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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.source.analysis_options_provider; | 5 library analyzer.source.analysis_options_provider; |
6 | 6 |
7 import 'dart:core'; | 7 import 'dart:core'; |
8 | 8 |
9 import 'package:analyzer/file_system/file_system.dart'; | 9 import 'package:analyzer/file_system/file_system.dart'; |
10 import 'package:analyzer/src/generated/engine.dart'; | 10 import 'package:analyzer/src/generated/engine.dart'; |
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23 | 23 |
24 AnalysisOptionsProvider([this.sourceFactory]); | 24 AnalysisOptionsProvider([this.sourceFactory]); |
25 | 25 |
26 /// Provide the options found in either | 26 /// Provide the options found in either |
27 /// [root]/[AnalysisEngine.ANALYSIS_OPTIONS_FILE] or | 27 /// [root]/[AnalysisEngine.ANALYSIS_OPTIONS_FILE] or |
28 /// [root]/[AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE]. | 28 /// [root]/[AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE]. |
29 /// Recursively merge options referenced by an include directive | 29 /// Recursively merge options referenced by an include directive |
30 /// and remove the include directive from the resulting options map. | 30 /// and remove the include directive from the resulting options map. |
31 /// Return an empty options map if the file does not exist. | 31 /// Return an empty options map if the file does not exist. |
32 Map<String, YamlNode> getOptions(Folder root, {bool crawlUp: false}) { | 32 Map<String, YamlNode> getOptions(Folder root, {bool crawlUp: false}) { |
33 return getOptionsFromFile(getOptionsFile(root, crawlUp: crawlUp)); | 33 File optionsFile = getOptionsFile(root, crawlUp: crawlUp); |
| 34 if (optionsFile == null) { |
| 35 return const <String, YamlNode>{}; |
| 36 } |
| 37 return getOptionsFromFile(optionsFile); |
34 } | 38 } |
35 | 39 |
36 /// Return the analysis options file from which options should be read, or | 40 /// Return the analysis options file from which options should be read, or |
37 /// `null` if there is no analysis options file for code in the given [root]. | 41 /// `null` if there is no analysis options file for code in the given [root]. |
38 /// | 42 /// |
39 /// The given [root] directory will be searched first. If no file is found and | 43 /// The given [root] directory will be searched first. If no file is found and |
40 /// if [crawlUp] is `true`, then enclosing directories will be searched. | 44 /// if [crawlUp] is `true`, then enclosing directories will be searched. |
41 File getOptionsFile(Folder root, {bool crawlUp: false}) { | 45 File getOptionsFile(Folder root, {bool crawlUp: false}) { |
42 Resource resource = null; | 46 Resource resource = null; |
43 for (Folder folder = root; folder != null; folder = folder.parent) { | 47 for (Folder folder = root; folder != null; folder = folder.parent) { |
44 resource = folder.getChild(AnalysisEngine.ANALYSIS_OPTIONS_FILE); | 48 resource = folder.getChild(AnalysisEngine.ANALYSIS_OPTIONS_FILE); |
45 if (resource.exists) { | 49 if (resource.exists) { |
46 break; | 50 break; |
47 } | 51 } |
48 resource = folder.getChild(AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE); | 52 resource = folder.getChild(AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE); |
49 if (resource.exists || !crawlUp) { | 53 if (resource.exists || !crawlUp) { |
50 break; | 54 break; |
51 } | 55 } |
52 } | 56 } |
53 return resource is File ? resource : null; | 57 if (resource is File && resource.exists) { |
| 58 return resource; |
| 59 } |
| 60 return null; |
54 } | 61 } |
55 | 62 |
56 /// Provide the options found in [file]. | 63 /// Provide the options found in [file]. |
57 /// Recursively merge options referenced by an include directive | 64 /// Recursively merge options referenced by an include directive |
58 /// and remove the include directive from the resulting options map. | 65 /// and remove the include directive from the resulting options map. |
59 /// Return an empty options map if the file does not exist. | 66 /// Return an empty options map if the file does not exist. |
60 Map<String, YamlNode> getOptionsFromFile(File file) { | 67 Map<String, YamlNode> getOptionsFromFile(File file) { |
61 return getOptionsFromSource(new FileSource(file)); | 68 return getOptionsFromSource(new FileSource(file)); |
62 } | 69 } |
63 | 70 |
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165 /// Thrown on options format exceptions. | 172 /// Thrown on options format exceptions. |
166 class OptionsFormatException implements Exception { | 173 class OptionsFormatException implements Exception { |
167 final String message; | 174 final String message; |
168 final SourceSpan span; | 175 final SourceSpan span; |
169 OptionsFormatException(this.message, [this.span]); | 176 OptionsFormatException(this.message, [this.span]); |
170 | 177 |
171 @override | 178 @override |
172 String toString() => | 179 String toString() => |
173 'OptionsFormatException: ${message?.toString()}, ${span?.toString()}'; | 180 'OptionsFormatException: ${message?.toString()}, ${span?.toString()}'; |
174 } | 181 } |
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