HROOT-hist-0.8: src/HROOT/Hist/TGraphBentErrors/Interface.hs

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

-- module HROOT.Class.Interface where

module HROOT.Hist.TGraphBentErrors.Interface where


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

import HROOT.Hist.TGraphBentErrors.RawType

import HROOT.Hist.TGraph.Interface
---- ============ ----



class (ITGraph a) => ITGraphBentErrors a where

instance Existable TGraphBentErrors where
  data Exist TGraphBentErrors = forall a. (FPtr a, ITGraphBentErrors a) => ETGraphBentErrors a

upcastTGraphBentErrors :: (FPtr a, ITGraphBentErrors a) => a -> TGraphBentErrors
upcastTGraphBentErrors h = let fh = get_fptr h
                               fh2 :: ForeignPtr RawTGraphBentErrors = castForeignPtr fh
                           in cast_fptr_to_obj fh2

downcastTGraphBentErrors :: (FPtr a, ITGraphBentErrors a) => TGraphBentErrors -> a 
downcastTGraphBentErrors h = let fh = get_fptr h
                                 fh2 = castForeignPtr fh
                             in cast_fptr_to_obj fh2