{-# LANGUAGE FlexibleInstances, FlexibleContexts, TypeFamilies, MultiParamTypeClasses, OverlappingInstances, IncoherentInstances #-} module HROOT.Graf.TCanvas.Cast where import Foreign.Ptr import FFICXX.Runtime.Cast import System.IO.Unsafe import HROOT.Graf.TCanvas.RawType import HROOT.Graf.TCanvas.Interface instance (ITCanvas a, FPtr a) => Castable (a) (Ptr RawTCanvas) where cast :: forall r. a -> (Ptr RawTCanvas -> IO r) -> IO r cast a x Ptr RawTCanvas -> IO r f = Ptr RawTCanvas -> IO r f (Ptr (Raw a) -> Ptr RawTCanvas forall a b. Ptr a -> Ptr b castPtr (a -> Ptr (Raw a) forall a. FPtr a => a -> Ptr (Raw a) get_fptr a x)) uncast :: forall r. Ptr RawTCanvas -> (a -> IO r) -> IO r uncast Ptr RawTCanvas x a -> IO r f = a -> IO r f (Ptr (Raw a) -> a forall a. FPtr a => Ptr (Raw a) -> a cast_fptr_to_obj (Ptr RawTCanvas -> Ptr (Raw a) forall a b. Ptr a -> Ptr b castPtr Ptr RawTCanvas x)) instance () => Castable (TCanvas) (Ptr RawTCanvas) where cast :: forall r. TCanvas -> (Ptr RawTCanvas -> IO r) -> IO r cast TCanvas x Ptr RawTCanvas -> IO r f = Ptr RawTCanvas -> IO r f (Ptr RawTCanvas -> Ptr RawTCanvas forall a b. Ptr a -> Ptr b castPtr (TCanvas -> Ptr (Raw TCanvas) forall a. FPtr a => a -> Ptr (Raw a) get_fptr TCanvas x)) uncast :: forall r. Ptr RawTCanvas -> (TCanvas -> IO r) -> IO r uncast Ptr RawTCanvas x TCanvas -> IO r f = TCanvas -> IO r f (Ptr (Raw TCanvas) -> TCanvas forall a. FPtr a => Ptr (Raw a) -> a cast_fptr_to_obj (Ptr RawTCanvas -> Ptr RawTCanvas forall a b. Ptr a -> Ptr b castPtr Ptr RawTCanvas x))