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Side by Side Diff: sdk/lib/core/options.dart

Issue 11361190: a === b -> identical(a, b) (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Address comments. Created 8 years, 1 month 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 // Dart core library. 5 // Dart core library.
6 6
7 /** 7 /**
8 * The Options object allows accessing the arguments which have been passed to 8 * The Options object allows accessing the arguments which have been passed to
9 * the current isolate. 9 * the current isolate.
10 */ 10 */
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38 * Returns the path of the script being run in this isolate. 38 * Returns the path of the script being run in this isolate.
39 * 39 *
40 * If the executable environment does not support [script] an empty 40 * If the executable environment does not support [script] an empty
41 * string is returned. 41 * string is returned.
42 */ 42 */
43 String get script; 43 String get script;
44 } 44 }
45 45
46 class _OptionsImpl implements Options { 46 class _OptionsImpl implements Options {
47 List<String> get arguments { 47 List<String> get arguments {
48 if (_arguments === null) { 48 if (_arguments == null) {
49 // On first access make a copy of the native arguments. 49 // On first access make a copy of the native arguments.
50 _arguments = _nativeArguments.getRange(0, _nativeArguments.length); 50 _arguments = _nativeArguments.getRange(0, _nativeArguments.length);
51 } 51 }
52 return _arguments; 52 return _arguments;
53 } 53 }
54 54
55 String get executable { 55 String get executable {
56 return _nativeExecutable; 56 return _nativeExecutable;
57 } 57 }
58 58
59 String get script { 59 String get script {
60 return _nativeScript; 60 return _nativeScript;
61 } 61 }
62 62
63 List<String> _arguments = null; 63 List<String> _arguments = null;
64 64
65 // This arguments singleton is written to by the embedder if applicable. 65 // This arguments singleton is written to by the embedder if applicable.
66 static List<String> _nativeArguments = const []; 66 static List<String> _nativeArguments = const [];
67 67
68 // This executable singleton is written to by the embedder if applicable. 68 // This executable singleton is written to by the embedder if applicable.
69 static String _nativeExecutable = ''; 69 static String _nativeExecutable = '';
70 70
71 // This script singleton is written to by the embedder if applicable. 71 // This script singleton is written to by the embedder if applicable.
72 static String _nativeScript = ''; 72 static String _nativeScript = '';
73 } 73 }
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