Make implicitly confirming to Actor to trigger warning

CHANGELOG.md

@@ -10,6 +10,10 @@
 
 #### Enhancements
 
+* Make implicitly confirming to `Actor` to trigger warning.
+ [marunomi](https://github.com/marunomi)
+ [#issue_number](https://github.com/realm/SwiftLint/issues/issue_number)
+
 * Add new option `ignore_typealiases_and_associatedtypes` to
  `nesting` rule. It excludes `typealias` and `associatedtype`
  declarations from the analysis.

Source/SwiftLintBuiltInRules/Rules/Lint/MissingDocsRule.swift

@@ -1,4 +1,5 @@
 import SourceKittenFramework
+import SwiftSyntax
 
 private extension SwiftLintFile {
  func missingDocOffsets(in dictionary: SourceKittenDictionary,
@@ -123,6 +124,12 @@ struct MissingDocsRule: OptInRule {
  func validate(file: SwiftLintFile) -> [StyleViolation] {
  let acls = configuration.parameters.map { $0.value }
  let dict = file.structureDictionary
+ let isImplictlyActorDecleation: Bool = ClassDeclaratopmVisitor(viewMode: .sourceAccurate)
+ .walk(tree: file.syntaxTree, handler: \.isActorImplicitlyHerited)
+
+ if isImplictlyActorDecleation && configuration.excludesInheritedTypes {
+ return []
+ }
  return file.missingDocOffsets(
  in: dict,
  acls: acls,
@@ -137,3 +144,11 @@ struct MissingDocsRule: OptInRule {
  }
  }
 }
+
+private class ClassDeclaratopmVisitor: SyntaxVisitor {
+ private(set) var isActorImplicitlyHerited = false
+
+ override func visitPost(_ node: ActorDeclSyntax) {
+ isActorImplicitlyHerited = true
+ }
+}

Tests/SwiftLintFrameworkTests/MissingDocsRuleTests.swift

@@ -188,6 +188,27 @@ class MissingDocsRuleTests: SwiftLintTestCase {
  )
  }
 
+ func testExcludesImplicitlyActorHelitedTrueByDefault() {
+ let baseDescription = MissingDocsRule.description
+ let nonTriggeringExamples = [
+ Example("""
+ /// Docs
+ public final actor MyActor {
+ public nonisolated var unownedExecutor: UnownedSerialExecutor { }
+ }
+ """),
+ Example("""
+ /// Docs
+ public final actor MyActor: Actor {
+ public nonisolated var unownedExecutor: UnownedSerialExecutor { }
+ }
+ """)
+ ]
+ let description = baseDescription.with(nonTriggeringExamples: nonTriggeringExamples)
+ verifyRule(description,
+ ruleConfiguration: ["excludes_inherited_types": true])
+ }
+
  func testWithExcludesExtensionsDisabled() {
  // Perform additional tests with the ignores_comments settings disabled.
  let baseDescription = MissingDocsRule.description