| // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| /// @assertion A type T is more specific than a type S, written T << S, if one |
| /// of the following conditions is met: |
| /// • T is S. |
| /// • T is ⊥ |
| /// • S is dynamic. |
| /// • S is a direct supertype of T. |
| /// • T is a type parameter and S is the upper bound of T. |
| /// • T is a type parameter and S is Object. |
| /// • T is of the form I<T1, ..., Tn > and S is of the form I <S1, ..., Sn> |
| /// and Ti << Si 1 <= i <= n. |
| /// • T and S are both function types, and T << S under the rules of section |
| /// (Types/Function Types). |
| /// • T is a function type and S is Function. |
| /// • T << U and U << S. |
| /// << is a partial order on types. T is a subtype of S, written T <: S, iff |
| /// [⊥/Dynamic]T << S. |
| /// . . . |
| /// An interface type T may be assigned to a type S, written T <=> S, if either |
| /// T <: S or S <: T. |
| /// @description Checks that GenericType<T> is mutually assignable with |
| /// GenericType<S> (no static type warnings) where T is a subtype of S (T and |
| /// S are non-generic interfaces and/or Dynamic). |
| /// @author iefremov |
| |
| |
| class I {} |
| class J extends I {} |
| class K extends J {} |
| |
| class Z<T> { |
| Z() {} |
| } |
| |
| main() { |
| List<String> l1 = new List.empty(); |
| List l2 = new List<String>.empty(); |
| |
| List<Object> l3_ = new List<String>.empty(); |
| |
| List<num> l4_ = new List<int>.empty(); |
| |
| List<Object> l5_ = new List<int>.empty(); |
| |
| List<Object> l6_ = new List<double>.empty(); |
| |
| List<num> l7_ = new List<double>.empty(); |
| |
| List<Object> l8_ = new List<J>.empty(); |
| |
| List<I> l9_ = new List<I>.empty(); |
| |
| List<I> l10_ = new List<K>.empty(); |
| |
| List<J> l11_ = new List<K>.empty(); |
| |
| List<int> l12 = new List.empty(); |
| |
| List<double> l13 = new List.empty(); |
| |
| List<J> l14 = new List.empty(); |
| |
| List<String> z1 = new List<String>.empty(); |
| List z2 = new List<String>.empty(); |
| |
| Z<Object> z3_ = new Z<String>(); |
| |
| Z<num> z4_ = new Z<int>(); |
| |
| Z<Object> z5_ = new Z<int>(); |
| |
| Z<Object> z6_ = new Z<double>(); |
| |
| Z<num> z7_ = new Z<double>(); |
| |
| Z<Object> z8_ = new Z<J>(); |
| |
| Z<I> z9_ = new Z<J>(); |
| |
| Z<I> z10_ = new Z<K>(); |
| |
| Z<J> z11_ = new Z<K>(); |
| |
| Z<int> z12 = new Z(); |
| |
| Z<double> z13 = new Z(); |
| |
| Z<J> z14 = new Z(); |
| } |