Dmitry Stefantsov
11790fe024
Closes #40094. Bug: http://dartbug.com/40094 Change-Id: I3af5258bf0845257915eb090889fde0fdcb96bf9 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/134339 Commit-Queue: Dmitry Stefantsov <dmitryas@google.com> Reviewed-by: Johnni Winther <johnniwinther@google.com>
62 lines
2.2 KiB
Dart
62 lines
2.2 KiB
Dart
// Copyright (c) 2020, 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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class Class {
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int nonNullableField = 0;
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int? nullableField;
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int operator [](int key) => key;
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void operator []=(int key, int value) {}
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Class get nonNullableClass => this;
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Class call() => this;
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NullableIndexClass get nonNullableNullableIndexClass => NullableIndexClass();
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}
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class NullableIndexClass {
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int? operator [](int key) => key;
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void operator []=(int key, int value) {}
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}
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main() {}
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errors(Class? nullableClass, Class nonNullableClass, int? nullableInt,
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int nonNullableInt, NullableIndexClass? nullableNullableIndexClass) {
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-nullableInt; // error
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nullableInt + 2; // error
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nullableClass[nonNullableInt]; // error
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nullableClass[nonNullableInt] = nonNullableInt; // error
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nullableClass[nonNullableInt] += nonNullableInt; // error
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nullableNullableIndexClass[nonNullableInt] ??= nonNullableInt; // error
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nullableClass?.nonNullableClass[nonNullableInt]; // ok
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nullableClass?.nonNullableClass[nonNullableInt] = nonNullableInt; // ok
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nullableClass?.nonNullableClass[nonNullableInt] += nonNullableInt; // ok
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nullableClass?.nonNullableNullableIndexClass[nonNullableInt] ??=
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nonNullableInt; // ok
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nullableClass.nonNullableField; // error
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nullableClass.nonNullableField = 2; // error
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nullableClass.nonNullableField += 2; // error
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nullableClass?.nonNullableField; // ok
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nullableClass?.nonNullableField = 2; // ok
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nullableClass?.nonNullableField += 2; // ok
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nullableClass?.nonNullableClass.nonNullableField; // ok
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nullableClass?.nonNullableClass.nonNullableField = 2; // ok
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nonNullableClass.nullableField += 2; // error
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nullableClass?.nullableField += 2; // error
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nullableClass?.nonNullableField ??= 0; // ok
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nullableClass?.nullableField ??= 0; // ok
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nullableClass?.nonNullableClass.nonNullableField ??= 0; // ok
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nullableClass?.nonNullableClass.nullableField ??= 0; // ok
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nullableClass(); // error
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nonNullableClass(); // ok
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nonNullableClass?.nonNullableClass(); // ok
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nonNullableClass?.nonNullableClass.nonNullableClass(); // ok
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}
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