-abstractOverTyVars :: [TyVar] -> ((CoreExpr -> CoreExpr) -> VM a) -> VM a
-abstractOverTyVars tvs p
- = do
- mdicts <- mapM mk_dict_var tvs
- zipWithM_ (\tv -> maybe (defLocalTyVar tv) (defLocalTyVarWithPA tv . Var)) tvs mdicts
- p (mk_lams mdicts)
- where
- mk_dict_var tv = do
- r <- paDictArgType tv
- case r of
- Just ty -> liftM Just (newLocalVar FSLIT("dPA") ty)
- Nothing -> return Nothing
-
- mk_lams mdicts = mkLams (tvs ++ [dict | Just dict <- mdicts])
-
-applyToTypes :: CoreExpr -> [Type] -> VM CoreExpr
-applyToTypes expr tys
- = do
- dicts <- mapM paDictOfType tys
- return $ expr `mkTyApps` tys `mkApps` dicts
-