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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 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. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 import "package:expect/expect.dart"; | 5 import "package:expect/expect.dart"; |
6 | 6 |
7 class A { | 7 class A { |
8 var _x, _y; | 8 var _x, _y; |
9 A(x, [y = 10]): _x = x++, _y = y++ { | 9 A(x, [y = 10]): _x = x++, _y = y++ { |
10 // Check that value of modified constructor parameters | 10 // Check that value of modified constructor parameters |
11 // is remembered in the constructor body. | 11 // is remembered in the constructor body. |
12 Expect.equals(x, _x + 1); | 12 Expect.equals(x, _x + 1); |
13 Expect.equals(y, _y + 1); | 13 Expect.equals(y, _y + 1); |
14 Expect.isFalse(?y); /// 01: compile-time error | 14 Expect.isFalse(?y); // /// 01: compile-time error |
15 } | 15 } |
16 } | 16 } |
17 | 17 |
18 class B extends A { | 18 class B extends A { |
19 var _a, _b; | 19 var _a, _b; |
20 // The super call in the middle of the initializer list conceptually | 20 // The super call in the middle of the initializer list conceptually |
21 // forces two super call chains, one for initializer list and a second | 21 // forces two super call chains, one for initializer list and a second |
22 // one for the constructor bodies. | 22 // one for the constructor bodies. |
23 B(a, b): _a = a++, super(a + b++), _b = b++ { | 23 B(a, b): _a = a++, super(a + b++), _b = b++ { |
24 Expect.equals(a, _a + 1); | 24 Expect.equals(a, _a + 1); |
25 Expect.equals(b, _b + 1); | 25 Expect.equals(b, _b + 1); |
26 Expect.equals(a + (b-2), _x); | 26 Expect.equals(a + (b-2), _x); |
27 } | 27 } |
28 } | 28 } |
29 | 29 |
30 main() { | 30 main() { |
31 var o = new B(3, 5); | 31 var o = new B(3, 5); |
32 Expect.equals(3, o._a); | 32 Expect.equals(3, o._a); |
33 Expect.equals(6, o._b); | 33 Expect.equals(6, o._b); |
34 Expect.equals(9, o._x); | 34 Expect.equals(9, o._x); |
35 Expect.equals(10, o._y); | 35 Expect.equals(10, o._y); |
36 o = new A(3); | 36 o = new A(3); |
37 Expect.equals(3, o._x); | 37 Expect.equals(3, o._x); |
38 Expect.equals(10, o._y); | 38 Expect.equals(10, o._y); |
39 } | 39 } |
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