TcForeign

Documentation

tcForeignImports :: [LForeignDecl GhcRn] -> TcM ([Id], [LForeignDecl GhcTc], Bag GlobalRdrElt)

tcForeignExports :: [LForeignDecl GhcRn] -> TcM (LHsBinds GhcTcId, [LForeignDecl GhcTcId], Bag GlobalRdrElt)

isForeignImport :: LForeignDecl name -> Bool

isForeignExport :: LForeignDecl name -> Bool

tcFImport :: LForeignDecl GhcRn -> TcM (Id, LForeignDecl GhcTc, Bag GlobalRdrElt)

tcFExport :: ForeignDecl GhcRn -> TcM (LHsBind GhcTc, ForeignDecl GhcTc, Bag GlobalRdrElt)

tcForeignImports' :: [LForeignDecl GhcRn] -> TcM ([Id], [LForeignDecl GhcTc], Bag GlobalRdrElt)

tcCheckFIType :: [Type] -> Type -> ForeignImport -> TcM ForeignImport

checkCTarget :: CCallTarget -> TcM ()

checkForeignArgs :: (Type -> Validity) -> [Type] -> TcM ()

checkForeignRes :: Bool -> Bool -> (Type -> Validity) -> Type -> TcM ()

Check that the type has the form (IO t) or (t) , and that t satisfies the given predicate. When calling this function, any newtype wrappers (should) have been already dealt with by normaliseFfiType.

We also check that the Safe Haskell condition of FFI imports having results in the IO monad holds.

normaliseFfiType :: Type -> TcM (Coercion, Type, Bag GlobalRdrElt)

nonIOok :: Bool

mustBeIO :: Bool

checkSafe :: Bool

noCheckSafe :: Bool

tcForeignExports' :: [LForeignDecl GhcRn] -> TcM (LHsBinds GhcTcId, [LForeignDecl GhcTcId], Bag GlobalRdrElt)

tcCheckFEType :: Type -> ForeignExport -> TcM ForeignExport