79 lines
2.5 KiB
Swift
79 lines
2.5 KiB
Swift
/// All possible configuration errors.
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public enum RuleListError: Error {
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/// The rule list contains more than one configuration for the specified rule.
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case duplicatedConfigurations(rule: Rule.Type)
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}
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/// A list of available SwiftLint rules.
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public struct RuleList {
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/// The rules contained in this list.
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public let list: [String: Rule.Type]
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private let aliases: [String: String]
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// MARK: - Initializers
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/// Creates a `RuleList` by specifying all its rules.
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///
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/// - parameter rules: The rules to be contained in this list.
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public init(rules: Rule.Type...) {
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self.init(rules: rules)
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}
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/// Creates a `RuleList` by specifying all its rules.
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///
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/// - parameter rules: The rules to be contained in this list.
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public init(rules: [Rule.Type]) {
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var tmpList = [String: Rule.Type]()
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var tmpAliases = [String: String]()
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for rule in rules {
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let identifier = rule.description.identifier
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tmpList[identifier] = rule
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for alias in rule.description.deprecatedAliases {
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tmpAliases[alias] = identifier
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}
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tmpAliases[identifier] = identifier
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}
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list = tmpList
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aliases = tmpAliases
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}
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// MARK: - Internal
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internal func configuredRules(with dictionary: [String: Any]) throws -> [Rule] {
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var rules = [String: Rule]()
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for (key, configuration) in dictionary {
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guard let identifier = identifier(for: key), let ruleType = list[identifier] else {
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continue
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}
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guard rules[identifier] == nil else {
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throw RuleListError.duplicatedConfigurations(rule: ruleType)
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}
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do {
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let configuredRule = try ruleType.init(configuration: configuration)
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rules[identifier] = configuredRule
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} catch {
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queuedPrintError("Invalid configuration for '\(identifier)'. Falling back to default.")
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rules[identifier] = ruleType.init()
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}
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}
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for (identifier, ruleType) in list where rules[identifier] == nil {
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rules[identifier] = ruleType.init()
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}
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return Array(rules.values)
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}
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internal func identifier(for alias: String) -> String? {
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return aliases[alias]
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}
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internal func allValidIdentifiers() -> [String] {
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return list.flatMap { _, rule -> [String] in
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rule.description.allIdentifiers
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}
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}
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}
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