Language/12_Expressions/18_Assignment_A06_t01.dart

/*
 * 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 Evaluation of an assignment of the form e1.v = e2 proceeds as follows:
 * ...
 * In checked mode, it is a dynamic type error if o2 is not null and the interface
 * of the class of o2 is not a subtype of the actual type of e1.v.
 * @description Checks that it is a dynamic type error if o2 is not null and the interface
 * of the class of o2 is not a subtype of the actual type of e1.v.
 * @author msyabro
 * @reviewer kaigorodov
 */

import "../../Utils/dynamic_check.dart";

f(x) {return x;}

class A {}
class B extends A {}

class C {
  int v;
  B b;
}

main() {
  C c = new C();
  checkTypeError( () {
    c.v = f(true); //to avoid static warning
  });
  checkTypeError( () {
    c.v = f(""); //to avoid static warning
  });
  checkTypeError( () {
    c.v = f(0.2); //to avoid static warning
  });
  checkTypeError( () {
    c.b = f(new A()); //to avoid static warning
  });
}