stdcxx-0.7.0.0: src/STD/Ostream/Interface.hs

{-# LANGUAGE EmptyDataDecls, ExistentialQuantification,
  FlexibleContexts, FlexibleInstances, ForeignFunctionInterface,
  MultiParamTypeClasses, ScopedTypeVariables, TypeFamilies,
  TypeSynonymInstances #-}
module STD.Ostream.Interface where
import Data.Word
import Data.Int
import Foreign.C
import Foreign.Ptr
import FFICXX.Runtime.Cast
import STD.Ostream.RawType

class () => IOstream a where

upcastOstream :: forall a . (FPtr a, IOstream a) => a -> Ostream
upcastOstream h
  = let fh = get_fptr h
        fh2 :: Ptr RawOstream = castPtr fh
      in cast_fptr_to_obj fh2

downcastOstream :: forall a . (FPtr a, IOstream a) => Ostream -> a
downcastOstream h
  = let fh = get_fptr h
        fh2 = castPtr fh
      in cast_fptr_to_obj fh2