| // Copyright (c) 2017, 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. |
| // @dart=2.9 |
| /*@testedFeatures=checks*/ |
| library test; |
| |
| typedef void F<T>(T x); |
| |
| class B<T, U extends F<T>> { |
| B<T, F<T>> operator +(other) => null; |
| } |
| |
| class C { |
| B<num, F<num>> x; |
| static B<num, F<num>> y; |
| B<num, F<num>> operator [](int i) => null; |
| void operator []=(int i, B<num, F<num>> v) {} |
| } |
| |
| void test1(B<num, F<num>> b) { |
| b /*@ checkReturn=B<num*, (num*) ->* void>* */ += 1; |
| var x = b /*@ checkReturn=B<num*, (num*) ->* void>* */ += 2; |
| } |
| |
| void test2(C c) { |
| c[0] /*@ checkReturn=B<num*, (num*) ->* void>* */ += 1; |
| var x = c[0] /*@ checkReturn=B<num*, (num*) ->* void>* */ += 2; |
| } |
| |
| void test3(C c) { |
| c.x /*@ checkReturn=B<num*, (num*) ->* void>* */ += 1; |
| var x = c.x /*@ checkReturn=B<num*, (num*) ->* void>* */ += 2; |
| } |
| |
| void test4(C c) { |
| C.y /*@ checkReturn=B<num*, (num*) ->* void>* */ += 1; |
| var x = C.y /*@ checkReturn=B<num*, (num*) ->* void>* */ += 2; |
| } |
| |
| void main() {} |