Dmitry Stefantsov
c1a401c5da
Closes #44641. Closes #44246. Bug: https://github.com/dart-lang/sdk/issues/44641 Bug: https://github.com/dart-lang/sdk/issues/44246 Change-Id: I78cb0514a57ab3adafb3639b09ea8930791da030 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/179340 Commit-Queue: Dmitry Stefantsov <dmitryas@google.com> Reviewed-by: Johnni Winther <johnniwinther@google.com>
99 lines
4.2 KiB
Dart
99 lines
4.2 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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import 'dart:async';
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import 'constant_null_is_lib.dart';
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final bool isWeakMode = const <Null>[] is List<Object>;
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const c0 = null is int?;
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const c1 = null is int;
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const c2 = null is Null;
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const c3 = null is Never?;
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const c4 = null is Never;
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const c5 = null is FutureOr<int?>;
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const c6 = null is FutureOr<int>;
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const c7 = null is FutureOr<int>?;
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const c8 = null is FutureOr<Null>;
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const c9 = null is FutureOr<Null>?;
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const c10 = null is FutureOr<Never>;
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const c11 = null is FutureOr<Never?>;
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const c12 = null is FutureOr<Never>?;
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const e1 = const Class<int>.constructor1(null);
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const e2 = const Class<List<int>>.constructor1(<Null>[null]);
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const e3 = const Class<Null>.constructor1(null);
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const e4 = const Class<int>.constructor2(null);
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const e5 = const Class<int?>.constructor2(null);
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const e6 = const Class<Null>.constructor2(null);
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const e7 = const Class<int>.constructor3(null);
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const e8 = const Class<int?>.constructor3(null);
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const e9 = const Class<Null>.constructor3(null);
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const e10 = const Class<int>.constructor4(null);
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const e11 = const Class<int?>.constructor4(null);
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const e12 = const Class<Null>.constructor4(null);
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class Class<T> {
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final bool field;
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const Class.constructor1(value) : field = value is T;
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const Class.constructor2(value) : field = value is T?;
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const Class.constructor3(value) : field = value is Class<T>;
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const Class.constructor4(value) : field = value is Class<T>?;
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}
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main() {
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expect(null is int?, c0, "null is int?");
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expect(null is int, c1, "null is int");
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expect(null is Null, c2, "null is Null");
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expect(null is Never?, c3, "null is Never?");
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expect(null is Never, c4, "null is Never");
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expect(null is FutureOr<int?>, c5, "null is FutureOr<int?>");
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expect(null is FutureOr<int>, c6, "null is FutureOr<int>");
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expect(null is FutureOr<int>?, c7, "null is FutureOr<int>?");
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expect(null is FutureOr<Null>, c8, "null is FutureOr<Null>");
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expect(null is FutureOr<Null>?, c9, "null is FutureOr<Null>?");
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expect(null is FutureOr<Never>, c10, "null is FutureOr<Never>");
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expect(null is FutureOr<Never?>, c11, "null is FutureOr<Never?>");
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expect(null is FutureOr<Never>?, c12, "null is FutureOr<Never>?");
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expect(new Class<int>.constructor1(null).field, e1.field,
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"Class<int>.constructor1(null).field");
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expect(true, new Class<int?>.constructor1(null).field,
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"new Class<int?>.constructor1(null).field");
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// const Class<List<int>> is evaluated as const Class<List<int*>*> in weak
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// mode:
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expect(isWeakMode, e2.field,
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"const Class<List<int>>.constructor1(<Null>[null]).field");
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expect(new Class<Null>.constructor1(null).field, e3.field,
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"Class<Null>.constructor1(null).field");
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expect(new Class<int>.constructor2(null).field, e4.field,
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"Class<int>.constructor2(null).field");
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expect(true, new Class<int?>.constructor2(null).field,
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"new Class<int?>.constructor2(null).field");
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// const Class<int?> is evaluated as const Class<int?> in weak mode:
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expect(new Class<int?>.constructor2(null).field, e5.field,
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"Class<int?>.constructor2(null).field");
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expect(new Class<Null>.constructor2(null).field, e6.field,
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"Class<Null>.constructor2(null).field");
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expect(new Class<int>.constructor3(null).field, e7.field,
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"Class<int>.constructor3(null).field");
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expect(new Class<int?>.constructor3(null).field, e8.field,
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"Class<int?>.constructor3(null).field");
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expect(new Class<int?>.constructor3(null).field, e8.field,
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"Class<int?>.constructor3(null).field");
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expect(new Class<Null>.constructor3(null).field, e9.field,
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"Class<Null>.constructor3(null).field");
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expect(new Class<int>.constructor4(null).field, e10.field,
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"Class<int>.constructor4(null).field");
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expect(new Class<int?>.constructor4(null).field, e11.field,
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"Class<int?>.constructor4(null).field");
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expect(new Class<Null>.constructor4(null).field, e12.field,
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"Class<Null>.constructor4(null).field");
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test();
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}
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expect(expected, actual, String message) {
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if (expected != actual)
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throw 'Expected $expected, actual $actual for $message';
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}
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