HROOT-graf-0.10.0.1: src/HROOT/Graf/TGraphQQ/Cast.hs

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

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

instance () => Castable (TGraphQQ) (Ptr RawTGraphQQ) where
        cast x f = f (castPtr (get_fptr x))
        uncast x f = f (cast_fptr_to_obj (castPtr x))