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analysis_options.dart
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analysis_options.dart
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import 'dart:io';
import 'package:analyzer/dart/analysis/analysis_context.dart';
import 'package:analyzer/dart/analysis/uri_converter.dart';
import 'package:path/path.dart' as p;
import 'package:yaml/yaml.dart';
import '../../utils/yaml_utils.dart';
import '../analysis_options_utils.dart';
const _analysisOptionsFileName = 'analysis_options.yaml';
/// Class representing dart analysis options.
class AnalysisOptions {
final Map<String, Object> options;
final String? _path;
const AnalysisOptions(this._path, this.options);
String? get folderPath {
final finalPath = _path;
return finalPath == null ? null : p.dirname(finalPath);
}
Iterable<String> readIterableOfString(Iterable<String> pathSegments) {
Object? data = options;
for (final key in pathSegments) {
if (data is Map<String, Object> && data.containsKey(key)) {
data = data[key];
} else {
return [];
}
}
return isIterableOfStrings(data) ? (data as Iterable).cast<String>() : [];
}
Map<String, Object> readMap(Iterable<String> pathSegments) {
Object? data = options;
for (final key in pathSegments) {
if (data is Map<String, Object?> && data.containsKey(key)) {
data = data[key];
} else {
return {};
}
}
return data is Map<String, Object> ? data : {};
}
Map<String, Map<String, Object>> readMapOfMap(Iterable<String> pathSegments) {
Object? data = options;
for (final key in pathSegments) {
if (data is Map<String, Object?> && data.containsKey(key)) {
data = data[key];
} else {
return {};
}
}
if (data is Iterable<Object>) {
return Map.unmodifiable(Map<String, Map<String, Object>>.fromEntries(
data.fold([], (previousValue, element) {
if (element is String) {
return [...previousValue, MapEntry(element, <String, Object>{})];
}
if (element is Map<String, Object>) {
final hasSingleKey = element.keys.length == 1;
final value = element.values.first;
if (hasSingleKey && value is Map<String, Object> || value is bool) {
final updatedValue = value is bool
? <String, Object>{'enabled': value}
: value as Map<String, Object>;
return [
...previousValue,
MapEntry(element.keys.first, updatedValue),
];
}
}
return previousValue;
}),
)..removeWhere((key, value) =>
(value['enabled'] is bool && value['enabled'] == false)));
} else if (data is Map<String, Object>) {
final rulesNode = data;
return Map.unmodifiable(Map<String, Map<String, Object>>.fromEntries([
...rulesNode.entries
.where((entry) => entry.value is bool && entry.value as bool)
.map((entry) => MapEntry(entry.key, {})),
...rulesNode.keys.where((key) {
final node = rulesNode[key];
return node is Map<String, Object>;
}).map((key) => MapEntry(key, rulesNode[key] as Map<String, Object>)),
]));
}
return {};
}
}
AnalysisOptions? analysisOptionsFromContext(
AnalysisContext context,
) {
final optionsFilePath = context.contextRoot.optionsFile?.path;
return optionsFilePath == null
? null
: analysisOptionsFromFile(File(optionsFilePath), context);
}
AnalysisOptions analysisOptionsFromFilePath(
String path,
AnalysisContext context,
) {
final analysisOptionsFile = File(p.absolute(path, _analysisOptionsFileName));
return analysisOptionsFromFile(analysisOptionsFile, context);
}
AnalysisOptions analysisOptionsFromFile(
File? options,
AnalysisContext context,
) =>
options != null && options.existsSync()
? AnalysisOptions(
options.path,
_loadConfigFromYamlFile(
options,
context.currentSession.uriConverter,
),
)
: const AnalysisOptions(null, {});
Map<String, Object> _loadConfigFromYamlFile(
File options,
UriConverter converter,
) {
try {
final node = options.existsSync()
? loadYamlNode(options.readAsStringSync())
: YamlMap();
var optionsNode =
node is YamlMap ? yamlMapToDartMap(node) : <String, Object>{};
final includeNode = optionsNode['include'];
if (includeNode is String) {
final packageImport = includeNode.startsWith('package:');
final resolvedUri = packageImport
? converter.uriToPath(Uri.parse(includeNode))
: p.absolute(p.dirname(options.path), includeNode);
if (resolvedUri != null) {
final resolvedYamlMap =
_loadConfigFromYamlFile(File(resolvedUri), converter);
optionsNode =
mergeMaps(defaults: resolvedYamlMap, overrides: optionsNode);
}
}
return optionsNode;
} on YamlException catch (e) {
throw FormatException(e.message, e.span);
}
}