+ let mk_sum [(expr, ty)] = return (expr, ty)
+ mk_sum es
+ = do
+ sum_tc <- builtin . sumTyCon $ length es
+ (sum_rtc, _) <- parrayReprTyCon (mkTyConApp sum_tc tys)
+ let [sum_rdc] = tyConDataCons sum_rtc
+
+ return (mkConApp sum_rdc (map Type tys ++ (len : sel : exprs)),
+ mkTyConApp sum_tc tys)
+ where
+ (exprs, tys) = unzip es
+
+ mk_prod [expr] = return (expr, splitPArrayTy (exprType expr))
+ mk_prod exprs
+ = do
+ prod_tc <- builtin . prodTyCon $ length exprs
+ (prod_rtc, _) <- parrayReprTyCon (mkTyConApp prod_tc tys)
+ let [prod_rdc] = tyConDataCons prod_rtc
+
+ return (mkConApp prod_rdc (map Type tys ++ (len : exprs)),
+ mkTyConApp prod_tc tys)
+ where
+ tys = map (splitPArrayTy . exprType) exprs
+
+ liftM fst (mk_sum =<< mapM mk_prod ess)
+
+mkFromArrPRepr :: CoreExpr -> Type -> Var -> Var -> [[Var]] -> CoreExpr
+ -> VM CoreExpr
+mkFromArrPRepr scrut res_ty len sel vars res
+ = return (Var unitDataConId)
+
+mkClosureType :: Type -> Type -> VM Type
+mkClosureType arg_ty res_ty = mkBuiltinTyConApp closureTyCon [arg_ty, res_ty]
+
+mkClosureTypes :: [Type] -> Type -> VM Type
+mkClosureTypes = mkBuiltinTyConApps closureTyCon
+
+mkPReprType :: Type -> VM Type
+mkPReprType ty = mkBuiltinTyConApp preprTyCon [ty]
+
+mkPADictType :: Type -> VM Type
+mkPADictType ty = mkBuiltinTyConApp paTyCon [ty]