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| 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2014, 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 library dart2js.js_emitter.main_call_stub_generator; | 5 library dart2js.js_emitter.main_call_stub_generator; |
| 6 | 6 |
| 7 import 'package:js_runtime/shared/embedded_names.dart' as embeddedNames; | 7 import 'package:js_runtime/shared/embedded_names.dart' as embeddedNames; |
| 8 | 8 |
| 9 import '../common_elements.dart'; | 9 import '../common_elements.dart'; |
| 10 import '../elements/entities.dart'; | 10 import '../elements/entities.dart'; |
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| 42 mainCallClosure = _emitter.staticFunctionAccess(main); | 42 mainCallClosure = _emitter.staticFunctionAccess(main); |
| 43 } | 43 } |
| 44 | 44 |
| 45 jsAst.Expression currentScriptAccess = | 45 jsAst.Expression currentScriptAccess = |
| 46 _emitter.generateEmbeddedGlobalAccess(embeddedNames.CURRENT_SCRIPT); | 46 _emitter.generateEmbeddedGlobalAccess(embeddedNames.CURRENT_SCRIPT); |
| 47 | 47 |
| 48 // This code finds the currently executing script by listening to the | 48 // This code finds the currently executing script by listening to the |
| 49 // onload event of all script tags and getting the first script which | 49 // onload event of all script tags and getting the first script which |
| 50 // finishes. Since onload is called immediately after execution this should | 50 // finishes. Since onload is called immediately after execution this should |
| 51 // not substantially change execution order. | 51 // not substantially change execution order. |
| 52 return js.statement( | 52 return js.statement(''' |
| 53 ''' | |
| 54 (function (callback) { | 53 (function (callback) { |
| 55 if (typeof document === "undefined") { | 54 if (typeof document === "undefined") { |
| 56 callback(null); | 55 callback(null); |
| 57 return; | 56 return; |
| 58 } | 57 } |
| 59 // When running as a content-script of a chrome-extension the | 58 // When running as a content-script of a chrome-extension the |
| 60 // 'currentScript' is `null` (but not undefined). | 59 // 'currentScript' is `null` (but not undefined). |
| 61 if (typeof document.currentScript != 'undefined') { | 60 if (typeof document.currentScript != 'undefined') { |
| 62 callback(document.currentScript); | 61 callback(document.currentScript); |
| 63 return; | 62 return; |
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| 74 scripts[i].addEventListener("load", onLoad, false); | 73 scripts[i].addEventListener("load", onLoad, false); |
| 75 } | 74 } |
| 76 })(function(currentScript) { | 75 })(function(currentScript) { |
| 77 #currentScript = currentScript; | 76 #currentScript = currentScript; |
| 78 | 77 |
| 79 if (typeof dartMainRunner === "function") { | 78 if (typeof dartMainRunner === "function") { |
| 80 dartMainRunner(#mainCallClosure, []); | 79 dartMainRunner(#mainCallClosure, []); |
| 81 } else { | 80 } else { |
| 82 #mainCallClosure([]); | 81 #mainCallClosure([]); |
| 83 } | 82 } |
| 84 })''', | 83 })''', { |
| 85 { | 84 'currentScript': currentScriptAccess, |
| 86 'currentScript': currentScriptAccess, | 85 'mainCallClosure': mainCallClosure |
| 87 'mainCallClosure': mainCallClosure | 86 }); |
| 88 }); | |
| 89 } | 87 } |
| 90 } | 88 } |
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