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| 1 // Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file | |
| 2 // for details. All rights reserved. Use of this source code is governed by a | |
| 3 // BSD-style license that can be found in the LICENSE file. | |
| 4 | |
| 5 // Test that F-bounded quantification works for generic methods, and that types | |
| 6 // that are passed to generic methods in dynamic calls are checked for being | |
| 7 // recursively defined. | |
| 8 | |
| 9 library generic_methods_recursive_bound_test; | |
| 10 | |
| 11 import "package:expect/expect.dart"; | |
| 12 | |
| 13 abstract class I<T> { | |
| 14 bool fun(T x); | |
| 15 } | |
| 16 | |
| 17 void foo<T extends I<T>>(List<T> a) { | |
| 18 if (a.length > 1) { | |
| 19 a[0].fun(a[1]); | |
| 20 } | |
| 21 } | |
| 22 | |
| 23 class C implements I<C> { | |
| 24 bool fun(C c) => true; | |
| 25 } | |
| 26 | |
| 27 main() { | |
| 28 foo<C>(<C>[new C(), new C()]); //# 01: ok | |
| 29 | |
| 30 dynamic bar = foo; | |
| 31 List<int> list2 = <int>[4, 2]; | |
| 32 // The type int does not extend I<int>. | |
| 33 foo<int>(list2); //# 02: compile-time error | |
| 34 bar<int>(list2); //# 03: runtime error | |
| 35 } | |
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