Martin Kustermann
e5704eacfa
For a class like this:
class A<T> {
T? value;
}
the implicit setter function (`A.value=`) has to check the argument
type.
TEST=language/covariant_field_implicit_setter_test
Change-Id: Ie990b79f631275fb0a7c88ec7d7dd3a82a784148
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/381000
Reviewed-by: Ömer Ağacan <omersa@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>
27 lines
683 B
Dart
27 lines
683 B
Dart
// Copyright (c) 2024, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'package:expect/expect.dart';
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import 'package:expect/variations.dart';
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main() {
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final List<A<Object>> l = [A<int>(), A<String>()];
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final aInt = l[int.parse('0')];
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Expect.isNull(aInt.value);
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aInt.value = 10;
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Expect.equals(10, aInt.value);
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final aString = l[int.parse('1')];
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Expect.isNull(aString.value);
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if (checkedParameters) {
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Expect.throws(() => aString.value = 1);
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Expect.isNull(aString.value);
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}
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}
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class A<T> {
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T? value;
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}
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