| OLD | NEW |
| (Empty) |
| 1 // Copyright (c) 2012, 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 // Tests classes with getters and setters that do not have the same type. | |
| 6 | |
| 7 class A { | |
| 8 int a() { return 37;} | |
| 9 } | |
| 10 | |
| 11 class B extends A{ | |
| 12 int b() { return 38; } | |
| 13 } | |
| 14 | |
| 15 class C {} | |
| 16 | |
| 17 class T1 { | |
| 18 A getterField; | |
| 19 A get field() { return getterField; } | |
| 20 // OK, B is assignable to A | |
| 21 void set field(B arg) { getterField = arg; } | |
| 22 } | |
| 23 | |
| 24 class T2 { | |
| 25 A getterField; | |
| 26 C setterField; | |
| 27 A get field() { return getterField; } | |
| 28 | |
| 29 // Type C is not assignable to A | |
| 30 void set field(C arg) { setterField = arg; } /// 01: static type warning | |
| 31 } | |
| 32 | |
| 33 class T3 { | |
| 34 B getterField; | |
| 35 B get field() { return getterField; } | |
| 36 // OK, A is assignable to B | |
| 37 void set field(A arg) { getterField = arg; } | |
| 38 } | |
| 39 | |
| 40 | |
| 41 main() { | |
| 42 T1 instance1 = new T1(); | |
| 43 T2 instance2 = new T2(); /// 01: continued | |
| 44 T3 instance3 = new T3(); | |
| 45 | |
| 46 instance1.field = new B(); | |
| 47 A resultA = instance1.field; | |
| 48 instance1.field = new A(); /// 03: dynamic type error | |
| 49 B resultB = instance1.field; | |
| 50 | |
| 51 int result; | |
| 52 result = instance1.field.a(); | |
| 53 Expect.equals(37, result); | |
| 54 | |
| 55 // Type 'A' has no method named 'b' | |
| 56 instance1.field.b(); /// 02: static type warning | |
| 57 | |
| 58 instance3.field = new B(); | |
| 59 result = instance3.field.a(); | |
| 60 Expect.equals(37, result); | |
| 61 result = instance3.field.b(); | |
| 62 Expect.equals(38, result); | |
| 63 } | |
| OLD | NEW |