OLD | NEW |
1 // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2015, 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 analyzer.src.plugin.options; | 5 library analyzer.src.plugin.options; |
6 | 6 |
7 import 'package:analyzer/plugin/options.dart'; | 7 import 'package:analyzer/plugin/options.dart'; |
8 import 'package:plugin/plugin.dart'; | 8 import 'package:plugin/plugin.dart'; |
9 | 9 |
10 /// A plugin that defines the extension points and extensions that are defined | 10 /// A plugin that defines the extension points and extensions that are defined |
11 /// by applications that want to consume options defined in the analysis | 11 /// by applications that want to consume options defined in the analysis |
12 /// options file. | 12 /// options file. |
13 class OptionsPlugin implements Plugin { | 13 class OptionsPlugin implements Plugin { |
14 /// The simple identifier of the extension point that allows plugins to | 14 /// The simple identifier of the extension point that allows plugins to |
15 /// register new options processors. | 15 /// register new options processors. |
16 static const String OPTIONS_PROCESSOR_EXTENSION_POINT = 'optionsProcessor'; | 16 static const String OPTIONS_PROCESSOR_EXTENSION_POINT = 'optionsProcessor'; |
17 | 17 |
18 /// The unique identifier of this plugin. | 18 /// The unique identifier of this plugin. |
19 static const String UNIQUE_IDENTIFIER = 'options.core'; | 19 static const String UNIQUE_IDENTIFIER = 'options.core'; |
20 | 20 |
21 /// The extension point that allows plugins to register new options processors
. | 21 /// The extension point that allows plugins to register new options processors
. |
22 ExtensionPoint optionsProcessorExtensionPoint; | 22 ExtensionPoint optionsProcessorExtensionPoint; |
23 | 23 |
24 /// All contributed options processors. | 24 /// All contributed options processors. |
25 List<OptionsProcessor> get optionsProcessors => | 25 List<OptionsProcessor> get optionsProcessors => |
26 optionsProcessorExtensionPoint.extensions; | 26 optionsProcessorExtensionPoint == null |
| 27 ? const [] |
| 28 : optionsProcessorExtensionPoint.extensions; |
27 | 29 |
28 @override | 30 @override |
29 String get uniqueIdentifier => UNIQUE_IDENTIFIER; | 31 String get uniqueIdentifier => UNIQUE_IDENTIFIER; |
30 | 32 |
31 @override | 33 @override |
32 void registerExtensionPoints(RegisterExtensionPoint registerExtensionPoint) { | 34 void registerExtensionPoints(RegisterExtensionPoint registerExtensionPoint) { |
33 optionsProcessorExtensionPoint = registerExtensionPoint( | 35 optionsProcessorExtensionPoint = registerExtensionPoint( |
34 OPTIONS_PROCESSOR_EXTENSION_POINT, _validateOptionsProcessorExtension); | 36 OPTIONS_PROCESSOR_EXTENSION_POINT, _validateOptionsProcessorExtension); |
35 } | 37 } |
36 | 38 |
37 @override | 39 @override |
38 void registerExtensions(RegisterExtension registerExtension) { | 40 void registerExtensions(RegisterExtension registerExtension) { |
39 // There are no default extensions. | 41 // There are no default extensions. |
40 } | 42 } |
41 | 43 |
42 /// Validate the given extension by throwing an [ExtensionError] if it is not
a | 44 /// Validate the given extension by throwing an [ExtensionError] if it is not
a |
43 /// valid options processor. | 45 /// valid options processor. |
44 void _validateOptionsProcessorExtension(Object extension) { | 46 void _validateOptionsProcessorExtension(Object extension) { |
45 if (extension is! OptionsProcessor) { | 47 if (extension is! OptionsProcessor) { |
46 String id = optionsProcessorExtensionPoint.uniqueIdentifier; | 48 String id = optionsProcessorExtensionPoint.uniqueIdentifier; |
47 throw new ExtensionError('Extensions to $id must be an OptionsProcessor'); | 49 throw new ExtensionError('Extensions to $id must be an OptionsProcessor'); |
48 } | 50 } |
49 } | 51 } |
50 } | 52 } |
OLD | NEW |