignPtr RawTArrayL = castForeignPtr fh
                  in cast_fptr_to_obj fh2

downcastTArrayL :: (FPtr a, ITArrayL a) => TArrayL -> a 
downcastTArrayL h = let fh = get_fptr h
                        fh2 = castForeignPtr fh
                    in cast_fptr_to_obj fh2