| /* |
| * 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 variable and S is the upper bound of T. |
| * - 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. |
| * T is a subtype of S, written T <: S, iff [⊥/Dynamic]T << S. |
| * A type T may be assigned to a type S, written T <=> S, if either T <: S or S <: T . |
| * @description Checks that two generic types are not assignable even if just one type argument is not assignable. |
| * Using complex generic types. |
| * @static-warning |
| * @author iefremov |
| * @reviewer rodionov |
| */ |
| |
| 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<J, List<Map>, num> i, [List j]); |
| typedef K f_1(I<K, List<Map<int, num>>, int> i, [List<Map> j]); |
| |
| I<f, num, List<Map<num, Map<int, double>>>> checker(){} |
| |
| main() { |
| // I<f_1, int, List<Map<int, Map<int, int>>>> i = new I<f, num, List<Map<num, Map<int, double>>>>(); |
| // ^^^ <=/=> ^^^ |
| I<f_1, int, List<Map<int, Map<int, int>>>> i = checker(); /// static type warning |
| } |
