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598018bd21
Moving the construction of ?? into the parser using LetNode, so that the await-transformations are properly applied.
a ?? b becomes { temp = a; temp !== null ? temp : b; }
a ??= b becomes { temp = a; temp != null ? temp : a = b; }
BUG=issue #24392
R=hausner@google.com
Review URL: https://codereview.chromium.org/1417733007 .
24 lines
524 B
Dart
24 lines
524 B
Dart
// Copyright (c) 2015, 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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// Regression test for issue dartbug.com/24392
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import 'package:expect/expect.dart';
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import 'dart:async';
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Future<int> f() async {
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// Unreachable.
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Expect.isTrue(false);
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}
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main() async {
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int x = 1;
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x ??= await f();
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Expect.equals(1, x);
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int y = 1;
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y = y ?? await f();
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Expect.equals(1, y);
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}
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