{-# LANGUAGE EmptyDataDecls, ExistentialQuantification, FlexibleContexts, FlexibleInstances, ForeignFunctionInterface, MultiParamTypeClasses, ScopedTypeVariables, TypeFamilies, TypeSynonymInstances #-} module STD.CppString.Interface where import Data.Word import Data.Int import Foreign.C import Foreign.Ptr import FFICXX.Runtime.Cast import STD.CppString.RawType import STD.Deletable.Interface class (IDeletable a) => ICppString a where upcastCppString :: forall a . (FPtr a, ICppString a) => a -> CppString upcastCppString :: forall a. (FPtr a, ICppString a) => a -> CppString upcastCppString 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 RawCppString fh2 :: Ptr RawCppString = Ptr (Raw a) -> Ptr RawCppString forall a b. Ptr a -> Ptr b castPtr Ptr (Raw a) fh in Ptr (Raw CppString) -> CppString forall a. FPtr a => Ptr (Raw a) -> a cast_fptr_to_obj Ptr (Raw CppString) Ptr RawCppString fh2 downcastCppString :: forall a . (FPtr a, ICppString a) => CppString -> a downcastCppString :: forall a. (FPtr a, ICppString a) => CppString -> a downcastCppString CppString h = let fh :: Ptr (Raw CppString) fh = CppString -> Ptr (Raw CppString) forall a. FPtr a => a -> Ptr (Raw a) get_fptr CppString h fh2 :: Ptr (Raw a) fh2 = Ptr RawCppString -> Ptr (Raw a) forall a b. Ptr a -> Ptr b castPtr Ptr (Raw CppString) Ptr RawCppString fh in Ptr (Raw a) -> a forall a. FPtr a => Ptr (Raw a) -> a cast_fptr_to_obj Ptr (Raw a) fh2