| // Copyright (c) 2019, 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 generic type alias is a declaration [D] of one of the following |
| /// forms: |
| /// ... |
| /// m typedef S? id<X1 extends B1, . . . , Xs extends Bs>( |
| /// T1 p1, . . . , Tn pn, [Tn+1 pn+1, . . . , Tn+k pn+k]); |
| /// ... |
| /// where [m] is derived from metadata, [T] is a type, and [S?] is a type or the |
| /// empty string. Let [S0] be [S?] if it is a type, otherwise let [S0] be |
| /// [dynamic]. The associated type of [D], call it [F], is, respectively: |
| /// ... |
| /// S0 Function(T1, . . . , Tn, [Tn+1, . . . , Tn+k]) |
| /// ... |
| /// @description Checks that function generic type alias declaration can contain |
| /// metadata. |
| /// @author iarkh@unipro.ru |
| |
| |
| import "../../Utils/expect.dart"; |
| |
| const i = 1; |
| class A { const A(); } |
| |
| @i typedef int test1<T extends num>(); |
| @A() typedef T test2<T>(T x, int y); |
| |
| int t1<T extends int>() { |
| Expect.equals(int, T); |
| return 0; |
| } |
| |
| T t2<T>(T x, int y) { |
| Expect.equals(dynamic, T); |
| return 14 as T; |
| } |
| |
| main() { |
| test1 res1 = t1; |
| res1(); |
| |
| test2 res2 = t2; |
| var x = res2("123", 14); |
| } |