HROOT-core-0.10.0.1: src/HROOT/Core/TVirtualPad/Cast.hs

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

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

instance () => Castable (TVirtualPad) (Ptr RawTVirtualPad) where
        cast x f = f (castPtr (get_fptr x))
        uncast x f = f (cast_fptr_to_obj (castPtr x))