{-# LANGUAGE EmptyDataDecls, ExistentialQuantification, FlexibleContexts, FlexibleInstances, ForeignFunctionInterface, MultiParamTypeClasses, ScopedTypeVariables, TypeFamilies, TypeSynonymInstances #-} module HROOT.Graf.TArrow.Interface where import Data.Word import Data.Int import Foreign.C import Foreign.Ptr import FFICXX.Runtime.Cast import HROOT.Graf.TArrow.RawType import HROOT.Graf.TLine.Interface import HROOT.Core.TAttFill.Interface class (ITLine a, ITAttFill a) => ITArrow a where upcastTArrow :: forall a . (FPtr a, ITArrow a) => a -> TArrow upcastTArrow :: forall a. (FPtr a, ITArrow a) => a -> TArrow upcastTArrow 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 RawTArrow fh2 :: Ptr RawTArrow = Ptr (Raw a) -> Ptr RawTArrow forall a b. Ptr a -> Ptr b castPtr Ptr (Raw a) fh in Ptr (Raw TArrow) -> TArrow forall a. FPtr a => Ptr (Raw a) -> a cast_fptr_to_obj Ptr (Raw TArrow) Ptr RawTArrow fh2 downcastTArrow :: forall a . (FPtr a, ITArrow a) => TArrow -> a downcastTArrow :: forall a. (FPtr a, ITArrow a) => TArrow -> a downcastTArrow TArrow h = let fh :: Ptr (Raw TArrow) fh = TArrow -> Ptr (Raw TArrow) forall a. FPtr a => a -> Ptr (Raw a) get_fptr TArrow h fh2 :: Ptr (Raw a) fh2 = Ptr RawTArrow -> Ptr (Raw a) forall a b. Ptr a -> Ptr b castPtr Ptr (Raw TArrow) Ptr RawTArrow fh in Ptr (Raw a) -> a forall a. FPtr a => Ptr (Raw a) -> a cast_fptr_to_obj Ptr (Raw a) fh2