blob: 6db60ce3821f350dc0608f37bb7006633e853759 [file] [log] [blame]
// TODO(multitest): This was automatically migrated from a multitest and may
// contain strange or dead code.
// Copyright (c) 2015, 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.
// Verify semantics of the ?. operator when it does not appear on the LHS of an
// assignment.
import "package:expect/expect.dart";
import "conditional_access_helper.dart" as h;
class B {}
class C extends B {
int? v;
static int? staticInt;
C? nullC() => null;
main() {
// Make sure the "none" test fails if property access using "?." is not
// implemented. This makes status files easier to maintain.
// e1?.id is equivalent to ((x) => x == null ? null :
// C?.id is equivalent to
// The static type of e1?.d is the static type of
var c = new C(1) as C?;
{ int? i = c?.v; Expect.equals(1, i); }
// Let T be the static type of e1 and let y be a fresh variable of type T.
// Exactly the same static warnings that would be caused by are also
// generated in the case of e1?.id.
// '?.' cannot be used to access toplevel properties in libraries imported via
// prefix.
// Nor can it be used to access the hashCode getter on the class Type.