Robert Nystrom
361cf93984
Change-Id: I5cfab9212bb78809967de323b60ebb06913b84d1 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/425149 Auto-Submit: Bob Nystrom <rnystrom@google.com> Reviewed-by: Lasse Nielsen <lrn@google.com> Commit-Queue: Lasse Nielsen <lrn@google.com>
41 lines
1.1 KiB
Dart
41 lines
1.1 KiB
Dart
// Copyright (c) 2023, 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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// Test 'weak-tearoff-reference' pragma on tear-offs,
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// which results are passed to Function.apply.
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import "package:expect/expect.dart";
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typedef FF = int Function({int x, int y});
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typedef GG = FF Function();
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@pragma('weak-tearoff-reference')
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GG? weakRef(GG? x) => x;
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FF foo1() =>
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({int x = 100, int y = 10}) => 1000 + x + y;
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FF foo2() =>
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({int x = 200, int y = 20}) => 2000 + x + y;
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FF foo3() =>
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({int x = 300, int y = 30}) => 3000 + x + y;
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main() {
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print(foo1()());
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print(foo2()());
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// No call to foo3(), should be removed.
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final f1 = foo1;
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Expect.isNotNull(f1);
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Expect.equals(101010, Function.apply(f1(), [], {#x: 100000}));
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final f2 = weakRef(foo2);
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Expect.isNotNull(f2);
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Expect.equals(202020, Function.apply(f2!(), [], {#x: 200000}));
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final f3 = weakRef(foo3);
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Expect.isNull(f3);
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if (f3 != null) print(Function.apply(f3(), [], {#x: 300000}));
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}
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