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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 // f closes-over arg. arg needs to be preserved while b2 is initialized. | |
| 18 A(arg) | |
| 19 : a = E(arg += 1) | |
| 20 , f = (() => E(arg += 10)) { | |
| 21 // b2 should be initialized between the above initializers and the following | |
| 22 // statements. | |
| 23 var r1 = f(); | |
| 24 E(arg += 100); // If this is the same arg as closed by f, ... | |
| 25 var r2 = f(); // .. the effect of +=100 will be seen here. | |
| 26 } | |
| 27 final a; | |
| 28 final f; | |
| 29 } | |
| 30 | |
| 31 class B extends A { | |
| 32 // Initializers in order: b1, super, b2. | |
| 33 B(x, y) : b1 = E(x++), super(1000), b2 = E(y++) { | |
| 34 // Implicit super call to A's body happens here. | |
| 35 E(x); | |
| 36 E(y); | |
| 37 f(); | |
| 38 } | |
| 39 var b1; | |
| 40 var b2; | |
| 41 } | |
| 42 | |
| 43 class C extends B { | |
| 44 C() : super(10, 20); | |
| 45 } | |
| 46 | |
| 47 main() { | |
| 48 var c = new C(); | |
| 49 Expect.equals("10-1001-20-1011-1111-1121-11-21-1131-", trace); | |
| 50 } | |
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