HROOT-hist-0.10.0.1: src/HROOT/Hist/TGraph2D/Cast.hs

{-# LANGUAGE FlexibleInstances, FlexibleContexts, TypeFamilies,
  MultiParamTypeClasses, OverlappingInstances, IncoherentInstances
  #-}
module HROOT.Hist.TGraph2D.Cast where
import Foreign.Ptr
import FFICXX.Runtime.Cast
import System.IO.Unsafe
import HROOT.Hist.TGraph2D.RawType
import HROOT.Hist.TGraph2D.Interface

instance (ITGraph2D a, FPtr a) => Castable (a) (Ptr RawTGraph2D)
         where
        cast x f = f (castPtr (get_fptr x))
        uncast x f = f (cast_fptr_to_obj (castPtr x))

instance () => Castable (TGraph2D) (Ptr RawTGraph2D) where
        cast x f = f (castPtr (get_fptr x))
        uncast x f = f (cast_fptr_to_obj (castPtr x))