HROOT-hist-0.9: src/HROOT/Hist/TH2Poly/Cast.hs

{-# LANGUAGE FlexibleInstances, FlexibleContexts, TypeFamilies,
  MultiParamTypeClasses, OverlappingInstances, IncoherentInstances
  #-}
module HROOT.Hist.TH2Poly.Cast where
import Foreign.Ptr
import FFICXX.Runtime.Cast
import System.IO.Unsafe
import HROOT.Hist.TH2Poly.RawType
import HROOT.Hist.TH2Poly.Interface

instance (ITH2Poly a, FPtr a) => Castable a (Ptr RawTH2Poly) where
        cast x f = f (castPtr (get_fptr x))
        uncast x f = f (cast_fptr_to_obj (castPtr x))

instance Castable TH2Poly (Ptr RawTH2Poly) where
        cast x f = f (castPtr (get_fptr x))
        uncast x f = f (cast_fptr_to_obj (castPtr x))