| // 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. |
| |
| /// @assertion Execution of a generative constructor k is always done with |
| /// respect to a set of bindings for its formal parameters and with this bound |
| /// to a fresh instance i and the type parameters of the immediately enclosing |
| /// class bound to a set of actual type arguments V1, ... , Vm. |
| /// If k is redirecting then its redirect clause has the form |
| /// this.g(a1, ..., an, xn+1: an+1, ..., xn+k: an+k) |
| /// where g identifies another generative constructor of the immediately |
| /// surrounding class. Then execution of k proceeds by evaluating the argument |
| /// list (a1, ..., an, xn+1: an+1, ..., xn+k: an+k) and then executing g with |
| /// respect to the bindings resulting from the evaluation of (a1, ..., an, xn+1: |
| /// an+1, ..., xn+k: an+k) and with this bound to i and the type parameters of |
| /// the immediately enclosing class bound to V1, ... , Vm. |
| /// Otherwise, execution proceeds as follows: |
| /// Any initializing formals declared in k's parameter list are executed in the |
| /// order they appear in the program text. Then, k's initializers are executed |
| /// in the order they appear in the program. |
| /// After all the initializers have completed, the body of k is executed in a |
| /// scope where this is bound to i. Execution of the body begins with execution |
| /// of the body of the superconstructor with this bound to i, the type |
| /// parameters of the immediately enclosing class bound to a set of actual type |
| /// arguments V1, ... , Vm and the formal parameter bindings determined by the |
| /// argument list of the superinitializer of k. |
| /// @description Checks that the constructor body is executed after all |
| /// initializers and 'this' reference as well as all instance fields are |
| /// accessible in the constructor body. |
| /// @author iefremov |
| /// @needsreview It seems to be impossible to verify the order initialized |
| /// variable declarations are processed because we can't invoke any methods |
| /// there which would help observe the exact sequence. Same about the |
| /// initializing formals. |
| |
| import "../../../../Utils/expect.dart"; |
| |
| class C { |
| C(this.f) : c = "c", d = "d", e = "e" { |
| Expect.equals(1, a, "Instance variable should already be initialized!"); |
| Expect.equals("You are not paid to think!", this.b, |
| "Instance variable should already be initialized!"); |
| Expect.equals("c", this.c, |
| "Instance variable should already be initialized!"); |
| Expect.equals("d", d, "Instance variable should already be initialized!"); |
| Expect.equals("e", e, "Instance variable should already be initialized!"); |
| Expect.equals("f", f, "Instance variable should already be initialized!"); |
| } |
| |
| var e, d, c; |
| var f; |
| var a = 1; |
| final b = "You are not paid to think!"; |
| } |
| |
| main() { |
| new C("f"); |
| } |