blob: e68382e7aabd01b0493a1b1905b1f7cfac3f1034 [file] [log] [blame]
/*
* Copyright (c) 2019, 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 The grammar of selectors is extended to allow null-aware
* subscripting using the syntax e1?[e2] which evaluates to null if e1
* evaluates to null and otherwise evaluates as e1[e2].
*
* @description Check that the grammar of selectors is extended to allow
* null-aware subscripting using the syntax e1?[e2] which evaluates to null if
* e1 evaluates to null and otherwise evaluates as e1[e2].
* @static-warning
* @author sgrekhov@unipro.ru
* @issue 39865
*/
// Requirements=nnbd-strong
import "../../Utils/expect.dart";
class C {
int operator[](int index) => index * 2;
}
main() {
C? c = null;
Expect.isNull(c?[42]);
c = new C();
Expect.equals(4, c?[2]); /// static type warning
}