stdcxx-0.7.0.0: src/STD/CppString/Cast.hs

{-# LANGUAGE FlexibleInstances, FlexibleContexts, TypeFamilies,
  MultiParamTypeClasses, OverlappingInstances, IncoherentInstances
  #-}
module STD.CppString.Cast where
import Foreign.Ptr
import FFICXX.Runtime.Cast
import System.IO.Unsafe
import STD.CppString.RawType
import STD.CppString.Interface

instance (ICppString a, FPtr a) => Castable (a) (Ptr RawCppString)
         where
        cast x f = f (castPtr (get_fptr x))
        uncast x f = f (cast_fptr_to_obj (castPtr x))

instance () => Castable (CppString) (Ptr RawCppString) where
        cast x f = f (castPtr (get_fptr x))
        uncast x f = f (cast_fptr_to_obj (castPtr x))