LanguageFeatures/Abstract-external-fields/static_analysis_abstract_A02_t03.dart

// Copyright (c) 2020, 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 An abstract instance variable declaration D is treated as an
 * abstract getter declaration and possibly an abstract setter declaration. The
 * setter is included if and only if D is non-final. The return type of the
 * getter and the parameter type of the setter, if present, is the type of D
 * (which may be declared explicitly, obtained by override inference, or
 * defaulted to dynamic). The parameter of the setter, if present, has the
 * modifier covariant if and only if D has the modifier covariant
 *
 * @description Checks that declaration
 *  abstract var x;
 * desugared as
 *  dynamic get x;
 *  void set x(dynamic _);
 * @author sgrekhov@unipro.ru
 */

abstract class A {
  abstract var x;
}

class C1 extends A {
  get x => 42;
  void set x(var _) {}
}

class C2 extends A {
  var x = "Lily was here";
}

main() {
  A a1 = C1();
  A a2 = C2();
}