mirror of
https://github.com/dart-lang/sdk
synced 2024-09-19 14:32:49 +00:00
39fbdcd2c9
Change-Id: Iea8e8826b41d3996916dd24153ab846ef49eeda4 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/148945 Commit-Queue: Bob Nystrom <rnystrom@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com> Reviewed-by: Erik Ernst <eernst@google.com> Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
46 lines
740 B
Dart
46 lines
740 B
Dart
// TODO(multitest): This was automatically migrated from a multitest and may
|
|
// contain strange or dead code.
|
|
|
|
// 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.
|
|
|
|
/*@testedFeatures=inference*/
|
|
library test;
|
|
|
|
class A {
|
|
late B b;
|
|
}
|
|
|
|
class B {
|
|
C? get c => null;
|
|
void set c(C? value) {}
|
|
}
|
|
|
|
class C {}
|
|
|
|
class D extends C {}
|
|
|
|
class E extends C {}
|
|
|
|
// Inferred type: A
|
|
var a = new A();
|
|
|
|
// Inferred type: C?
|
|
var x = a.b.c;
|
|
|
|
// Inferred type: C
|
|
var y = a.b.c ??= new D();
|
|
|
|
test() {
|
|
// Verify the types of x and y by trying to assign to them.
|
|
|
|
|
|
|
|
|
|
y = new E();
|
|
|
|
}
|
|
|
|
main() {}
|