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Side by Side Diff: sdk/lib/async/async_error.dart

Issue 2878553003: Use Null argument for callback arity check in async_error (Closed)
Patch Set: Created 3 years, 7 months ago
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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 dart.async; 5 part of dart.async;
6 6
7 _invokeErrorHandler( 7 _invokeErrorHandler(
8 Function errorHandler, Object error, StackTrace stackTrace) { 8 Function errorHandler, Object error, StackTrace stackTrace) {
9 if (errorHandler is ZoneBinaryCallback) { 9 if (errorHandler is ZoneBinaryCallback<dynamic, Null, Null>) {
10 return errorHandler(error, stackTrace); 10 return (errorHandler as dynamic)(error, stackTrace);
11 } else { 11 } else {
12 ZoneUnaryCallback unaryErrorHandler = errorHandler; 12 ZoneUnaryCallback unaryErrorHandler = errorHandler;
13 return unaryErrorHandler(error); 13 return unaryErrorHandler(error);
14 } 14 }
15 } 15 }
16 16
17 Function _registerErrorHandler<R>(Function errorHandler, Zone zone) { 17 Function _registerErrorHandler<R>(Function errorHandler, Zone zone) {
18 if (errorHandler is ZoneBinaryCallback) { 18 if (errorHandler is ZoneBinaryCallback<dynamic, Null, Null>) {
19 return zone.registerBinaryCallback<R, Object, StackTrace>( 19 return zone.registerBinaryCallback<R, Object, StackTrace>(
20 errorHandler as dynamic/*=ZoneBinaryCallback<R, Object, StackTrace>*/); 20 errorHandler as dynamic/*=ZoneBinaryCallback<R, Object, StackTrace>*/);
21 } else { 21 } else {
22 return zone.registerUnaryCallback<R, Object>( 22 return zone.registerUnaryCallback<R, Object>(
23 errorHandler as dynamic/*=ZoneUnaryCallback<R, Object>*/); 23 errorHandler as dynamic/*=ZoneUnaryCallback<R, Object>*/);
24 } 24 }
25 } 25 }
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