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1 // Copyright (c) 2011, 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 // Dart test program for constructors and initializers. | |
5 | |
6 // Super initializer and super constructor body are executed in with the same | |
7 // bindings. | |
8 | |
9 String trace = ""; | |
10 | |
11 int E(int i) { | |
12 trace += "$i-"; | |
13 return i; | |
14 } | |
15 | |
16 class A { | |
17 A([arg1 = 100, arg2 = 200]) : a1 = E(arg1++), a2 = E(arg2++) { | |
18 // b2 should be initialized between the above initializers and the following | |
19 // statements. | |
20 E(arg1); // 101 | |
21 E(arg2); // 51 | |
22 } | |
23 var a1; | |
24 var a2; | |
25 } | |
26 | |
27 class B extends A { | |
28 // Initializers in order: b1, super, b2. | |
29 B(x, y) : b1 = E(x++), super(arg2: 50), b2 = E(y++) { | |
30 // Implicit super call to A's body happens here. | |
31 E(x); // 11 | |
32 E(y); // 21 | |
33 } | |
34 var b1; | |
35 var b2; | |
36 } | |
37 | |
38 class C extends B { | |
39 C() : super(10, 20); | |
40 } | |
41 | |
42 main() { | |
43 var c = new C(); | |
44 Expect.equals(100, c.a1); | |
45 Expect.equals(50, c.a2); | |
46 Expect.equals(10, c.b1); | |
47 Expect.equals(20, c.b2); | |
48 | |
49 Expect.equals("10-100-50-20-101-51-11-21-", trace); | |
50 } | |
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