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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 // Expect the initializer expressions E(i) to be evaluated | |
7 // in the order 1, 2, 3, ... | |
8 // Each expression must be evaluated exactly once. | |
9 | |
10 String trace = ""; | |
11 | |
12 int E(int i) { | |
13 trace = trace.concat("$i-"); | |
14 return i; | |
15 } | |
16 | |
17 class A { | |
18 var a1; | |
19 A(x, y) : a1 = E(3) { | |
20 Expect.equals(1, x); | |
21 Expect.equals(2, y); | |
22 E(5); | |
23 } | |
24 } | |
25 | |
26 class B extends A { | |
27 var b1; | |
28 B(x) : super(E(1), E(2)), b1 = E(4) { | |
29 // Implicit super call to A's body happens here. | |
30 Expect.equals(4, b1); | |
31 E(6); | |
32 } | |
33 } | |
34 | |
35 main() { | |
36 var b = new B(0); | |
37 Expect.equals("1-2-3-4-5-6-", trace); | |
38 } | |
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