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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 part of "async.dart"; | 5 part of "dart:async"; |
6 | 6 |
7 /// A type representing values that are either `Future<T>` or `T`. | 7 /// A type representing values that are either `Future<T>` or `T`. |
8 /// | 8 /// |
9 /// This class declaration is a public stand-in for an internal | 9 /// This class declaration is a public stand-in for an internal |
10 /// future-or-value generic type. References to this class are resolved to the | 10 /// future-or-value generic type. References to this class are resolved to the |
11 /// internal type. | 11 /// internal type. |
12 /// | 12 /// |
13 /// It is a compile-time error for any class to extend, mix in or implement | 13 /// It is a compile-time error for any class to extend, mix in or implement |
14 /// `FutureOr`. | 14 /// `FutureOr`. |
15 /// | 15 /// |
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909 AsyncError replacement = Zone.current.errorCallback(error, stackTrace); | 909 AsyncError replacement = Zone.current.errorCallback(error, stackTrace); |
910 if (replacement != null) { | 910 if (replacement != null) { |
911 error = _nonNullError(replacement.error); | 911 error = _nonNullError(replacement.error); |
912 stackTrace = replacement.stackTrace; | 912 stackTrace = replacement.stackTrace; |
913 } | 913 } |
914 result._asyncCompleteError(error, stackTrace); | 914 result._asyncCompleteError(error, stackTrace); |
915 } | 915 } |
916 | 916 |
917 /** Helper function that converts `null` to a [NullThrownError]. */ | 917 /** Helper function that converts `null` to a [NullThrownError]. */ |
918 Object _nonNullError(Object error) => error ?? new NullThrownError(); | 918 Object _nonNullError(Object error) => error ?? new NullThrownError(); |
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