| // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| // Dart test program for constructors and initializers. |
| |
| import "package:expect/expect.dart"; |
| |
| // Super initializer and super constructor body are executed in with the same |
| // bindings. |
| |
| String trace = ""; |
| |
| int E(int i) { |
| trace = "$trace$i-"; |
| return i; |
| } |
| |
| class A { |
| // f closes-over arg. arg needs to be preserved while b2 is initialized. |
| A(arg) |
| : a = E(arg += 1), |
| f = (() => E(arg += 10)) { |
| // b2 should be initialized between the above initializers and the following |
| // statements. |
| var r1 = f(); |
| E(arg += 100); // If this is the same arg as closed by f, ... |
| var r2 = f(); // .. the effect of +=100 will be seen here. |
| } |
| final a; |
| final f; |
| } |
| |
| class B extends A { |
| // Initializers in order: b1, super, b2. |
| B(x, y) |
| : b1 = E(x++), |
| b2 = E(y++), |
| super(1000) { |
| // Implicit super call to A's body happens here. |
| E(x); |
| E(y); |
| f(); |
| } |
| var b1; |
| var b2; |
| } |
| |
| class C extends B { |
| C() : super(10, 20); |
| } |
| |
| main() { |
| var c = new C(); |
| Expect.equals("10-20-1001-1011-1111-1121-11-21-1131-", trace); |
| } |