blob: 060f825716daf12c0ffc304b6f8d9adf10bd02ca [file] [log] [blame]
// Copyright (c) 2018, 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 = 2.7
/*class: A:checkedInstance*/
class A {}
/*class: B:checks=[$isA],indirectInstance*/
class B implements A {}
/*class: C:checks=[],indirectInstance*/
class C extends B {} // Implements A through `extends B`.
/*class: D:checks=[],instance*/
class D extends C {} // Implements A through `extends C`.
test(o) => o is A;
main() {
test(new D());