blob: 8e5266aa3ec3b646c780fd12ff7ba1b5af8ae1fe [file] [log] [blame]
* 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 covariant num cn;
* desugared as
* num get cn;
* void set cn(covariant num _);
* @author
import "../../Utils/expect.dart";
abstract class A {
abstract covariant num cn;
class C1 extends A {
num get cn => 3.14;
void set cn(num _) {}
class C2 extends C1 {
// Without covariant keyword in class A overrides below are not valid
int get cn => 42;
void set cn(int _) {}
main() {
C2 c2 = new C2();