| // 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 GenericType1<T> is a subtype of GenericType2<S> |
| /// where T and S are complex generics. Checks mutual assignability as well. |
| /// @issue 27556 |
| /// @author iefremov |
| |
| import "../../../Utils/expect.dart"; |
| |
| class I<A, B, C> {} |
| |
| class J<A, B, C> extends I<A, B, C> {} |
| |
| class K extends J {} |
| |
| class C extends K {} |
| |
| typedef J f(I<K, List<Map<int, double>>, int> i, [List<Map> j]); |
| typedef K f_1(I<J, List<Map<int, num>>, num> i, [List<Map> j]); |
| typedef C f_2(I<J, List<Map<int, num>>, num> i, [List<Map> j]); |
| |
| main() { |
| Expect.isTrue(new I<f_1, int, List<Map<int, Map<int, int>>>>() |
| is I<f, num, List<Map<num, Map>>>); |
| Expect.runtimeIsType<I<f, num, List<Map<num, Map>>>>( |
| new I<f_1, int, List<Map<int, Map<int, int>>>>()); |
| Expect.isTrue(new I<f_2, int, List<Map<int, Map<int, int>>>>() |
| is I<f, num, List<Map<num, Map>>>); |
| Expect.runtimeIsType<I<f, num, List<Map<num, Map>>>>( |
| new I<f_2, int, List<Map<int, Map<int, int>>>>()); |
| Expect.isTrue(new J<f_1, int, List<Map<int, Map<int, int>>>>() |
| is I<f, num, List<Map<num, Map>>>); |
| Expect.runtimeIsType<I<f, num, List<Map<num, Map>>>>( |
| new J<f_1, int, List<Map<int, Map<int, int>>>>()); |
| Expect.isTrue(new J<f_2, int, List<Map<int, Map<int, int>>>>() |
| is I<f, num, List<Map<num, Map>>>); |
| Expect.runtimeIsType<I<f, num, List<Map<num, Map>>>>( |
| new J<f_2, int, List<Map<int, Map<int, int>>>>()); |
| Expect.isFalse(new K() is I<f, num, List<Map<num, Map>>>); |
| Expect.runtimeIsNotType<I<f, num, List<Map<num, Map>>>>(new K()); |
| Expect.isFalse(new C() is I<f, num, List<Map<num, Map>>>); |
| Expect.runtimeIsNotType<I<f, num, List<Map<num, Map>>>>(new C()); |
| |
| I<f, num, List<Map<num, Map>>> v1_ = |
| new I<f_1, int, List<Map<int, Map<int, int>>>>(); |
| |
| I<f, num, List<Map<num, Map>>> v2_ = |
| new I<f_2, int, List<Map<int, Map<int, int>>>>(); |
| |
| I<f, num, List<Map<num, Map>>> v3_ = |
| new J<f_1, int, List<Map<int, Map<int, int>>>>(); |
| |
| I<f, num, List<Map<num, Map>>> v4_ = |
| new J<f_2, int, List<Map<int, Map<int, int>>>>(); |
| } |