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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, 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 /** | 5 /** |
6 * Support for interoperating with JavaScript. | 6 * Support for interoperating with JavaScript. |
7 * | 7 * |
8 * This library provides access to JavaScript objects from Dart, allowing | 8 * This library provides access to JavaScript objects from Dart, allowing |
9 * Dart code to get and set properties, and call methods of JavaScript objects | 9 * Dart code to get and set properties, and call methods of JavaScript objects |
10 * and invoke JavaScript functions. The library takes care of converting | 10 * and invoke JavaScript functions. The library takes care of converting |
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700 } | 700 } |
701 | 701 |
702 _callDartFunctionFast(callback, List arguments) { | 702 _callDartFunctionFast(callback, List arguments) { |
703 return Function.apply(callback, arguments); | 703 return Function.apply(callback, arguments); |
704 } | 704 } |
705 | 705 |
706 _callDartFunctionFastCaptureThis(callback, self, List arguments) { | 706 _callDartFunctionFastCaptureThis(callback, self, List arguments) { |
707 return Function.apply(callback, [self]..addAll(arguments)); | 707 return Function.apply(callback, [self]..addAll(arguments)); |
708 } | 708 } |
709 | 709 |
710 Function /*=F*/ allowInterop/*<F extends Function>*/(Function /*=F*/ f) { | 710 Function/*=F*/ allowInterop/*<F extends Function>*/(Function/*=F*/ f) { |
711 if (JS('bool', 'typeof(#) == "function"', f)) { | 711 if (JS('bool', 'typeof(#) == "function"', f)) { |
712 // Already supports interop, just use the existing function. | 712 // Already supports interop, just use the existing function. |
713 return f; | 713 return f; |
714 } else { | 714 } else { |
715 return _convertDartFunctionFast(f); | 715 return _convertDartFunctionFast(f); |
716 } | 716 } |
717 } | 717 } |
718 | 718 |
719 Function allowInteropCaptureThis(Function f) { | 719 Function allowInteropCaptureThis(Function f) { |
720 if (JS('bool', 'typeof(#) == "function"', f)) { | 720 if (JS('bool', 'typeof(#) == "function"', f)) { |
721 // Behavior when the function is already a JS function is unspecified. | 721 // Behavior when the function is already a JS function is unspecified. |
722 throw new ArgumentError( | 722 throw new ArgumentError( |
723 "Function is already a JS function so cannot capture this."); | 723 "Function is already a JS function so cannot capture this."); |
724 return f; | 724 return f; |
725 } else { | 725 } else { |
726 return _convertDartFunctionFastCaptureThis(f); | 726 return _convertDartFunctionFastCaptureThis(f); |
727 } | 727 } |
728 } | 728 } |
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