| /* |
| * 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 The function type (T1, ... Tn, {Tx1 x1, ..., Txk xk}) -> T is a |
| * subtype of the function type (S1, ..., Sn, {Sy1 y1, ..., Sym ym }) -> S, if |
| * all of the following conditions are met: |
| * 1. Either |
| * • S is void, Or |
| * • T ⇐⇒ S. |
| * 2. ∀i ∈ 1..n, Ti ⇐⇒ Si . |
| * 3. k ≥ m and yi ∈ {x1 , ..., xk }, i ∈ 1..m. |
| * 4. For all yi ∈ {y1 , ..., ym }, yi = xj ⇒ Tj ⇐⇒ Si. |
| * @description Checks that function type t1 is not a subtype of function type |
| * t2 if the type of a single named optional parameter of t1 is not assignable |
| * to the type of t2's single named optional parameter. |
| * @author rodionov |
| */ |
| import "../../../Utils/expect.dart"; |
| |
| class A {} |
| class B {} |
| |
| typedef t1({int p}); |
| typedef t2({A? p}); |
| typedef t3({List<A> p}); |
| typedef t4({t1? p}); |
| |
| main() { |
| Expect.isFalse(({double p = 3.14}) {} is t1); |
| Expect.isFalse(({bool p = false}) {} is t1); |
| Expect.isFalse(({A? p}) {} is t1); |
| Expect.isFalse(({List<int> p = const [3, 1, 4]}) {} is t1); |
| Expect.isFalse(({t2? p}) {} is t1); |
| |
| Expect.isFalse(({double p = 3.14}) {} is t2); |
| Expect.isFalse(({bool p = false}) {} is t2); |
| Expect.isFalse(({List<int> p = const [3, 1, 4]}) {} is t2); |
| Expect.isFalse(({t2? p}) {} is t2); |
| Expect.isFalse(({B? p}) {} is t2); |
| |
| Expect.isFalse(({double p = 3.14}) {} is t3); |
| Expect.isFalse(({bool p = false}) {} is t3); |
| Expect.isFalse(({A? p}) {} is t3); |
| Expect.isFalse(({List<int> p = const <int>[]}) {} is t3); |
| Expect.isFalse(({List<B>? p}) {} is t3); |
| Expect.isFalse(({t2? p}) {} is t3); |
| |
| Expect.isFalse(({double p = 42}) {} is t4); |
| Expect.isFalse(({bool p = true}) {} is t4); |
| Expect.isFalse(({A? p}) {} is t4); |
| Expect.isFalse(({List<int> p = const []}) {} is t4); |
| Expect.isFalse(({t2? p}) {} is t4); |
| Expect.isFalse(({t3? p}) {} is t4); |
| Expect.isFalse(({t4? p}) {} is t4); |
| } |