{-# LANGUAGE EmptyDataDecls, FlexibleInstances,
  MultiParamTypeClasses, TypeFamilies #-}
module STD.UniquePtr.Template where
import Foreign.C.Types
import Foreign.Ptr
import FFICXX.Runtime.Cast

data RawUniquePtr tp1

newtype UniquePtr tp1 = UniquePtr (Ptr (RawUniquePtr tp1))

class () => IUniquePtr tp1 where
        newUniquePtr0 :: IO (UniquePtr tp1)
        
        newUniquePtr :: tp1 -> IO (UniquePtr tp1)
        
        get :: UniquePtr tp1 -> IO tp1
        
        release :: UniquePtr tp1 -> IO tp1
        
        reset :: UniquePtr tp1 -> IO ()
        
        deleteUniquePtr :: UniquePtr tp1 -> IO ()

instance () => FPtr (UniquePtr tp1) where
        type Raw (UniquePtr tp1) = RawUniquePtr tp1
        get_fptr (UniquePtr ptr) = ptr
        cast_fptr_to_obj = UniquePtr

instance () => Castable (UniquePtr tp1) (Ptr (RawUniquePtr tp1))
         where
        cast x f = f (castPtr (get_fptr x))
        uncast x f = f (cast_fptr_to_obj (castPtr x))