{-# LANGUAGE EmptyDataDecls, ExistentialQuantification, FlexibleContexts, FlexibleInstances, ForeignFunctionInterface, MultiParamTypeClasses, ScopedTypeVariables, TypeFamilies, TypeSynonymInstances #-} module HROOT.Graf.TArc.Interface where import Data.Word import Data.Int import Foreign.C import Foreign.Ptr import FFICXX.Runtime.Cast import HROOT.Graf.TArc.RawType import HROOT.Graf.TEllipse.Interface class (ITEllipse a) => ITArc a where upcastTArc :: forall a . (FPtr a, ITArc a) => a -> TArc upcastTArc :: forall a. (FPtr a, ITArc a) => a -> TArc upcastTArc a h = let fh :: Ptr (Raw a) fh = a -> Ptr (Raw a) forall a. FPtr a => a -> Ptr (Raw a) get_fptr a h Ptr RawTArc fh2 :: Ptr RawTArc = Ptr (Raw a) -> Ptr RawTArc forall a b. Ptr a -> Ptr b castPtr Ptr (Raw a) fh in Ptr (Raw TArc) -> TArc forall a. FPtr a => Ptr (Raw a) -> a cast_fptr_to_obj Ptr (Raw TArc) Ptr RawTArc fh2 downcastTArc :: forall a . (FPtr a, ITArc a) => TArc -> a downcastTArc :: forall a. (FPtr a, ITArc a) => TArc -> a downcastTArc TArc h = let fh :: Ptr (Raw TArc) fh = TArc -> Ptr (Raw TArc) forall a. FPtr a => a -> Ptr (Raw a) get_fptr TArc h fh2 :: Ptr (Raw a) fh2 = Ptr RawTArc -> Ptr (Raw a) forall a b. Ptr a -> Ptr b castPtr Ptr (Raw TArc) Ptr RawTArc fh in Ptr (Raw a) -> a forall a. FPtr a => Ptr (Raw a) -> a cast_fptr_to_obj Ptr (Raw a) fh2