Make tests thread safe

To avoid “Value of type 'JSONDecoder' has no member 'keyDecodingStrategy’”

.gitmodules

@@ -19,3 +19,6 @@
 [submodule "Carthage/Checkouts/Yams"]
 	path = Carthage/Checkouts/Yams
 	url = https://github.com/jpsim/Yams.git
+[submodule "Carthage/Checkouts/BlueSocket"]
+	path = Carthage/Checkouts/BlueSocket
+	url = https://github.com/IBM-Swift/BlueSocket.git

Cartfile.private

@@ -1,3 +1,4 @@
 github "Carthage/Commandant" ~> 0.15.0
+github "IBM-Swift/BlueSocket" ~> 1.0.0
 github "jpsim/Yams" ~> 1.0.1
 github "jspahrsummers/xcconfigs" ~> 0.12.0

Cartfile.resolved

@@ -1,6 +1,7 @@
 github "Carthage/Commandant" "0.15.0"
 github "antitypical/Result" "4.0.0"
 github "drmohundro/SWXMLHash" "4.7.6"
+github "IBM-Swift/BlueSocket" "1.0.43"
 github "jpsim/SourceKitten" "0.22.0"
 github "jpsim/Yams" "1.0.1"
 github "jspahrsummers/xcconfigs" "0.12"

Carthage/Checkouts/BlueSocket

@@ -0,0 +1 @@
+Subproject commit 9c1b578c618f0bfac017aaaaead19de57bb37831

Makefile

@@ -119,7 +119,7 @@ archive:
 release: package archive portable_zip
 
 docker_test:
-	docker run -v `pwd`:`pwd` -w `pwd` --name swiftlint --rm norionomura/swift:42 swift test --parallel
+	docker run -v `pwd`:`pwd` -w `pwd` --name swiftlint --rm norionomura/swift:421 swift test --parallel
 
 docker_htop:
 	docker run -it --rm --pid=container:swiftlint terencewestphal/htop || reset

Package.resolved

@@ -1,6 +1,15 @@
 {
   "object": {
     "pins": [
+      {
+        "package": "Socket",
+        "repositoryURL": "https://github.com/IBM-Swift/BlueSocket.git",
+        "state": {
+          "branch": null,
+          "revision": "9c1b578c618f0bfac017aaaaead19de57bb37831",
+          "version": "1.0.43"
+        }
+      },
       {
         "package": "Commandant",
         "repositoryURL": "https://github.com/Carthage/Commandant.git",

Package.swift

@@ -15,6 +15,7 @@ let package = Package(
     ],
     dependencies: [
         .package(url: "https://github.com/Carthage/Commandant.git", from: "0.15.0"),
+        .package(url: "https://github.com/IBM-Swift/BlueSocket.git", from: "1.0.0"),
         .package(url: "https://github.com/jpsim/SourceKitten.git", from: "0.22.0"),
         .package(url: "https://github.com/jpsim/Yams.git", from: "1.0.1"),
         .package(url: "https://github.com/scottrhoyt/SwiftyTextTable.git", from: "0.8.2"),
@@ -31,6 +32,7 @@ let package = Package(
         .target(
             name: "SwiftLintFramework",
             dependencies: [
+                "Socket",
                 "SourceKittenFramework",
                 "Yams",
             ] + (addCryptoSwift ? ["CryptoSwift"] : [])

Source/SwiftLintFramework/Extensions/Configuration+Merging.swift

@@ -115,7 +115,9 @@ extension Configuration {
             rules: mergingRules(with: configuration),
             cachePath: cachePath, // Always use the parent cache path
             rootPath: configuration.rootPath,
-            indentation: configuration.indentation
+            indentation: configuration.indentation,
+            plugins: plugins,
+            remoteRules: remoteRules
         )
     }
 }

Source/SwiftLintFramework/Extensions/Configuration+Parsing.swift

@@ -13,10 +13,11 @@ extension Configuration {
         case whitelistRules = "whitelist_rules"
         case indentation = "indentation"
         case analyzerRules = "analyzer_rules"
+        case plugins = "plugins"
     }
 
-    private static func validKeys(ruleList: RuleList) -> [String] {
+    private static func validKeys(ruleList: RuleList, remoteRules: [RemoteRule]) -> [String] {
-        return [
+        let globalKeys = [
             Key.cachePath,
             .disabledRules,
             .enabledRules,
@@ -29,8 +30,12 @@ extension Configuration {
             .warningThreshold,
             .whitelistRules,
             .indentation,
-            .analyzerRules
+            .analyzerRules,
-        ].map({ $0.rawValue }) + ruleList.allValidIdentifiers()
+            .plugins
+        ].map { $0.rawValue }
+
+        return globalKeys + ruleList.allValidIdentifiers() +
+            remoteRules.flatMap { $0.ruleDescription.allIdentifiers }
     }
 
     private static func getIndentationLogIfInvalid(from dict: [String: Any]) -> IndentationStyle {
@@ -46,23 +51,23 @@ extension Configuration {
         return .default
     }
 
-    public init?(dict: [String: Any], ruleList: RuleList = masterRuleList, enableAllRules: Bool = false,
+    public init?(dict: [String: Any],
-                 cachePath: String? = nil) {
+                 ruleList: RuleList = masterRuleList,
-        func defaultStringArray(_ object: Any?) -> [String] {
+                 enableAllRules: Bool = false,
-            return [String].array(of: object) ?? []
+                 cachePath: String? = nil,
-        }
+                 remoteRulesResolver: RemoteRuleResolverProtocol = RemoteRuleResolver()) {
-
         // Use either new 'opt_in_rules' or deprecated 'enabled_rules' for now.
         let optInRules = defaultStringArray(
             dict[Key.optInRules.rawValue] ?? dict[Key.enabledRules.rawValue]
         )
 
-        // Log an error when supplying invalid keys in the configuration dictionary
+        let plugins = defaultStringArray(dict[Key.plugins.rawValue])
-        let invalidKeys = Set(dict.keys).subtracting(Configuration.validKeys(ruleList: ruleList))
+        let remoteRules = plugins.compactMap {
-        if !invalidKeys.isEmpty {
+            try? remoteRulesResolver.remoteRule(forExecutable: $0, configuration: dict)
-            queuedPrintError("Configuration contains invalid keys:\n\(invalidKeys)")
         }
 
+        Configuration.validateConfigurationKeys(dict: dict, ruleList: ruleList, remoteRules: remoteRules)
+
         let disabledRules = defaultStringArray(dict[Key.disabledRules.rawValue])
         let whitelistRules = defaultStringArray(dict[Key.whitelistRules.rawValue])
         let analyzerRules = defaultStringArray(dict[Key.analyzerRules.rawValue])
@@ -77,9 +82,7 @@ extension Configuration {
         do {
             configuredRules = try ruleList.configuredRules(with: dict)
         } catch RuleListError.duplicatedConfigurations(let ruleType) {
-            let aliases = ruleType.description.deprecatedAliases.map { "'\($0)'" }.joined(separator: ", ")
+            Configuration.warnAboutDuplicateConfigurations(for: ruleType)
-            let identifier = ruleType.description.identifier
-            queuedPrintError("Multiple configurations found for '\(identifier)'. Check for any aliases: \(aliases).")
             return nil
         } catch {
             return nil
@@ -99,7 +102,9 @@ extension Configuration {
                   configuredRules: configuredRules,
                   swiftlintVersion: swiftlintVersion,
                   cachePath: cachePath ?? dict[Key.cachePath.rawValue] as? String,
-                  indentation: indentation)
+                  indentation: indentation,
+                  plugins: plugins,
+                  remoteRules: remoteRules)
     }
 
     private init?(disabledRules: [String],
@@ -115,7 +120,9 @@ extension Configuration {
                   configuredRules: [Rule]?,
                   swiftlintVersion: String?,
                   cachePath: String?,
-                  indentation: IndentationStyle) {
+                  indentation: IndentationStyle,
+                  plugins: [String],
+                  remoteRules: [RemoteRule]) {
         let rulesMode: RulesMode
         if enableAllRules {
             rulesMode = .allEnabled
@@ -140,7 +147,9 @@ extension Configuration {
                   configuredRules: configuredRules,
                   swiftlintVersion: swiftlintVersion,
                   cachePath: cachePath,
-                  indentation: indentation)
+                  indentation: indentation,
+                  plugins: plugins,
+                  remoteRules: remoteRules)
     }
 
     private static func warnAboutDeprecations(configurationDictionary dict: [String: Any],
@@ -177,4 +186,23 @@ extension Configuration {
                 "completely removed in a future release.")
         }
     }
+
+    private static func warnAboutDuplicateConfigurations(for ruleType: Rule.Type) {
+        let aliases = ruleType.description.deprecatedAliases.map { "'\($0)'" }.joined(separator: ", ")
+        let identifier = ruleType.description.identifier
+        queuedPrintError("Multiple configurations found for '\(identifier)'. Check for any aliases: \(aliases).")
+    }
+
+    private static func validateConfigurationKeys(dict: [String: Any], ruleList: RuleList, remoteRules: [RemoteRule]) {
+        // Log an error when supplying invalid keys in the configuration dictionary
+        let invalidKeys = Set(dict.keys).subtracting(validKeys(ruleList: ruleList,
+                                                               remoteRules: remoteRules))
+        if !invalidKeys.isEmpty {
+            queuedPrintError("Configuration contains invalid keys:\n\(invalidKeys)")
+        }
+    }
+}
+
+private func defaultStringArray(_ object: Any?) -> [String] {
+    return [String].array(of: object) ?? []
 }

Source/SwiftLintFramework/Extensions/QueuedPrint.swift

@@ -40,6 +40,15 @@ public func queuedPrintError(_ string: String) {
     }
 }
 
+/**
+ A thread-safe, newline-terminated version of fputs(..., stderr).
+
+ - parameter error: Error to print.
+ */
+public func queuedPrintError(_ error: Error) {
+    queuedPrintError(error.localizedDescription)
+}
+
 /**
  A thread-safe, newline-terminated version of fatalError that doesn't leak
  the source path from the compiled binary.

Source/SwiftLintFramework/Models/Configuration.swift

@@ -18,6 +18,7 @@ public struct Configuration: Hashable {
     public let excluded: [String]                      // excluded
     public let reporter: String                        // reporter (xcode, json, csv, checkstyle)
     public let warningThreshold: Int?                  // warning threshold
+    public let plugins: [String]
     public private(set) var rootPath: String?          // the root path to search for nested configurations
     public private(set) var configurationPath: String? // if successfully loaded from a path
     public let cachePath: String?
@@ -33,6 +34,7 @@ public struct Configuration: Hashable {
             hasher.combine(included)
             hasher.combine(excluded)
             hasher.combine(reporter)
+            hasher.combine(plugins)
         }
     }
 
@@ -40,9 +42,11 @@ public struct Configuration: Hashable {
 
     // MARK: Rules Properties
 
-    // All rules enabled in this configuration, derived from disabled, opt-in and whitelist rules
+    /// All rules enabled in this configuration, derived from disabled, opt-in and whitelist rules
     public let rules: [Rule]
 
+    internal let remoteRules: [RemoteRule]
+
     internal let rulesMode: RulesMode
 
     // MARK: Initializers
@@ -56,7 +60,10 @@ public struct Configuration: Hashable {
                  configuredRules: [Rule]? = nil,
                  swiftlintVersion: String? = nil,
                  cachePath: String? = nil,
-                 indentation: IndentationStyle = .default) {
+                 indentation: IndentationStyle = .default,
+                 plugins: [String] = [],
+                 remoteRulesResolver: RemoteRuleResolverProtocol = RemoteRuleResolver(),
+                 remoteRules: [RemoteRule]? = nil) {
         if let pinnedVersion = swiftlintVersion, pinnedVersion != Version.current.value {
             queuedPrintError("Currently running SwiftLint \(Version.current.value) but " +
                 "configuration specified version \(pinnedVersion).")
@@ -67,10 +74,15 @@ public struct Configuration: Hashable {
             ?? (try? ruleList.configuredRules(with: [:]))
             ?? []
 
+        let remoteRules = remoteRules ?? plugins.compactMap {
+            try? remoteRulesResolver.remoteRule(forExecutable: $0, configuration: nil)
+        }
+
         let handleAliasWithRuleList: (String) -> String = { ruleList.identifier(for: $0) ?? $0 }
 
-        guard let rules = enabledRules(from: configuredRules,
+        guard let enabledRules = enabledRules(from: configuredRules,
                                               with: rulesMode,
+                                              remoteRules: remoteRules,
                                               aliasResolver: handleAliasWithRuleList) else {
             return nil
         }
@@ -80,9 +92,11 @@ public struct Configuration: Hashable {
                   excluded: excluded,
                   warningThreshold: warningThreshold,
                   reporter: reporter,
-                  rules: rules,
+                  rules: enabledRules.0,
                   cachePath: cachePath,
-                  indentation: indentation)
+                  indentation: indentation,
+                  plugins: plugins,
+                  remoteRules: enabledRules.1)
     }
 
     internal init(rulesMode: RulesMode,
@@ -93,7 +107,9 @@ public struct Configuration: Hashable {
                   rules: [Rule],
                   cachePath: String?,
                   rootPath: String? = nil,
-                  indentation: IndentationStyle) {
+                  indentation: IndentationStyle,
+                  plugins: [String],
+                  remoteRules: [RemoteRule]) {
         self.rulesMode = rulesMode
         self.included = included
         self.excluded = excluded
@@ -102,6 +118,8 @@ public struct Configuration: Hashable {
         self.rules = rules
         self.rootPath = rootPath
         self.indentation = indentation
+        self.plugins = plugins
+        self.remoteRules = remoteRules
 
         // set the config threshold to the threshold provided in the config file
         self.warningThreshold = warningThreshold
@@ -117,6 +135,8 @@ public struct Configuration: Hashable {
         cachePath = configuration.cachePath
         rootPath = configuration.rootPath
         indentation = configuration.indentation
+        plugins = configuration.plugins
+        remoteRules = configuration.remoteRules
     }
 
     public init(path: String = Configuration.fileName, rootPath: String? = nil,
@@ -176,7 +196,8 @@ public struct Configuration: Hashable {
             (lhs.included == rhs.included) &&
             (lhs.excluded == rhs.excluded) &&
             (lhs.rules == rhs.rules) &&
-            (lhs.indentation == rhs.indentation)
+            (lhs.indentation == rhs.indentation) &&
+            (lhs.plugins == rhs.plugins)
     }
 }
 
@@ -213,12 +234,13 @@ private func containsDuplicateIdentifiers(_ identifiers: [String]) -> Bool {
 
 private func enabledRules(from configuredRules: [Rule],
                           with mode: Configuration.RulesMode,
-                          aliasResolver: (String) -> String) -> [Rule]? {
+                          remoteRules: [RemoteRule],
-    let validRuleIdentifiers = configuredRules.map { type(of: $0).description.identifier }
+                          aliasResolver: (String) -> String) -> ([Rule], [RemoteRule])? {
+    let validRuleIdentifiers = configuredRules.map { type(of: $0).description.identifier } + remoteRules.identifiers
 
     switch mode {
     case .allEnabled:
-        return configuredRules
+        return (configuredRules, remoteRules)
     case .whitelisted(let whitelistedRuleIdentifiers):
         let validWhitelistedRuleIdentifiers = validateRuleIdentifiers(
             ruleIdentifiers: whitelistedRuleIdentifiers.map(aliasResolver),
@@ -227,9 +249,15 @@ private func enabledRules(from configuredRules: [Rule],
         if containsDuplicateIdentifiers(validWhitelistedRuleIdentifiers) {
             return nil
         }
-        return configuredRules.filter { rule in
+
+        let whitelistedRules = configuredRules.filter { rule in
             return validWhitelistedRuleIdentifiers.contains(type(of: rule).description.identifier)
         }
+        let whitelistedRemoteRules = remoteRules.filter { rule in
+            return validWhitelistedRuleIdentifiers.contains(rule.ruleDescription.identifier)
+        }
+
+        return (whitelistedRules, whitelistedRemoteRules)
     case let .default(disabledRuleIdentifiers, optInRuleIdentifiers):
         let validDisabledRuleIdentifiers = validateRuleIdentifiers(
             ruleIdentifiers: disabledRuleIdentifiers.map(aliasResolver),
@@ -242,11 +270,19 @@ private func enabledRules(from configuredRules: [Rule],
             || containsDuplicateIdentifiers(validOptInRuleIdentifiers) {
             return nil
         }
-        return configuredRules.filter { rule in
+
+        let enabledRules = configuredRules.filter { rule in
             let id = type(of: rule).description.identifier
             if validDisabledRuleIdentifiers.contains(id) { return false }
             return validOptInRuleIdentifiers.contains(id) || !(rule is OptInRule)
         }
+
+        let enabledRemoteRules = remoteRules.filter { rule in
+            let id = rule.ruleDescription.identifier
+            return !validDisabledRuleIdentifiers.contains(id)
+        }
+
+        return (enabledRules, enabledRemoteRules)
     }
 }
 

Source/SwiftLintFramework/Models/Lazy.swift

@@ -0,0 +1,9 @@
+// extracted from https://forums.swift.org/t/pitch-declaring-local-variables-as-lazy/9287/3
+internal class Lazy<Result> {
+    private var computation: () -> Result
+    private(set) lazy var value: Result = computation()
+
+    init(_ computation: @escaping @autoclosure () -> Result) {
+        self.computation = computation
+    }
+}

Source/SwiftLintFramework/Models/Linter.swift

@@ -7,8 +7,75 @@ private struct LintResult {
     let deprecatedToValidIDPairs: [(String, String)]
 }
 
-private extension Rule {
+private enum LintableBox {
-    static func superfluousDisableCommandViolations(regions: [Region],
+    case rule(Rule)
+    case remoteRule(RemoteRule)
+
+    private var ruleDescription: RuleDescription {
+        switch self {
+        case .rule(let rule):
+            return type(of: rule).description
+        case .remoteRule(let remoteRule):
+            return remoteRule.ruleDescription
+        }
+    }
+
+    func lint(file: File, regions: [Region], benchmark: Bool,
+              superfluousDisableCommandRule: SuperfluousDisableCommandRule?,
+              compilerArguments: [String]) -> LintResult? {
+        let lintResultBeforeDisableCommand: LintResult?
+        switch self {
+        case .rule(let rule):
+            lintResultBeforeDisableCommand = rule.lint(file: file, regions: regions, benchmark: benchmark,
+                                                       compilerArguments: compilerArguments)
+        case .remoteRule(let remoteRule):
+            lintResultBeforeDisableCommand = remoteRule.lint(file: file, regions: regions, benchmark: benchmark,
+                                                             compilerArguments: compilerArguments)
+        }
+
+        guard let lintResult = lintResultBeforeDisableCommand else {
+            return nil
+        }
+
+        let violations = lintResult.violations
+        let (disabledViolationsAndRegions, enabledViolationsAndRegions) = violations.map { violation in
+            return (violation, regions.first { $0.contains(violation.location) })
+        }.partitioned { _, region in
+            return region?.isRuleEnabled(ruleDescription) ?? true
+        }
+
+        let ruleIDs = ruleDescription.allIdentifiers +
+            (superfluousDisableCommandRule.map({ type(of: $0) })?.description.allIdentifiers ?? [])
+        let ruleIdentifiers = Set(ruleIDs.map { RuleIdentifier($0) })
+
+        let superfluousDisableCommandViolations = ruleDescription.superfluousDisableCommandViolations(
+            regions: regions.count > 1 ? file.regions(restrictingRuleIdentifiers: ruleIdentifiers) : regions,
+            superfluousDisableCommandRule: superfluousDisableCommandRule,
+            allViolations: violations
+        )
+
+        let enabledViolations: [StyleViolation]
+        if file.contents.hasPrefix("#!") { // if a violation happens on the same line as a shebang, ignore it
+            enabledViolations = enabledViolationsAndRegions.compactMap { violation, _ in
+                if violation.location.line == 1 { return nil }
+                return violation
+            }
+        } else {
+            enabledViolations = enabledViolationsAndRegions.map { $0.0 }
+        }
+        let deprecatedToValidIDPairs = disabledViolationsAndRegions.flatMap { _, region -> [(String, String)] in
+            let identifiers = region?.deprecatedAliasesDisabling(ruleDescription: ruleDescription) ?? []
+            return identifiers.map { ($0, ruleDescription.identifier) }
+        }
+
+        return LintResult(violations: enabledViolations + superfluousDisableCommandViolations,
+                          ruleTime: lintResult.ruleTime,
+                          deprecatedToValidIDPairs: deprecatedToValidIDPairs)
+    }
+}
+
+private extension RuleDescription {
+    func superfluousDisableCommandViolations(regions: [Region],
                                              superfluousDisableCommandRule: SuperfluousDisableCommandRule?,
                                              allViolations: [StyleViolation]) -> [StyleViolation] {
         guard !regions.isEmpty, let superfluousDisableCommandRule = superfluousDisableCommandRule else {
@@ -16,7 +83,7 @@ private extension Rule {
         }
 
         let regionsDisablingCurrentRule = regions.filter { region in
-            return region.isRuleDisabled(self.init())
+            return region.isRuleDisabled(self)
         }
         let regionsDisablingSuperflousDisableRule = regions.filter { region in
             return region.isRuleDisabled(superfluousDisableCommandRule)
@@ -43,9 +110,10 @@ private extension Rule {
             )
         }
     }
+}
 
+private extension Rule {
     func lint(file: File, regions: [Region], benchmark: Bool,
-              superfluousDisableCommandRule: SuperfluousDisableCommandRule?,
               compilerArguments: [String]) -> LintResult? {
         if !(self is SourceKitFreeRule) && file.sourcekitdFailed {
             return nil
@@ -64,38 +132,29 @@ private extension Rule {
             ruleTime = nil
         }
 
-        let (disabledViolationsAndRegions, enabledViolationsAndRegions) = violations.map { violation in
+        return LintResult(violations: violations, ruleTime: ruleTime,
-            return (violation, regions.first { $0.contains(violation.location) })
+                          deprecatedToValidIDPairs: [])
-        }.partitioned { _, region in
+    }
-            return region?.isRuleEnabled(self) ?? true
 }
 
-        let ruleIDs = Self.description.allIdentifiers +
+private extension RemoteRule {
-            (superfluousDisableCommandRule.map({ type(of: $0) })?.description.allIdentifiers ?? [])
+    func lint(file: File, regions: [Region], benchmark: Bool,
-        let ruleIdentifiers = Set(ruleIDs.map { RuleIdentifier($0) })
+              compilerArguments: [String]) -> LintResult? {
+        let ruleID = ruleDescription.identifier
 
-        let superfluousDisableCommandViolations = Self.superfluousDisableCommandViolations(
+        let violations: [StyleViolation]
-            regions: regions.count > 1 ? file.regions(restrictingRuleIdentifiers: ruleIdentifiers) : regions,
+        let ruleTime: (String, Double)?
-            superfluousDisableCommandRule: superfluousDisableCommandRule,
+        if benchmark {
-            allViolations: violations
+            let start = Date()
-        )
+            violations = validate(file: file)
-
+            ruleTime = (ruleID, -start.timeIntervalSinceNow)
-        let enabledViolations: [StyleViolation]
-        if file.contents.hasPrefix("#!") { // if a violation happens on the same line as a shebang, ignore it
-            enabledViolations = enabledViolationsAndRegions.compactMap { violation, _ in
-                if violation.location.line == 1 { return nil }
-                return violation
-            }
         } else {
-            enabledViolations = enabledViolationsAndRegions.map { $0.0 }
+            violations = validate(file: file)
-        }
+            ruleTime = nil
-        let deprecatedToValidIDPairs = disabledViolationsAndRegions.flatMap { _, region -> [(String, String)] in
-            let identifiers = region?.deprecatedAliasesDisabling(rule: self) ?? []
-            return identifiers.map { ($0, ruleID) }
         }
 
-        return LintResult(violations: enabledViolations + superfluousDisableCommandViolations, ruleTime: ruleTime,
+        return LintResult(violations: violations, ruleTime: ruleTime,
-                          deprecatedToValidIDPairs: deprecatedToValidIDPairs)
+                          deprecatedToValidIDPairs: [])
     }
 }
 
@@ -105,6 +164,7 @@ public struct Linter {
     private let cache: LinterCache?
     private let configuration: Configuration
     private let compilerArguments: [String]
+    private let remoteRules: [RemoteRule]
 
     public var styleViolations: [StyleViolation] {
         return getStyleViolations().0
@@ -126,7 +186,9 @@ public struct Linter {
         let superfluousDisableCommandRule = rules.first(where: {
             $0 is SuperfluousDisableCommandRule
         }) as? SuperfluousDisableCommandRule
-        let validationResults = rules.parallelCompactMap {
+
+        let lintables = remoteRules.map(LintableBox.remoteRule) + rules.map(LintableBox.rule)
+        let validationResults = lintables.parallelCompactMap {
             $0.lint(file: self.file, regions: regions, benchmark: benchmark,
                     superfluousDisableCommandRule: superfluousDisableCommandRule,
                     compilerArguments: self.compilerArguments)
@@ -184,6 +246,7 @@ public struct Linter {
                 return rule is AnalyzerRule
             }
         }
+        self.remoteRules = configuration.remoteRules
     }
 
     public func correct() -> [Correction] {

Source/SwiftLintFramework/Models/PluginDescription.swift

@@ -0,0 +1,23 @@
+public enum PluginRequiredInput: String, Codable {
+    case syntaxMap = "syntax_map"
+    case structure = "structure"
+}
+
+public struct PluginDescription: Equatable, Codable {
+    public let ruleDescription: RuleDescription
+    public let requiredInformation: Set<PluginRequiredInput>
+
+    public init(ruleDescription: RuleDescription,
+                requiredInformation: Set<PluginRequiredInput> = []) {
+        self.ruleDescription = ruleDescription
+        self.requiredInformation = requiredInformation
+    }
+
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+
+        self.ruleDescription = try container.decode(RuleDescription.self, forKey: .ruleDescription)
+        self.requiredInformation = try container.decodeIfPresent(Set<PluginRequiredInput>.self,
+                                                                 forKey: .requiredInformation) ?? []
+    }
+}

Source/SwiftLintFramework/Models/Region.swift

@@ -13,22 +13,34 @@ public struct Region: Equatable {
         return start <= location && end >= location
     }
 
+    public func isRuleEnabled(_ ruleDescription: RuleDescription) -> Bool {
+        return !isRuleDisabled(ruleDescription)
+    }
+
+    public func isRuleDisabled(_ ruleDescription: RuleDescription) -> Bool {
+        guard !disabledRuleIdentifiers.contains(.all) else {
+            return true
+        }
+
+        let identifiersToCheck = ruleDescription.allIdentifiers
+        let regionIdentifiers = Set(disabledRuleIdentifiers.map { $0.stringRepresentation })
+        return !regionIdentifiers.isDisjoint(with: identifiersToCheck)
+    }
+
     public func isRuleEnabled(_ rule: Rule) -> Bool {
         return !isRuleDisabled(rule)
     }
 
     public func isRuleDisabled(_ rule: Rule) -> Bool {
-        guard !disabledRuleIdentifiers.contains(.all) else {
+        return isRuleDisabled(type(of: rule).description)
-            return true
     }
 
-        let identifiersToCheck = type(of: rule).description.allIdentifiers
+    public func deprecatedAliasesDisabling(ruleDescription: RuleDescription) -> Set<String> {
-        let regionIdentifiers = Set(disabledRuleIdentifiers.map { $0.stringRepresentation })
+        let identifiers = ruleDescription.deprecatedAliases
-        return !regionIdentifiers.isDisjoint(with: identifiersToCheck)
+        return Set(disabledRuleIdentifiers.map { $0.stringRepresentation }).intersection(identifiers)
     }
 
     public func deprecatedAliasesDisabling(rule: Rule) -> Set<String> {
-        let identifiers = type(of: rule).description.deprecatedAliases
+        return deprecatedAliasesDisabling(ruleDescription: type(of: rule).description)
-        return Set(disabledRuleIdentifiers.map { $0.stringRepresentation }).intersection(identifiers)
     }
 }

Source/SwiftLintFramework/Models/RemoteLintServer.swift

@@ -0,0 +1,119 @@
+import Dispatch
+import Foundation
+import Socket
+
+protocol RemoteLintServerDelegate: AnyObject {
+    func server(_ server: RemoteLintServer, didReceivePayload payload: RemoteRulePayload) -> [StyleViolation]
+    func serverStartedListening(_ server: RemoteLintServer)
+}
+
+final class RemoteLintServer {
+    private let socketPath: String
+    private var listenSocket: Socket?
+    private var continueRunning = true
+    private var connectedSockets = [Int32: Socket]()
+    private let socketLockQueue = DispatchQueue(label: "io.realm.swiftlint.remoteLintServer")
+
+    weak var delegate: RemoteLintServerDelegate?
+
+    init(socketPath: String) {
+        self.socketPath = socketPath
+    }
+
+    deinit {
+        for socket in connectedSockets.values {
+            socket.close()
+        }
+        listenSocket?.close()
+    }
+
+    func run() {
+        let queue = DispatchQueue.global(qos: .userInteractive)
+        queue.async { [unowned self] in
+            do {
+                let socket = try Socket.create(family: .unix, type: .stream, proto: .unix)
+                socket.readBufferSize = 65_507
+                self.listenSocket = socket
+
+                try socket.listen(on: self.socketPath)
+
+                self.delegate?.serverStartedListening(self)
+
+                repeat {
+                    let newSocket = try socket.acceptClientConnection()
+                    self.addNewConnection(socket: newSocket)
+                } while self.continueRunning
+            } catch {
+                queuedPrintError(error)
+            }
+        }
+    }
+
+    private func addNewConnection(socket: Socket) {
+        socketLockQueue.sync { [unowned self, socket] in
+            self.connectedSockets[socket.socketfd] = socket
+        }
+
+        let queue = DispatchQueue.global(qos: .default)
+        queue.async { [unowned self, socket] in
+            var shouldKeepRunning = true
+            var readData = Data()
+
+            do {
+                repeat {
+                    let bytesRead = try socket.read(into: &readData)
+
+                    if bytesRead > 0 {
+                        guard let json = (try? JSONSerialization.jsonObject(with: readData)) as? [String: Any],
+                            let payload = RemoteRulePayload(json: json) else {
+                                readData.count = 0
+                                break
+                        }
+
+                        let violations = self.delegate?.server(self, didReceivePayload: payload) ?? []
+                        let data = try JSONSerialization.data(withJSONObject: violations.map { $0.toPluginJSON() })
+                        try socket.write(from: data)
+                    }
+
+                    if bytesRead == 0 {
+                        shouldKeepRunning = false
+                        break
+                    }
+
+                    readData.count = 0
+                } while shouldKeepRunning
+
+                socket.close()
+
+                self.socketLockQueue.sync { [unowned self, socket] in
+                    self.connectedSockets[socket.socketfd] = nil
+                }
+            } catch {
+                queuedPrintError(error)
+            }
+        }
+    }
+
+    func shutdown() {
+        continueRunning = false
+
+        for socket in connectedSockets.values {
+            socket.close()
+        }
+
+        listenSocket?.close()
+    }
+}
+
+private extension StyleViolation {
+    func toPluginJSON() -> [String: Any] {
+        return [
+            "severity": severity.rawValue,
+            "location": [
+                "line": location.line ?? 1,
+                "character": location.character ?? 1
+            ],
+            "reason": reason
+        ]
+    }
+}

Source/SwiftLintFramework/Models/RemoteRule.swift

@@ -0,0 +1,79 @@
+import Foundation
+import Socket
+import SourceKittenFramework
+
+public final class RemoteRule {
+    public let description: PluginDescription
+    public let configuration: Any?
+
+    public var ruleDescription: RuleDescription {
+        return description.ruleDescription
+    }
+
+    public init(description: PluginDescription, configuration: Any?) {
+        self.description = description
+        self.configuration = configuration
+    }
+
+    public func validate(file: File) -> [StyleViolation] {
+        let payload = RemoteRulePayload(structure: Lazy(file.structure.dictionary),
+                                        syntaxMap: Lazy(file.syntaxMap.tokens),
+                                        path: file.path,
+                                        contents: Lazy(file.contents),
+                                        configuration: configuration)
+        return validate(payload: payload, file: file)
+    }
+
+    private func validate(payload: RemoteRulePayload, file: File) -> [StyleViolation] {
+        do {
+            let socket = try Socket.create(family: .unix, type: .stream, proto: .unix)
+            try socket.connect(to: "/tmp/\(ruleDescription.identifier).socket")
+
+            let data = try payload.asJSONData(input: description.requiredInformation)
+            try socket.write(from: data)
+
+            var readData = Data()
+            _ = try socket.read(into: &readData)
+
+            guard let json = try JSONSerialization.jsonObject(with: readData) as? [[String: Any]] else {
+                return []
+            }
+
+            return json.compactMap { dictionary -> StyleViolation? in
+                let severity = (dictionary["severity"] as? String).flatMap(ViolationSeverity.init) ?? .warning
+                guard let location = Location(file: file, json: dictionary) else {
+                    return nil
+                }
+
+                return StyleViolation(ruleDescription: ruleDescription,
+                                      severity: severity,
+                                      location: location,
+                                      reason: dictionary["reason"] as? String)
+            }
+        } catch {
+            queuedPrintError(error)
+            return []
+        }
+    }
+}
+
+internal extension Array where Element == RemoteRule {
+    var identifiers: [String] {
+        return map { $0.ruleDescription.identifier }
+    }
+}
+
+private extension Location {
+    init?(file: File, json: [String: Any]) {
+        if let byteOffset = json["byte_offset"] as? Int {
+            self = Location(file: file, byteOffset: byteOffset)
+        } else if let characterOffset = json["character_offset"] as? Int {
+            self = Location(file: file, characterOffset: characterOffset)
+        } else if let location = json["location"] as? [String: Int],
+            let line = location["line"] {
+            self = Location(file: file.path, line: line, character: location["character"] ?? 1)
+        } else {
+            return nil
+        }
+    }
+}

Source/SwiftLintFramework/Models/RemoteRulePayload.swift

@@ -0,0 +1,81 @@
+import Foundation
+import SourceKittenFramework
+
+internal struct RemoteRulePayload {
+    let structure: Lazy<[String: SourceKitRepresentable]>
+    let syntaxMap: Lazy<[SyntaxToken]>
+    let path: String?
+    let contents: Lazy<String?>
+    let configuration: Any?
+
+    func asJSONData(input: Set<PluginRequiredInput>) throws -> Data {
+        return try JSONSerialization.data(withJSONObject: asJSONDictionary(input: input))
+    }
+
+    func asJSONDictionary(input: Set<PluginRequiredInput>) -> [String: Any] {
+        var json = [String: Any]()
+        if input.contains(.structure) {
+            json["structure"] = structure.value
+        }
+        if input.contains(.syntaxMap) {
+            json["syntax_map"] = syntaxMap.value.map { $0.dictionaryValue }
+        }
+
+        json["path"] = path
+        json["configuration"] = configuration
+        if path == nil {
+            json["contents"] = contents.value
+        }
+
+        return json
+    }
+}
+
+extension RemoteRulePayload {
+    init?(json: [String: Any]) {
+        let rawStructure = json["structure"]
+        let structure = rawStructure.map(convertingIntsToInt64) as? [String: SourceKitRepresentable] ?? [:]
+        let syntaxMap = (json["syntax_map"] as? [[String: Any]])?.compactMap(SyntaxToken.init(json:)) ?? []
+        let path = json["path"] as? String
+        let contents = json["contents"] as? String
+        let configuration = json["configuration"]
+
+        if path == nil && contents == nil {
+            return nil
+        }
+
+        self.init(structure: Lazy(structure), syntaxMap: Lazy(syntaxMap),
+                  path: path, contents: Lazy(contents), configuration: configuration)
+    }
+}
+
+private func convertingIntsToInt64(value: Any) -> Any {
+    switch value {
+    case let value as Int:
+        return Int64(value)
+    case let values as [Any]:
+        return values.map(convertingIntsToInt64)
+    case let values as [String: Any]:
+        return values.mapValues(convertingIntsToInt64)
+    case let value as String:
+        return value
+    case let value as Int64:
+        return value
+    case let value as Bool:
+        return value
+    default:
+        return value
+    }
+}
+
+private extension SyntaxToken {
+    init?(json: [String: Any]) {
+        guard let type = json["type"] as? String,
+            let offset = json["offset"] as? Int,
+            let length = json["length"] as? Int else {
+                return nil
+        }
+
+        self.init(type: type, offset: offset, length: length)
+    }
+}

Source/SwiftLintFramework/Models/RemoteRuleResolver.swift

@@ -0,0 +1,31 @@
+import Foundation
+
+public protocol RemoteRuleResolverProtocol {
+    func remoteRule(forExecutable executable: String,
+                    configuration: [String: Any]?) throws -> RemoteRule
+}
+
+public final class RemoteRuleResolver: RemoteRuleResolverProtocol {
+    public init() {}
+
+    public func remoteRule(forExecutable executable: String,
+                           configuration: [String: Any]?) throws -> RemoteRule {
+        let task = Process()
+        task.launchPath = executable
+        task.arguments = ["plugin_description"]
+
+        let pipe = Pipe()
+        task.standardOutput = pipe
+
+        task.launch()
+
+        let file = pipe.fileHandleForReading
+        defer { file.closeFile() }
+
+        let decoder = JSONDecoder()
+        decoder.keyDecodingStrategy = .convertFromSnakeCase
+        let description = try decoder.decode(PluginDescription.self, from: file.readDataToEndOfFile())
+        return RemoteRule(description: description,
+                          configuration: configuration?[description.ruleDescription.identifier])
+    }
+}

Source/SwiftLintFramework/Models/RuleDescription.swift

@@ -1,4 +1,4 @@
-public struct RuleDescription: Equatable {
+public struct RuleDescription: Equatable, Codable {
     public let identifier: String
     public let name: String
     public let description: String
@@ -39,4 +39,31 @@ public struct RuleDescription: Equatable {
     public static func == (lhs: RuleDescription, rhs: RuleDescription) -> Bool {
         return lhs.identifier == rhs.identifier
     }
+
+    // MARK: Codable
+
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+
+        self.identifier = try container.decode(String.self, forKey: .identifier)
+        self.name = try container.decode(String.self, forKey: .name)
+        self.description = try container.decode(String.self, forKey: .description)
+        self.kind = try container.decode(RuleKind.self, forKey: .kind)
+        self.nonTriggeringExamples = container.optionalDecode([String].self, forKey: .nonTriggeringExamples) ?? []
+        self.triggeringExamples = container.optionalDecode([String].self, forKey: .triggeringExamples) ?? []
+        self.corrections = container.optionalDecode([String: String].self, forKey: .corrections) ?? [:]
+        self.deprecatedAliases = container.optionalDecode(Set<String>.self, forKey: .deprecatedAliases) ?? []
+        self.minSwiftVersion = container.optionalDecode(SwiftVersion.self, forKey: .minSwiftVersion) ?? .three
+        self.requiresFileOnDisk = container.optionalDecode(Bool.self, forKey: .requiresFileOnDisk) ?? false
+    }
+}
+
+private extension KeyedDecodingContainerProtocol {
+    func optionalDecode<T>(_ type: T.Type, forKey key: KeyedDecodingContainer<Key>.Key) -> T? where T: Decodable {
+        do {
+            return try decodeIfPresent(type, forKey: key)
+        } catch {
+            return nil
+        }
+    }
 }

Source/SwiftLintFramework/Models/RuleKind.swift

@@ -1,4 +1,4 @@
-public enum RuleKind: String {
+public enum RuleKind: String, Codable {
     case lint
     case idiomatic
     case style

Source/SwiftLintFramework/Models/SwiftVersion.swift

@@ -1,7 +1,7 @@
 import Foundation
 import SourceKittenFramework
 
-public struct SwiftVersion: RawRepresentable {
+public struct SwiftVersion: RawRepresentable, Codable {
     public typealias RawValue = String
 
     public let rawValue: String

Source/SwiftLintFramework/Rules/Lint/SuperfluousDisableCommandRule.swift

@@ -18,8 +18,8 @@ public struct SuperfluousDisableCommandRule: ConfigurationProviderRule {
         return []
     }
 
-    public func reason(for rule: Rule.Type) -> String {
+    public func reason(for ruleDescription: RuleDescription) -> String {
-        return "SwiftLint rule '\(rule.description.identifier)' did not trigger a violation " +
+        return "SwiftLint rule '\(ruleDescription.identifier)' did not trigger a violation " +
                "in the disabled region. Please remove the disable command."
     }
 }

Source/SwiftLintFramework/Rules/Metrics/LineLengthRule.swift

@@ -124,16 +124,6 @@ public struct LineLengthRule: ConfigurationProviderRule {
     }
 }
 
-// extracted from https://forums.swift.org/t/pitch-declaring-local-variables-as-lazy/9287/3
-private class Lazy<Result> {
-    private var computation: () -> Result
-    fileprivate private(set) lazy var value: Result = computation()
-
-    init(_ computation: @escaping @autoclosure () -> Result) {
-        self.computation = computation
-    }
-}
-
 private extension String {
     var strippingURLs: String {
         let range = NSRange(location: 0, length: bridge().length)

Source/swiftlint/Extensions/Configuration+CommandLine.swift

@@ -163,6 +163,16 @@ extension Configuration {
         return LintableFilesVisitor.create(options, cache: cache, block: visitorBlock).flatMap(visitLintableFiles)
     }
 
+    func startPlugins() -> [Process] {
+        return plugins.map { executable in
+            let task = Process()
+            task.launchPath = executable
+            task.arguments = ["lint"]
+            task.launch()
+            return task
+        }
+    }
+
     // MARK: AutoCorrect Command
 
     init(options: AutoCorrectOptions) {

Source/swiftlint/Helpers/LintOrAnalyzeCommand.swift

@@ -27,6 +27,8 @@ struct LintOrAnalyzeCommand {
         let reporter = reporterFrom(optionsReporter: options.reporter, configuration: configuration)
         let cache = options.ignoreCache ? nil : LinterCache(configuration: configuration)
         let visitorMutationQueue = DispatchQueue(label: "io.realm.swiftlint.lintVisitorMutation")
+        let pluginsProcesses = configuration.startPlugins()
+
         return configuration.visitLintableFiles(options: options, cache: cache) { linter in
             let currentViolations: [StyleViolation]
             if options.benchmark {
@@ -47,8 +49,7 @@ struct LintOrAnalyzeCommand {
             linter.file.invalidateCache()
             reporter.report(violations: currentViolations, realtimeCondition: true)
         }.flatMap { files in
-            if isWarningThresholdBroken(configuration: configuration, violations: violations)
+            if isWarningThresholdBroken(configuration: configuration, violations: violations) && !options.lenient {
-                && !options.lenient {
                 violations.append(createThresholdViolation(threshold: configuration.warningThreshold!))
                 reporter.report(violations: [violations.last!], realtimeCondition: true)
             }
@@ -63,6 +64,7 @@ struct LintOrAnalyzeCommand {
                 ruleBenchmark.save()
             }
             try? cache?.save()
+            pluginsProcesses.forEach { $0.terminate() }
             return successOrExit(numberOfSeriousViolations: numberOfSeriousViolations,
                                  strictWithViolations: options.strict && !violations.isEmpty)
         }

SwiftLint.xcodeproj/project.pbxproj

@@ -224,6 +224,8 @@
 		D4130D991E16CC1300242361 /* TypeNameRuleExamples.swift in Sources */ = {isa = PBXBuildFile; fileRef = D4130D981E16CC1300242361 /* TypeNameRuleExamples.swift */; };
 		D414D6AC21D0B77F00960935 /* DiscouragedObjectLiteralRuleTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D414D6AB21D0B77F00960935 /* DiscouragedObjectLiteralRuleTests.swift */; };
 		D414D6AE21D22FF500960935 /* LastWhereRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = D414D6AD21D22FF500960935 /* LastWhereRule.swift */; };
+		D414D6B021D34FA500960935 /* RemoteRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = D414D6AF21D34FA500960935 /* RemoteRule.swift */; };
+		D414D6B221D3509B00960935 /* RemoteRuleResolver.swift in Sources */ = {isa = PBXBuildFile; fileRef = D414D6B121D3509B00960935 /* RemoteRuleResolver.swift */; };
 		D41B57781ED8CEE0007B0470 /* ExtensionAccessModifierRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = D41B57771ED8CEE0007B0470 /* ExtensionAccessModifierRule.swift */; };
 		D41E7E0B1DF9DABB0065259A /* RedundantStringEnumValueRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = D41E7E0A1DF9DABB0065259A /* RedundantStringEnumValueRule.swift */; };
 		D4246D6D1F30D8620097E658 /* PrivateOverFilePrivateRuleConfiguration.swift in Sources */ = {isa = PBXBuildFile; fileRef = D4246D6C1F30D8620097E658 /* PrivateOverFilePrivateRuleConfiguration.swift */; };
@@ -236,6 +238,7 @@
 		D43B04661E071ED3004016AF /* ColonRuleTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D43B04651E071ED3004016AF /* ColonRuleTests.swift */; };
 		D43B04691E072291004016AF /* ColonConfiguration.swift in Sources */ = {isa = PBXBuildFile; fileRef = D43B04671E07228D004016AF /* ColonConfiguration.swift */; };
 		D43B046B1E075905004016AF /* ClosureEndIndentationRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = D43B046A1E075905004016AF /* ClosureEndIndentationRule.swift */; };
+		D43CD01721D4AFD200944FAC /* Socket.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = D43CD01621D4AFD200944FAC /* Socket.framework */; };
 		D43DB1081DC573DA00281215 /* ImplicitGetterRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = D43DB1071DC573DA00281215 /* ImplicitGetterRule.swift */; };
 		D44037972132730000FDA77B /* ProhibitedInterfaceBuilderRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = D44037962132730000FDA77B /* ProhibitedInterfaceBuilderRule.swift */; };
 		D44254201DB87CA200492EA4 /* ValidIBInspectableRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = D442541E1DB87C3D00492EA4 /* ValidIBInspectableRule.swift */; };
@@ -256,6 +259,10 @@
 		D47079AB1DFDCF7A00027086 /* SwiftExpressionKind.swift in Sources */ = {isa = PBXBuildFile; fileRef = D47079AA1DFDCF7A00027086 /* SwiftExpressionKind.swift */; };
 		D47079AD1DFE2FA700027086 /* EmptyParametersRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = D47079AC1DFE2FA700027086 /* EmptyParametersRule.swift */; };
 		D47079AF1DFE520000027086 /* VoidReturnRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = D47079AE1DFE520000027086 /* VoidReturnRule.swift */; };
+		D47820C621D8B3ED00F24836 /* ConfigurationTests+Plugins.swift in Sources */ = {isa = PBXBuildFile; fileRef = D47820C521D8B3ED00F24836 /* ConfigurationTests+Plugins.swift */; };
+		D47820C821D8CBC000F24836 /* PluginDescription.swift in Sources */ = {isa = PBXBuildFile; fileRef = D47820C721D8CBC000F24836 /* PluginDescription.swift */; };
+		D47820CA21D8CD2C00F24836 /* Lazy.swift in Sources */ = {isa = PBXBuildFile; fileRef = D47820C921D8CD2C00F24836 /* Lazy.swift */; };
+		D47820CD21D9FA7100F24836 /* RemoteRuleResolverTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D47820CB21D9FA5B00F24836 /* RemoteRuleResolverTests.swift */; };
 		D47A510E1DB29EEB00A4CC21 /* SwitchCaseOnNewlineRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = D47A510D1DB29EEB00A4CC21 /* SwitchCaseOnNewlineRule.swift */; };
 		D47A51101DB2DD4800A4CC21 /* AttributesRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = D47A510F1DB2DD4800A4CC21 /* AttributesRule.swift */; };
 		D47EF4801F69E3100012C4CA /* ColonRule+FunctionCall.swift in Sources */ = {isa = PBXBuildFile; fileRef = D47EF47F1F69E3100012C4CA /* ColonRule+FunctionCall.swift */; };
@@ -267,6 +274,9 @@
 		D48B51231F4F5E4B0068AB98 /* DocumentationTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D48B51221F4F5E4B0068AB98 /* DocumentationTests.swift */; };
 		D495B1A221165DAA00E2CD7B /* FileNameRuleFixtures in Resources */ = {isa = PBXBuildFile; fileRef = D495B1A021165DAA00E2CD7B /* FileNameRuleFixtures */; };
 		D495B1A321165DAA00E2CD7B /* FileHeaderRuleFixtures in Resources */ = {isa = PBXBuildFile; fileRef = D495B1A121165DAA00E2CD7B /* FileHeaderRuleFixtures */; };
+		D496009221DF32D700520803 /* RemoteLintServer.swift in Sources */ = {isa = PBXBuildFile; fileRef = D496009121DF32D700520803 /* RemoteLintServer.swift */; };
+		D496009421DF376B00520803 /* RemoteRulePayload.swift in Sources */ = {isa = PBXBuildFile; fileRef = D496009321DF376B00520803 /* RemoteRulePayload.swift */; };
+		D496009621DF39DF00520803 /* RemoteRuleTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D496009521DF39DF00520803 /* RemoteRuleTests.swift */; };
 		D49896F12026B36C00814A83 /* RedundantSetAccessControlRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = D49896F02026B36C00814A83 /* RedundantSetAccessControlRule.swift */; };
 		D4998DE71DF191380006E05D /* AttributesRuleTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D4998DE61DF191380006E05D /* AttributesRuleTests.swift */; };
 		D4998DE91DF194F20006E05D /* FileHeaderRuleTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D4998DE81DF194F20006E05D /* FileHeaderRuleTests.swift */; };
@@ -288,6 +298,7 @@
 		D4C889711E385B7B00BAE88D /* RedundantDiscardableLetRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = D4C889701E385B7B00BAE88D /* RedundantDiscardableLetRule.swift */; };
 		D4CA758F1E2DEEA500A40E8A /* NumberSeparatorRuleTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D4CA758E1E2DEEA500A40E8A /* NumberSeparatorRuleTests.swift */; };
 		D4CFC5D2209EC95A00668488 /* FunctionDefaultParameterAtEndRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = D4CFC5D1209EC95A00668488 /* FunctionDefaultParameterAtEndRule.swift */; };
+		D4D11B1D21D8AE2300FB9D93 /* RuleDescriptionTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D4D11B1C21D8AE2300FB9D93 /* RuleDescriptionTests.swift */; };
 		D4D1B9BB1EAC2C910028BE6A /* AccessControlLevel.swift in Sources */ = {isa = PBXBuildFile; fileRef = D4D1B9B91EAC2C870028BE6A /* AccessControlLevel.swift */; };
 		D4D383852145F550000235BD /* StaticOperatorRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = D4D383842145F550000235BD /* StaticOperatorRule.swift */; };
 		D4D5A5FF1E1F3A1C00D15E0C /* ShorthandOperatorRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = D4D5A5FE1E1F3A1C00D15E0C /* ShorthandOperatorRule.swift */; };
@@ -678,6 +689,8 @@
 		D4130D981E16CC1300242361 /* TypeNameRuleExamples.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = TypeNameRuleExamples.swift; sourceTree = "<group>"; };
 		D414D6AB21D0B77F00960935 /* DiscouragedObjectLiteralRuleTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DiscouragedObjectLiteralRuleTests.swift; sourceTree = "<group>"; };
 		D414D6AD21D22FF500960935 /* LastWhereRule.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LastWhereRule.swift; sourceTree = "<group>"; };
+		D414D6AF21D34FA500960935 /* RemoteRule.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RemoteRule.swift; sourceTree = "<group>"; };
+		D414D6B121D3509B00960935 /* RemoteRuleResolver.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RemoteRuleResolver.swift; sourceTree = "<group>"; };
 		D41B57771ED8CEE0007B0470 /* ExtensionAccessModifierRule.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ExtensionAccessModifierRule.swift; sourceTree = "<group>"; };
 		D41E7E0A1DF9DABB0065259A /* RedundantStringEnumValueRule.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = RedundantStringEnumValueRule.swift; sourceTree = "<group>"; };
 		D4246D6C1F30D8620097E658 /* PrivateOverFilePrivateRuleConfiguration.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = PrivateOverFilePrivateRuleConfiguration.swift; sourceTree = "<group>"; };
@@ -690,6 +703,7 @@
 		D43B04651E071ED3004016AF /* ColonRuleTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ColonRuleTests.swift; sourceTree = "<group>"; };
 		D43B04671E07228D004016AF /* ColonConfiguration.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ColonConfiguration.swift; sourceTree = "<group>"; };
 		D43B046A1E075905004016AF /* ClosureEndIndentationRule.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ClosureEndIndentationRule.swift; sourceTree = "<group>"; };
+		D43CD01621D4AFD200944FAC /* Socket.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; path = Socket.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		D43DB1071DC573DA00281215 /* ImplicitGetterRule.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ImplicitGetterRule.swift; sourceTree = "<group>"; };
 		D44037962132730000FDA77B /* ProhibitedInterfaceBuilderRule.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ProhibitedInterfaceBuilderRule.swift; sourceTree = "<group>"; };
 		D442541E1DB87C3D00492EA4 /* ValidIBInspectableRule.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ValidIBInspectableRule.swift; sourceTree = "<group>"; };
@@ -710,6 +724,10 @@
 		D47079AA1DFDCF7A00027086 /* SwiftExpressionKind.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = SwiftExpressionKind.swift; sourceTree = "<group>"; };
 		D47079AC1DFE2FA700027086 /* EmptyParametersRule.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = EmptyParametersRule.swift; sourceTree = "<group>"; };
 		D47079AE1DFE520000027086 /* VoidReturnRule.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = VoidReturnRule.swift; sourceTree = "<group>"; };
+		D47820C521D8B3ED00F24836 /* ConfigurationTests+Plugins.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "ConfigurationTests+Plugins.swift"; sourceTree = "<group>"; };
+		D47820C721D8CBC000F24836 /* PluginDescription.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PluginDescription.swift; sourceTree = "<group>"; };
+		D47820C921D8CD2C00F24836 /* Lazy.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Lazy.swift; sourceTree = "<group>"; };
+		D47820CB21D9FA5B00F24836 /* RemoteRuleResolverTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RemoteRuleResolverTests.swift; sourceTree = "<group>"; };
 		D47A510D1DB29EEB00A4CC21 /* SwitchCaseOnNewlineRule.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = SwitchCaseOnNewlineRule.swift; sourceTree = "<group>"; };
 		D47A510F1DB2DD4800A4CC21 /* AttributesRule.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AttributesRule.swift; sourceTree = "<group>"; };
 		D47EF47F1F69E3100012C4CA /* ColonRule+FunctionCall.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "ColonRule+FunctionCall.swift"; sourceTree = "<group>"; };
@@ -721,6 +739,9 @@
 		D48B51221F4F5E4B0068AB98 /* DocumentationTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = DocumentationTests.swift; sourceTree = "<group>"; };
 		D495B1A021165DAA00E2CD7B /* FileNameRuleFixtures */ = {isa = PBXFileReference; lastKnownFileType = folder; path = FileNameRuleFixtures; sourceTree = "<group>"; };
 		D495B1A121165DAA00E2CD7B /* FileHeaderRuleFixtures */ = {isa = PBXFileReference; lastKnownFileType = folder; path = FileHeaderRuleFixtures; sourceTree = "<group>"; };
+		D496009121DF32D700520803 /* RemoteLintServer.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RemoteLintServer.swift; sourceTree = "<group>"; };
+		D496009321DF376B00520803 /* RemoteRulePayload.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RemoteRulePayload.swift; sourceTree = "<group>"; };
+		D496009521DF39DF00520803 /* RemoteRuleTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RemoteRuleTests.swift; sourceTree = "<group>"; };
 		D49896F02026B36C00814A83 /* RedundantSetAccessControlRule.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RedundantSetAccessControlRule.swift; sourceTree = "<group>"; };
 		D4998DE61DF191380006E05D /* AttributesRuleTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AttributesRuleTests.swift; sourceTree = "<group>"; };
 		D4998DE81DF194F20006E05D /* FileHeaderRuleTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = FileHeaderRuleTests.swift; sourceTree = "<group>"; };
@@ -742,6 +763,7 @@
 		D4C889701E385B7B00BAE88D /* RedundantDiscardableLetRule.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = RedundantDiscardableLetRule.swift; sourceTree = "<group>"; };
 		D4CA758E1E2DEEA500A40E8A /* NumberSeparatorRuleTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = NumberSeparatorRuleTests.swift; sourceTree = "<group>"; };
 		D4CFC5D1209EC95A00668488 /* FunctionDefaultParameterAtEndRule.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FunctionDefaultParameterAtEndRule.swift; sourceTree = "<group>"; };
+		D4D11B1C21D8AE2300FB9D93 /* RuleDescriptionTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RuleDescriptionTests.swift; sourceTree = "<group>"; };
 		D4D1B9B91EAC2C870028BE6A /* AccessControlLevel.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AccessControlLevel.swift; sourceTree = "<group>"; };
 		D4D383842145F550000235BD /* StaticOperatorRule.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = StaticOperatorRule.swift; sourceTree = "<group>"; };
 		D4D5A5FE1E1F3A1C00D15E0C /* ShorthandOperatorRule.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ShorthandOperatorRule.swift; sourceTree = "<group>"; };
@@ -855,6 +877,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				D43CD01721D4AFD200944FAC /* Socket.framework in Frameworks */,
 				E876BFBE1B07828500114ED5 /* SourceKittenFramework.framework in Frameworks */,
 				E8C0DFCD1AD349DB007EE3D4 /* SWXMLHash.framework in Frameworks */,
 				3BBF2F9D1C640A0F006CD775 /* SwiftyTextTable.framework in Frameworks */,
@@ -1190,6 +1213,7 @@
 				D0D1211A19E87861005E4BAA /* swiftlint */,
 				D0D1216E19E87B05005E4BAA /* SwiftLintFramework */,
 				D0D1217B19E87B05005E4BAA /* SwiftLintFrameworkTests */,
+				D43CD01521D4AFD200944FAC /* Frameworks */,
 			);
 			indentWidth = 4;
 			sourceTree = "<group>";
@@ -1329,6 +1353,7 @@
 				C2B3C15F2106F78100088928 /* ConfigurationAliasesTests.swift */,
 				E809EDA21B8A73FB00399043 /* ConfigurationTests.swift */,
 				F480DC7E1F26090000099465 /* ConfigurationTests+Nested.swift */,
+				D47820C521D8B3ED00F24836 /* ConfigurationTests+Plugins.swift */,
 				F480DC821F2609D700099465 /* ConfigurationTests+ProjectMock.swift */,
 				3BB47D861C51DE6E00AE6A10 /* CustomRulesTests.swift */,
 				67932E2C1E54AF4B00CB0629 /* CyclomaticComplexityConfigurationTests.swift */,
@@ -1363,11 +1388,14 @@
 				D4F5851820E99B5A0085C6D8 /* PrivateOutletRuleTests.swift */,
 				D4246D6E1F30DB260097E658 /* PrivateOverFilePrivateRuleTests.swift */,
 				E81ADD711ED5ED9D000CD451 /* RegionTests.swift */,
+				D47820CB21D9FA5B00F24836 /* RemoteRuleResolverTests.swift */,
+				D496009521DF39DF00520803 /* RemoteRuleTests.swift */,
 				E86396C61BADAFE6002C9E88 /* ReporterTests.swift */,
 				B89F3BCB1FD5EDA900931E59 /* RequiredEnumCaseRuleTestCase.swift */,
 				3B12C9BE1C3209AC000B423F /* Resources */,
 				3BCC04D31C502BAB006073C3 /* RuleConfigurationTests.swift */,
 				D45255C71F0932F8003C9B56 /* RuleDescription+Examples.swift */,
+				D4D11B1C21D8AE2300FB9D93 /* RuleDescriptionTests.swift */,
 				E8BB8F9B1B17DE3B00199606 /* RulesTests.swift */,
 				3B12C9C61C3361CB000B423F /* RuleTests.swift */,
 				6C7045431C6ADA450003F15A /* SourceKitCrashTests.swift */,
@@ -1399,6 +1427,14 @@
 			path = "Supporting Files";
 			sourceTree = "<group>";
 		};
+		D43CD01521D4AFD200944FAC /* Frameworks */ = {
+			isa = PBXGroup;
+			children = (
+				D43CD01621D4AFD200944FAC /* Socket.framework */,
+			);
+			name = Frameworks;
+			sourceTree = "<group>";
+		};
 		E802ECFE1C56A54600A35AE1 /* Helpers */ = {
 			isa = PBXGroup;
 			children = (
@@ -1475,10 +1511,12 @@
 				3BCC04CC1C4F5694006073C3 /* ConfigurationError.swift */,
 				E8B67C3D1C095E6300FDED8E /* Correction.swift */,
 				E812249B1B04FADC001783D2 /* Linter.swift */,
+				D47820C921D8CD2C00F24836 /* Lazy.swift */,
 				D4FD58B11E12A0200019503C /* LinterCache.swift */,
 				E88DEA6E1B09843F00A66CB0 /* Location.swift */,
 				3B12C9C41C322032000B423F /* MasterRuleList.swift */,
 				E80E018E1B92C1350078EB70 /* Region.swift */,
+				D47820C721D8CBC000F24836 /* PluginDescription.swift */,
 				83D71E261B131EB5000395DE /* RuleDescription.swift */,
 				CC26ED05204DE86E0013BBBC /* RuleIdentifier.swift */,
 				E8BDE3FE1EDF91B6002EC12F /* RuleList.swift */,
@@ -1490,6 +1528,10 @@
 				D4C27BFD1E12D53F00DF713E /* Version.swift */,
 				E88DEA701B09847500A66CB0 /* ViolationSeverity.swift */,
 				3BD9CD3C1C37175B009A5D25 /* YamlParser.swift */,
+				D414D6AF21D34FA500960935 /* RemoteRule.swift */,
+				D414D6B121D3509B00960935 /* RemoteRuleResolver.swift */,
+				D496009121DF32D700520803 /* RemoteLintServer.swift */,
+				D496009321DF376B00520803 /* RemoteRulePayload.swift */,
 			);
 			path = Models;
 			sourceTree = "<group>";
@@ -1831,6 +1873,7 @@
 				BFF028AE1CBCF8A500B38A9D /* TrailingWhitespaceConfiguration.swift in Sources */,
 				3B034B6E1E0BE549005D49A9 /* LineLengthConfiguration.swift in Sources */,
 				B25DCD0C1F7E9FA20028A199 /* MultilineArgumentsRule.swift in Sources */,
+				D414D6B021D34FA500960935 /* RemoteRule.swift in Sources */,
 				6258783B1FFC458100AC34F2 /* DiscouragedObjectLiteralRule.swift in Sources */,
 				62A3E95D209E084000547A86 /* EmptyXCTestMethodRule.swift in Sources */,
 				D4C4A34C1DEA4FF000E0E04C /* AttributesConfiguration.swift in Sources */,
@@ -1862,12 +1905,14 @@
 				D4DA1DFE1E1A10DB0037413D /* NumberSeparatorConfiguration.swift in Sources */,
 				E88198601BEA98F000333A11 /* IdentifierNameRule.swift in Sources */,
 				E88DEA791B098D4400A66CB0 /* RuleParameter.swift in Sources */,
+				D496009221DF32D700520803 /* RemoteLintServer.swift in Sources */,
 				8F715B83213B528B00427BD9 /* UnusedImportRule.swift in Sources */,
 				626D02971F31CBCC0054788D /* XCTFailMessageRule.swift in Sources */,
 				D4DA1DFA1E18D6200037413D /* LargeTupleRule.swift in Sources */,
 				D4B022A41E105636007E5297 /* GenericTypeNameRule.swift in Sources */,
 				E86396CB1BADB519002C9E88 /* CSVReporter.swift in Sources */,
 				37B3FA8B1DFD45A700AD30D2 /* Dictionary+SwiftLint.swift in Sources */,
+				D47820CA21D8CD2C00F24836 /* Lazy.swift in Sources */,
 				823EDC6221020D850070B7CD /* MultilineLiteralBracketsRule.swift in Sources */,
 				D47EF4801F69E3100012C4CA /* ColonRule+FunctionCall.swift in Sources */,
 				E88198561BEA94D800333A11 /* FileLengthRule.swift in Sources */,
@@ -1907,6 +1952,7 @@
 				C3EF547821B5A4000009262F /* LegacyHashingRule.swift in Sources */,
 				31F1B6CC1F60BF4500A57456 /* SwitchCaseAlignmentRule.swift in Sources */,
 				E88DEA731B0984C400A66CB0 /* String+SwiftLint.swift in Sources */,
+				D496009421DF376B00520803 /* RemoteRulePayload.swift in Sources */,
 				E88198591BEA95F100333A11 /* LeadingWhitespaceRule.swift in Sources */,
 				D42B45D91F0AF5E30086B683 /* StrictFilePrivateRule.swift in Sources */,
 				1EC163521D5992D900DD2928 /* VerticalWhitespaceRule.swift in Sources */,
@@ -2008,10 +2054,12 @@
 				CE8178ED1EAC039D0063186E /* UnusedOptionalBindingConfiguration.swift in Sources */,
 				62DEA1661FB21A9E00BCCCC6 /* PrivateActionRule.swift in Sources */,
 				D4FD58B21E12A0200019503C /* LinterCache.swift in Sources */,
+				D47820C821D8CBC000F24836 /* PluginDescription.swift in Sources */,
 				3BD9CD3D1C37175B009A5D25 /* YamlParser.swift in Sources */,
 				F22314B01D4FA4D7009AD165 /* LegacyNSGeometryFunctionsRule.swift in Sources */,
 				E88DEA8C1B0999A000A66CB0 /* ASTRule.swift in Sources */,
 				62426A032118BA6E007E6340 /* ClosureBodyLengthRule.swift in Sources */,
+				D414D6B221D3509B00960935 /* RemoteRuleResolver.swift in Sources */,
 				1E82D5591D7775C7009553D7 /* ClosureSpacingRule.swift in Sources */,
 				E80746F61ECB722F00548D31 /* CacheDescriptionProvider.swift in Sources */,
 				094385041D5D4F7C009168CF /* PrivateOutletRule.swift in Sources */,
@@ -2085,6 +2133,7 @@
 				D4C27C001E12DFF500DF713E /* LinterCacheTests.swift in Sources */,
 				D45255C81F0932F8003C9B56 /* RuleDescription+Examples.swift in Sources */,
 				E81ADD721ED5ED9D000CD451 /* RegionTests.swift in Sources */,
+				D4D11B1D21D8AE2300FB9D93 /* RuleDescriptionTests.swift in Sources */,
 				D4998DE91DF194F20006E05D /* FileHeaderRuleTests.swift in Sources */,
 				750BBD0B214180AF007EC437 /* CollectionAlignmentRuleTests.swift in Sources */,
 				8B01E50220A4349100C9233E /* FunctionParameterCountRuleTests.swift in Sources */,
@@ -2092,6 +2141,7 @@
 				E81ADD741ED6052F000CD451 /* CommandTests.swift in Sources */,
 				29FFC37D1F157BDE007E4825 /* FileLengthRuleTests.swift in Sources */,
 				006204DE1E1E4E0A00FFFBE1 /* VerticalWhitespaceRuleTests.swift in Sources */,
+				D47820CD21D9FA7100F24836 /* RemoteRuleResolverTests.swift in Sources */,
 				02FD8AEF1BFC18D60014BFFB /* ExtendedNSStringTests.swift in Sources */,
 				12E3D4DC2042729300B3E30E /* ExplicitTypeInterfaceRuleTests.swift in Sources */,
 				D48B51231F4F5E4B0068AB98 /* DocumentationTests.swift in Sources */,
@@ -2103,6 +2153,7 @@
 				6C7045441C6ADA450003F15A /* SourceKitCrashTests.swift in Sources */,
 				820F451E21073D7200AA056A /* ConditionalReturnsOnNewlineRuleTests.swift in Sources */,
 				D4246D6F1F30DB260097E658 /* PrivateOverFilePrivateRuleTests.swift in Sources */,
+				D496009621DF39DF00520803 /* RemoteRuleTests.swift in Sources */,
 				B25DCD101F7EF6DC0028A199 /* MultilineArgumentsRuleTests.swift in Sources */,
 				3BB47D871C51DE6E00AE6A10 /* CustomRulesTests.swift in Sources */,
 				E812249A1B04F85B001783D2 /* TestHelpers.swift in Sources */,
@@ -2135,6 +2186,7 @@
 				D4470D5B1EB76F44008A1B2E /* UnusedOptionalBindingRuleTests.swift in Sources */,
 				787CDE3B208F9C34005F3D2F /* SwitchCaseAlignmentRuleTests.swift in Sources */,
 				F480DC811F2609AB00099465 /* XCTestCase+BundlePath.swift in Sources */,
+				D47820C621D8B3ED00F24836 /* ConfigurationTests+Plugins.swift in Sources */,
 				B89F3BCE1FD5EE0200931E59 /* RequiredEnumCaseRuleTestCase.swift in Sources */,
 				C9802F2F1E0C8AEE008AB27F /* TrailingCommaRuleTests.swift in Sources */,
 				3B63D46F1E1F09DF0057BE35 /* LineLengthRuleTests.swift in Sources */,
@@ -2186,7 +2238,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = D0D1212619E878CC005E4BAA /* Debug.xcconfig */;
 			buildSettings = {
-				MACOSX_DEPLOYMENT_TARGET = 10.10;
+				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
@@ -2195,7 +2247,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = D0D1212819E878CC005E4BAA /* Release.xcconfig */;
 			buildSettings = {
-				MACOSX_DEPLOYMENT_TARGET = 10.10;
+				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
@@ -2272,7 +2324,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = D0D1212719E878CC005E4BAA /* Profile.xcconfig */;
 			buildSettings = {
-				MACOSX_DEPLOYMENT_TARGET = 10.10;
+				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				SWIFT_VERSION = 4.0;
 			};
 			name = Profile;
@@ -2315,7 +2367,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = D0D1212919E878CC005E4BAA /* Test.xcconfig */;
 			buildSettings = {
-				MACOSX_DEPLOYMENT_TARGET = 10.10;
+				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				SWIFT_VERSION = 4.0;
 			};
 			name = Test;

SwiftLint.xcworkspace/contents.xcworkspacedata

@@ -22,4 +22,7 @@
    <FileRef
       location = "group:Carthage/Checkouts/Yams/Yams.xcodeproj">
    </FileRef>
+   <FileRef
+      location = "group:Carthage/Checkouts/BlueSocket/BlueSocket.xcodeproj">
+   </FileRef>
 </Workspace>

SwiftLintFramework.podspec

@@ -6,9 +6,10 @@ Pod::Spec.new do |s|
   s.source              = { :git => s.homepage + '.git', :tag => s.version }
   s.license             = { :type => 'MIT', :file => 'LICENSE' }
   s.author              = { 'JP Simard' => 'jp@jpsim.com' }
-  s.platform            = :osx, '10.10'
+  s.platform            = :osx, '10.11'
   s.source_files        = 'Source/SwiftLintFramework/**/*.swift'
   s.pod_target_xcconfig = { 'APPLICATION_EXTENSION_API_ONLY' => 'YES' }
   s.dependency            'SourceKittenFramework', '~> 0.22'
   s.dependency            'Yams', '~> 1.0'
+  s.dependency            'BlueSocket', '~> 1.0.43'
 end

Tests/LinuxMain.swift

@@ -168,6 +168,10 @@ extension ConfigurationTests {
         ("testIndentationFallback", testIndentationFallback),
         ("testConfiguresCorrectlyFromDict", testConfiguresCorrectlyFromDict),
         ("testConfigureFallsBackCorrectly", testConfigureFallsBackCorrectly),
+        ("testLoadsPlugins", testLoadsPlugins),
+        ("testEnableAllRulesConfigurationWithPlugins", testEnableAllRulesConfigurationWithPlugins),
+        ("testWhitelistRulesWithPlugins", testWhitelistRulesWithPlugins),
+        ("testDisabledRulesWithPlugins", testDisabledRulesWithPlugins),
         ("testMerge", testMerge),
         ("testLevel0", testLevel0),
         ("testLevel1", testLevel1),
@@ -1002,6 +1006,18 @@ extension RegionTests {
     ]
 }
 
+extension RemoteRuleResolverTests {
+    static var allTests: [(String, (RemoteRuleResolverTests) -> () throws -> Void)] = [
+        ("testCreatesRemoteRule", testCreatesRemoteRule)
+    ]
+}
+
+extension RemoteRuleTests {
+    static var allTests: [(String, (RemoteRuleTests) -> () throws -> Void)] = [
+        ("testValidate", testValidate)
+    ]
+}
+
 extension ReporterTests {
     static var allTests: [(String, (ReporterTests) -> () throws -> Void)] = [
         ("testReporterFromString", testReporterFromString),
@@ -1071,6 +1087,12 @@ extension RuleConfigurationTests {
     ]
 }
 
+extension RuleDescriptionTests {
+    static var allTests: [(String, (RuleDescriptionTests) -> () throws -> Void)] = [
+        ("testCodableWithMissingValues", testCodableWithMissingValues)
+    ]
+}
+
 extension RuleTests {
     static var allTests: [(String, (RuleTests) -> () throws -> Void)] = [
         ("testRuleIsEqualTo", testRuleIsEqualTo),
@@ -1518,10 +1540,13 @@ XCTMain([
     testCase(RedundantTypeAnnotationRuleTests.allTests),
     testCase(RedundantVoidReturnRuleTests.allTests),
     testCase(RegionTests.allTests),
+    testCase(RemoteRuleResolverTests.allTests),
+    testCase(RemoteRuleTests.allTests),
     testCase(ReporterTests.allTests),
     testCase(RequiredEnumCaseRuleTestCase.allTests),
     testCase(ReturnArrowWhitespaceRuleTests.allTests),
     testCase(RuleConfigurationTests.allTests),
+    testCase(RuleDescriptionTests.allTests),
     testCase(RuleTests.allTests),
     testCase(RulesTests.allTests),
     testCase(ShorthandOperatorRuleTests.allTests),

Tests/SwiftLintFrameworkTests/ConfigurationTests+Plugins.swift

@@ -0,0 +1,73 @@
+@testable import SwiftLintFramework
+import XCTest
+
+extension ConfigurationTests {
+    func testLoadsPlugins() {
+        let configurationJSON = ["plugins": ["path/to/plugin"], "test": 10] as [String: Any]
+        let resolver = ResolverMock()
+        let configuration = Configuration(dict: configurationJSON, remoteRulesResolver: resolver)!
+
+        XCTAssertEqual(configuration.plugins, ["path/to/plugin"])
+        XCTAssertEqual(configuration.remoteRules.map { $0.ruleDescription.identifier }, ["test"])
+        XCTAssertEqual(resolver.executable, "path/to/plugin")
+        XCTAssertEqual(resolver.configuration?.bridge(), configurationJSON.bridge())
+    }
+
+    func testEnableAllRulesConfigurationWithPlugins() {
+        let configuration = Configuration(dict: ["plugins": ["path/to/plugin", "path/to/mock"]],
+                                          ruleList: masterRuleList,
+                                          enableAllRules: true, cachePath: nil,
+                                          remoteRulesResolver: ResolverMock())!
+        XCTAssertEqual(configuration.rules.count, masterRuleList.list.count)
+        XCTAssertEqual(configuration.remoteRules.count, 2)
+    }
+
+    func testWhitelistRulesWithPlugins() {
+        let config = Configuration(dict: ["whitelist_rules": ["nesting", "test"],
+                                          "plugins": ["path/to/plugin",
+                                                      "path/to/mock"]],
+                                   remoteRulesResolver: ResolverMock())!
+        let configuredIdentifiers = config.rules.map {
+            type(of: $0).description.identifier
+        }.sorted()
+
+        XCTAssertEqual(["nesting"], configuredIdentifiers)
+        XCTAssertEqual(["test"], config.remoteRules.map { $0.ruleDescription.identifier })
+    }
+
+    func testDisabledRulesWithPlugins() {
+        let resolver = ResolverMock()
+        let disabledConfig = Configuration(dict: ["disabled_rules": ["nesting", "test"],
+                                                  "plugins": ["path/to/plugin",
+                                                              "path/to/mock"]],
+                                           remoteRulesResolver: resolver)!
+        XCTAssertEqual(disabledConfig.disabledRules, ["nesting"])
+        let expectedIdentifiers = Set(masterRuleList.list.keys
+            .filter({ !(["nesting" ] + optInRules).contains($0) }))
+        let configuredIdentifiers = Set(disabledConfig.rules.map {
+            type(of: $0).description.identifier
+        })
+
+        XCTAssertEqual(expectedIdentifiers, configuredIdentifiers)
+        XCTAssertEqual(disabledConfig.remoteRules.identifiers, ["mock"])
+    }
+}
+
+private class ResolverMock: RemoteRuleResolverProtocol {
+    private(set) var executable: String?
+    private(set) var configuration: [String: Any]?
+
+    private let identifiers = ["path/to/plugin": "test",
+                               "path/to/mock": "mock"]
+
+    func remoteRule(forExecutable executable: String, configuration: [String: Any]?) throws -> RemoteRule {
+        self.executable = executable
+        self.configuration = configuration
+
+        let identifier = identifiers[executable] ?? ""
+        let ruleDescription = RuleDescription(identifier: identifier, name: "Test",
+                                              description: "", kind: .idiomatic)
+        let pluginDescription = PluginDescription(ruleDescription: ruleDescription)
+        return RemoteRule(description: pluginDescription, configuration: nil)
+    }
+}

Tests/SwiftLintFrameworkTests/ConfigurationTests.swift

@@ -3,9 +3,9 @@ import SourceKittenFramework
 @testable import SwiftLintFramework
 import XCTest
 
-private let optInRules = masterRuleList.list.filter({ $0.1.init() is OptInRule }).map({ $0.0 })
+let optInRules = masterRuleList.list.filter({ $0.1.init() is OptInRule }).map({ $0.0 })
 
-private extension Configuration {
+extension Configuration {
     var disabledRules: [String] {
         let configuredRuleIDs = rules.map({ type(of: $0).description.identifier })
         let defaultRuleIDs = Set(masterRuleList.list.values.filter({
@@ -34,6 +34,8 @@ class ConfigurationTests: XCTestCase {
         XCTAssertEqual(config.indentation, .spaces(count: 4))
         XCTAssertEqual(config.reporter, "xcode")
         XCTAssertEqual(reporterFrom(identifier: config.reporter).identifier, "xcode")
+        XCTAssertEqual(config.plugins, [])
+        XCTAssertTrue(config.remoteRules.isEmpty)
     }
 
     func testInitWithRelativePathAndRootPath() {

Tests/SwiftLintFrameworkTests/RemoteRuleResolverTests.swift

@@ -0,0 +1,42 @@
+import Foundation
+import SourceKittenFramework
+@testable import SwiftLintFramework
+import XCTest
+
+class RemoteRuleResolverTests: XCTestCase {
+    func testCreatesRemoteRule() throws {
+        let ruleDescription = RuleDescription(identifier: "test", name: "Test", description: "Test", kind: .lint)
+        let pluginDescription = PluginDescription(ruleDescription: ruleDescription, requiredInformation: [.structure])
+
+        let encoder = JSONEncoder()
+        encoder.keyEncodingStrategy = .convertToSnakeCase
+
+        let jsonString = String(decoding: try encoder.encode(pluginDescription), as: UTF8.self)
+        let scriptContent = """
+                            #!/bin/bash
+                            echo '\(jsonString)'
+                            """
+        let url = URL(fileURLWithPath: NSTemporaryDirectory())
+            .appendingPathComponent(UUID().uuidString)
+        try scriptContent.data(using: .utf8)!.write(to: url)
+        try FileManager.default.setAttributes([.posixPermissions: 0o777], ofItemAtPath: url.path)
+
+        let ruleConfiguration =  [
+            "k1": "v1",
+            "k2": 2
+        ] as [String: Any]
+        let configuration = [
+            "foo": 20,
+            "test": ruleConfiguration
+        ] as [String: Any]
+
+        let resolver = RemoteRuleResolver()
+        let remoteRule = try resolver.remoteRule(forExecutable: url.path,
+                                                 configuration: configuration)
+
+        XCTAssertEqual(remoteRule.ruleDescription.identifier, "test")
+        XCTAssertEqual(remoteRule.description.requiredInformation, [.structure])
+
+        XCTAssertEqual(remoteRule.configuration as? NSDictionary, ruleConfiguration.bridge())
+    }
+}

Tests/SwiftLintFrameworkTests/RemoteRuleTests.swift

@@ -0,0 +1,59 @@
+import Foundation
+import SourceKittenFramework
+@testable import SwiftLintFramework
+import XCTest
+
+class RemoteRuleTests: XCTestCase {
+    func testValidate() {
+        let ruleDescription = RuleDescription(identifier: "test", name: "Test", description: "Test", kind: .lint)
+        let pluginDescription = PluginDescription(ruleDescription: ruleDescription, requiredInformation: [.structure])
+        let configuration = ["key": "value"]
+        let fileContents = "let x = 10"
+
+        let server = RemoteLintServer(socketPath: "/tmp/test.socket")
+        let dispatchGroup = DispatchGroup()
+
+        let delegate = MockRemoteLintServerDelegate()
+        delegate.dispatchGroup = dispatchGroup
+        delegate.violationsToReturn = [
+            StyleViolation(ruleDescription: ruleDescription, severity: .error,
+                           location: Location(file: nil, line: 1, character: 4),
+                           reason: "Test violation")
+        ]
+
+        server.delegate = delegate
+
+        dispatchGroup.enter()
+        server.run()
+
+        // wait until the server has started
+        dispatchGroup.wait()
+
+        let remoteRule = RemoteRule(description: pluginDescription, configuration: configuration)
+        let violations = remoteRule.validate(file: File(contents: fileContents))
+
+        XCTAssertEqual(violations, delegate.violationsToReturn)
+        XCTAssertEqual(delegate.payload?.contents.value, fileContents)
+        XCTAssertNil(delegate.payload!.path)
+        XCTAssertTrue(delegate.payload!.syntaxMap.value.isEmpty)
+        XCTAssertFalse(delegate.payload!.structure.value.isEmpty)
+        XCTAssertEqual(delegate.payload!.configuration as? [String: String], configuration)
+
+        server.shutdown()
+    }
+}
+
+private class MockRemoteLintServerDelegate: RemoteLintServerDelegate {
+    var payload: RemoteRulePayload?
+    var dispatchGroup: DispatchGroup?
+    var violationsToReturn: [StyleViolation] = []
+
+    func server(_ server: RemoteLintServer, didReceivePayload payload: RemoteRulePayload) -> [StyleViolation] {
+        self.payload = payload
+        return violationsToReturn
+    }
+
+    func serverStartedListening(_ server: RemoteLintServer) {
+        dispatchGroup?.leave()
+    }
+}

Tests/SwiftLintFrameworkTests/RuleDescriptionTests.swift

@@ -0,0 +1,34 @@
+import Foundation
+import SwiftLintFramework
+import XCTest
+
+class RuleDescriptionTests: XCTestCase {
+    func testCodableWithMissingValues() throws {
+        let json = [
+            "identifier": "my_cool_rule",
+            "name": "Cool Rule",
+            "description": "Validates stuff",
+            "kind": "style"
+        ]
+
+        let decoder = JSONDecoder()
+        decoder.keyDecodingStrategy = .convertFromSnakeCase
+        let data = try JSONSerialization.data(withJSONObject: json)
+        let ruleDescription = try decoder.decode(RuleDescription.self, from: data)
+
+        let expectedDescription = RuleDescription(identifier: "my_cool_rule", name: "Cool Rule",
+                                                  description: "Validates stuff", kind: .style)
+
+        // Comparing field by field because RuleDescription's == only checks the identifier
+        XCTAssertEqual(ruleDescription.identifier, expectedDescription.identifier)
+        XCTAssertEqual(ruleDescription.name, expectedDescription.name)
+        XCTAssertEqual(ruleDescription.description, expectedDescription.description)
+        XCTAssertEqual(ruleDescription.kind, expectedDescription.kind)
+        XCTAssertEqual(ruleDescription.triggeringExamples, expectedDescription.triggeringExamples)
+        XCTAssertEqual(ruleDescription.nonTriggeringExamples, expectedDescription.nonTriggeringExamples)
+        XCTAssertEqual(ruleDescription.corrections, expectedDescription.corrections)
+        XCTAssertEqual(ruleDescription.deprecatedAliases, expectedDescription.deprecatedAliases)
+        XCTAssertEqual(ruleDescription.minSwiftVersion, expectedDescription.minSwiftVersion)
+        XCTAssertEqual(ruleDescription.requiresFileOnDisk, expectedDescription.requiresFileOnDisk)
+    }
+}

circle.yml

@@ -59,7 +59,7 @@ jobs:
 
   linux_swift_4.2:
     docker:
-      - image: norionomura/swift:42
+      - image: norionomura/swift:421
     steps:
       - checkout
       - run: swift test --parallel