| /* |
| * 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 In a setOrMapLiteral collection, the inferred type of an element |
| * is a set element type T, a pair of a key type K and a value type V, or both. |
| * It is computed relative to a context type P: |
| * |
| * If collection is unambiguously a set literal, then P is Set<Pe> where Pe is |
| * determined by downwards inference, and may be ? if downwards inference does |
| * not constrain it. |
| * |
| * @description Checks that if collection is unambiguously a set literal, then P |
| * is Set<Pe> where Pe is determined by downwards inference and may be ? |
| * @author sgrekhov@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=constant-update-2018 |
| import "../../Utils/expect.dart"; |
| |
| void foo<X extends num>(Set<X> s) { |
| Expect.isTrue(s is Set<int>); |
| } |
| |
| main() { |
| foo({1}); |
| foo({...{3, 1, 4}}); |
| foo({if (2 > 1) ...{3, 1, 4}}); |
| foo({if (2 < 1) ...{3, 1, 4}}); |
| } |