mirror of
https://github.com/dart-lang/sdk
synced 2024-09-05 08:24:39 +00:00
36a6b1b5ce
The current behavior (removing all outer `FutureOr`s, then calling *flatten* on the result) was never specified as correct behavior. Since Dart 2.0, the await has not recursively flattened futures, so the static analysis behavior did not match run-time behavior. Change-Id: Ie1da323aedb4b0f51e2c1e3eebe84552576c5f37 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/121846 Commit-Queue: Lasse R.H. Nielsen <lrn@google.com> Reviewed-by: Leaf Petersen <leafp@google.com>
55 lines
1.4 KiB
Dart
55 lines
1.4 KiB
Dart
// Copyright (c) 2019, 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 "package:expect/expect.dart";
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import "package:async_helper/async_helper.dart";
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main() async {
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int i = 1;
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Future<int> fi = Future<int>.value(i);
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Future<Future<int>> ffi = Future<Future<int>>.value(fi);
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Future<Future<Future<int>>> fffi = Future<Future<Future<int>>>.value(ffi);
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String v1 = await i;
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// ^
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// [analyzer] unspecified
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// [cfe] unspecified
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String v2 = await fi;
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// ^^
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// [analyzer] unspecified
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// [cfe] unspecified
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int v3 = await ffi;
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// ^^^
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// [analyzer] unspecified
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// [cfe] unspecified
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Future<int> v4 = await fffi;
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// ^^^^
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// [analyzer] unspecified
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// [cfe] unspecified
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Future<int> v5 = await i;
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// ^
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// [analyzer] unspecified
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// [cfe] unspecified
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Future<int> v6 = await fi;
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// ^^
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// [analyzer] unspecified
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// [cfe] unspecified
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Future<FutureOr<int>> v7 = await fi;
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// ^^
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// [analyzer] unspecified
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// [cfe] unspecified
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Future<Future<int>> v8 = await ffi;
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// ^^^
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// [analyzer] unspecified
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// [cfe] unspecified
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}
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