From 0fbd03cf2be37bd75b155a4bd3effa9e45659862 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Danny=20M=C3=B6sch?= <danny.moesch@icloud.com>
Date: Sun, 16 Oct 2022 18:40:12 +0200
Subject: [PATCH] Require visitors to exist (#4383)

---
 Source/SwiftLintFramework/Protocols/SwiftSyntaxRule.swift  | 7 +++----
 .../AnonymousArgumentInMultilineClosureRule.swift          | 2 +-
 .../Rules/Idiomatic/BlockBasedKVORule.swift                | 2 +-
 .../Rules/Idiomatic/DiscouragedAssertRule.swift            | 2 +-
 .../Rules/Idiomatic/DiscouragedObjectLiteralRule.swift     | 2 +-
 .../Rules/Idiomatic/DiscouragedOptionalBooleanRule.swift   | 2 +-
 .../Rules/Idiomatic/ExplicitEnumRawValueRule.swift         | 2 +-
 .../Rules/Idiomatic/ExplicitInitRule.swift                 | 2 +-
 .../Rules/Idiomatic/FallthroughRule.swift                  | 2 +-
 .../SwiftLintFramework/Rules/Idiomatic/ForceCastRule.swift | 2 +-
 .../SwiftLintFramework/Rules/Idiomatic/ForceTryRule.swift  | 2 +-
 .../Rules/Idiomatic/ForceUnwrappingRule.swift              | 2 +-
 .../Idiomatic/FunctionDefaultParameterAtEndRule.swift      | 2 +-
 .../Rules/Idiomatic/IsDisjointRule.swift                   | 2 +-
 .../Rules/Idiomatic/LegacyCGGeometryFunctionsRule.swift    | 2 +-
 .../Rules/Idiomatic/LegacyConstantRule.swift               | 2 +-
 .../Rules/Idiomatic/LegacyHashingRule.swift                | 2 +-
 .../Rules/Idiomatic/LegacyMultipleRule.swift               | 2 +-
 .../Rules/Idiomatic/LegacyNSGeometryFunctionsRule.swift    | 2 +-
 .../Rules/Idiomatic/LegacyRandomRule.swift                 | 2 +-
 .../Rules/Idiomatic/NoExtensionAccessModifierRule.swift    | 2 +-
 .../Rules/Idiomatic/NoFallthroughOnlyRule.swift            | 2 +-
 .../Rules/Idiomatic/PrivateOverFilePrivateRule.swift       | 2 +-
 .../Rules/Idiomatic/RedundantNilCoalescingRule.swift       | 2 +-
 .../Rules/Idiomatic/RedundantStringEnumValueRule.swift     | 2 +-
 .../Rules/Idiomatic/ReturnValueFromVoidFunctionRule.swift  | 2 +-
 .../Rules/Idiomatic/ShorthandOptionalBindingRule.swift     | 2 +-
 .../Rules/Idiomatic/StaticOperatorRule.swift               | 2 +-
 .../Rules/Idiomatic/StrictFilePrivateRule.swift            | 2 +-
 .../Rules/Idiomatic/ToggleBoolRule.swift                   | 2 +-
 .../Rules/Idiomatic/TrailingSemicolonRule.swift            | 2 +-
 .../Rules/Idiomatic/UnavailableConditionRule.swift         | 2 +-
 .../Rules/Idiomatic/UnneededBreakInSwitchRule.swift        | 2 +-
 .../Rules/Idiomatic/UntypedErrorInCatchRule.swift          | 2 +-
 .../Idiomatic/VoidFunctionInTernaryConditionRule.swift     | 2 +-
 .../Rules/Idiomatic/XCTFailMessageRule.swift               | 2 +-
 .../Rules/Lint/AnyObjectProtocolRule.swift                 | 2 +-
 Source/SwiftLintFramework/Rules/Lint/ArrayInitRule.swift   | 2 +-
 .../Rules/Lint/ClassDelegateProtocolRule.swift             | 2 +-
 .../Rules/Lint/DeploymentTargetRule.swift                  | 2 +-
 .../Rules/Lint/DuplicateEnumCasesRule.swift                | 2 +-
 .../SwiftLintFramework/Rules/Lint/DynamicInlineRule.swift  | 2 +-
 .../Rules/Lint/EmptyXCTestMethodRule.swift                 | 2 +-
 .../Rules/Lint/IBInspectableInExtensionRule.swift          | 2 +-
 .../Rules/Lint/IdenticalOperandsRule.swift                 | 2 +-
 Source/SwiftLintFramework/Rules/Lint/InertDeferRule.swift  | 2 +-
 .../Rules/Lint/NSLocalizedStringRequireBundleRule.swift    | 2 +-
 .../Rules/Lint/NSObjectPreferIsEqualRule.swift             | 2 +-
 .../SwiftLintFramework/Rules/Lint/PrivateActionRule.swift  | 2 +-
 .../SwiftLintFramework/Rules/Lint/PrivateOutletRule.swift  | 2 +-
 .../Rules/Lint/PrivateUnitTestRule.swift                   | 2 +-
 .../Rules/Lint/ProhibitedInterfaceBuilderRule.swift        | 2 +-
 .../Rules/Lint/QuickDiscouragedFocusedTestRule.swift       | 2 +-
 .../Rules/Lint/QuickDiscouragedPendingTestRule.swift       | 2 +-
 .../Rules/Lint/SelfInPropertyInitializationRule.swift      | 2 +-
 .../SwiftLintFramework/Rules/Lint/StrongIBOutletRule.swift | 2 +-
 .../Rules/Lint/UnownedVariableCaptureRule.swift            | 2 +-
 .../Rules/Lint/UnusedClosureParameterRule.swift            | 2 +-
 .../Rules/Lint/UnusedSetterValueRule.swift                 | 2 +-
 .../Rules/Lint/ValidIBInspectableRule.swift                | 2 +-
 .../SwiftLintFramework/Rules/Lint/YodaConditionRule.swift  | 2 +-
 .../Rules/Performance/ContainsOverFilterCountRule.swift    | 2 +-
 .../Rules/Performance/ContainsOverFilterIsEmptyRule.swift  | 2 +-
 .../Performance/ContainsOverRangeNilComparisonRule.swift   | 2 +-
 .../Rules/Performance/EmptyCollectionLiteralRule.swift     | 2 +-
 .../Rules/Performance/EmptyStringRule.swift                | 2 +-
 .../Rules/Performance/FirstWhereRule.swift                 | 2 +-
 .../Rules/Performance/FlatMapOverMapReduceRule.swift       | 2 +-
 .../Rules/Performance/LastWhereRule.swift                  | 2 +-
 .../Rules/Performance/ReduceBooleanRule.swift              | 2 +-
 .../Rules/Performance/SortedFirstLastRule.swift            | 2 +-
 Source/SwiftLintFramework/Rules/Style/AttributesRule.swift | 2 +-
 .../SwiftLintFramework/Rules/Style/ClosingBraceRule.swift  | 2 +-
 .../Rules/Style/ClosureParameterPositionRule.swift         | 2 +-
 .../Rules/Style/ClosureSpacingRule.swift                   | 2 +-
 .../Rules/Style/ComputedAccessorsOrderRule.swift           | 2 +-
 .../Rules/Style/ConditionalReturnsOnNewlineRule.swift      | 2 +-
 .../Rules/Style/EmptyEnumArgumentsRule.swift               | 2 +-
 .../Rules/Style/EmptyParametersRule.swift                  | 2 +-
 .../Style/EmptyParenthesesWithTrailingClosureRule.swift    | 2 +-
 .../Rules/Style/ImplicitGetterRule.swift                   | 2 +-
 .../Style/MultipleClosuresWithTrailingClosureRule.swift    | 2 +-
 .../Rules/Style/NoSpaceInMethodCallRule.swift              | 2 +-
 .../Rules/Style/NumberSeparatorRule.swift                  | 2 +-
 .../Rules/Style/OperatorFunctionWhitespaceRule.swift       | 2 +-
 .../Rules/Style/ProtocolPropertyAccessorsOrderRule.swift   | 2 +-
 .../Rules/Style/RedundantDiscardableLetRule.swift          | 2 +-
 .../SwiftLintFramework/Rules/Style/SelfBindingRule.swift   | 2 +-
 .../Rules/Style/ShorthandOperatorRule.swift                | 2 +-
 .../Rules/Style/SwitchCaseOnNewlineRule.swift              | 2 +-
 .../Style/UnneededParenthesesInClosureArgumentRule.swift   | 2 +-
 91 files changed, 93 insertions(+), 94 deletions(-)

diff --git a/Source/SwiftLintFramework/Protocols/SwiftSyntaxRule.swift b/Source/SwiftLintFramework/Protocols/SwiftSyntaxRule.swift
index ebfc7db9e..7956bf285 100644
--- a/Source/SwiftLintFramework/Protocols/SwiftSyntaxRule.swift
+++ b/Source/SwiftLintFramework/Protocols/SwiftSyntaxRule.swift
@@ -7,7 +7,7 @@ public protocol SwiftSyntaxRule: SourceKitFreeRule {
     /// - parameter file: The file for which to produce the visitor.
     ///
     /// - returns: A `ViolationsSyntaxVisitor` for the given file.
-    func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor?
+    func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor
 
     /// Produce a violation for the given file and absolute position.
     ///
@@ -53,12 +53,11 @@ public extension SwiftSyntaxRule {
     }
 
     func validate(file: SwiftLintFile) -> [StyleViolation] {
-        guard let visitor = makeVisitor(file: file),
-              let syntaxTree = preprocess(syntaxTree: file.syntaxTree) else {
+        guard let syntaxTree = preprocess(syntaxTree: file.syntaxTree) else {
             return []
         }
 
-        return visitor
+        return makeVisitor(file: file)
             .walk(tree: syntaxTree, handler: \.violations)
             .sorted()
             .map { makeViolation(file: file, violation: $0) }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/AnonymousArgumentInMultilineClosureRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/AnonymousArgumentInMultilineClosureRule.swift
index 9b062ca2d..bf6e48d4b 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/AnonymousArgumentInMultilineClosureRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/AnonymousArgumentInMultilineClosureRule.swift
@@ -33,7 +33,7 @@ public struct AnonymousArgumentInMultilineClosureRule: SwiftSyntaxRule, OptInRul
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(locationConverter: file.locationConverter)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/BlockBasedKVORule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/BlockBasedKVORule.swift
index e11ba540d..86d52d282 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/BlockBasedKVORule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/BlockBasedKVORule.swift
@@ -35,7 +35,7 @@ public struct BlockBasedKVORule: SwiftSyntaxRule, ConfigurationProviderRule {
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/DiscouragedAssertRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/DiscouragedAssertRule.swift
index 3f9be4ed0..507185c1a 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/DiscouragedAssertRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/DiscouragedAssertRule.swift
@@ -31,7 +31,7 @@ public struct DiscouragedAssertRule: SwiftSyntaxRule, OptInRule, ConfigurationPr
 
     // MARK: - Public
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/DiscouragedObjectLiteralRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/DiscouragedObjectLiteralRule.swift
index 4ae683398..46295d353 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/DiscouragedObjectLiteralRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/DiscouragedObjectLiteralRule.swift
@@ -24,7 +24,7 @@ public struct DiscouragedObjectLiteralRule: SwiftSyntaxRule, OptInRule, Configur
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(configuration: configuration)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/DiscouragedOptionalBooleanRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/DiscouragedOptionalBooleanRule.swift
index df0296396..4aac9fa13 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/DiscouragedOptionalBooleanRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/DiscouragedOptionalBooleanRule.swift
@@ -14,7 +14,7 @@ public struct DiscouragedOptionalBooleanRule: OptInRule, ConfigurationProviderRu
         triggeringExamples: DiscouragedOptionalBooleanRuleExamples.triggeringExamples
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/ExplicitEnumRawValueRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/ExplicitEnumRawValueRule.swift
index a66065197..997545a94 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/ExplicitEnumRawValueRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/ExplicitEnumRawValueRule.swift
@@ -79,7 +79,7 @@ public struct ExplicitEnumRawValueRule: SwiftSyntaxRule, OptInRule, Configuratio
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/ExplicitInitRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/ExplicitInitRule.swift
index 048bf02b3..6d2addf2c 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/ExplicitInitRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/ExplicitInitRule.swift
@@ -171,7 +171,7 @@ public struct ExplicitInitRule: SwiftSyntaxCorrectableRule, ConfigurationProvide
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/FallthroughRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/FallthroughRule.swift
index b8e7f5ac0..7c7d539c5 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/FallthroughRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/FallthroughRule.swift
@@ -30,7 +30,7 @@ public struct FallthroughRule: SwiftSyntaxRule, ConfigurationProviderRule, OptIn
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/ForceCastRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/ForceCastRule.swift
index e1850ecf2..f9e253782 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/ForceCastRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/ForceCastRule.swift
@@ -16,7 +16,7 @@ public struct ForceCastRule: ConfigurationProviderRule, SwiftSyntaxRule {
         triggeringExamples: [ Example("NSNumber() ↓as! Int\n") ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         ForceCastRuleVisitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/ForceTryRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/ForceTryRule.swift
index 461fe95fe..fcf5e70a4 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/ForceTryRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/ForceTryRule.swift
@@ -26,7 +26,7 @@ public struct ForceTryRule: ConfigurationProviderRule, SwiftSyntaxRule {
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/ForceUnwrappingRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/ForceUnwrappingRule.swift
index edb09d826..e6f41f3c3 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/ForceUnwrappingRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/ForceUnwrappingRule.swift
@@ -67,7 +67,7 @@ public struct ForceUnwrappingRule: OptInRule, SwiftSyntaxRule, ConfigurationProv
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         ForceUnwrappingVisitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/FunctionDefaultParameterAtEndRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/FunctionDefaultParameterAtEndRule.swift
index b96dbb97c..7e4e6abeb 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/FunctionDefaultParameterAtEndRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/FunctionDefaultParameterAtEndRule.swift
@@ -51,7 +51,7 @@ public struct FunctionDefaultParameterAtEndRule: SwiftSyntaxRule, ConfigurationP
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/IsDisjointRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/IsDisjointRule.swift
index 16551cef9..dc065d3d7 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/IsDisjointRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/IsDisjointRule.swift
@@ -22,7 +22,7 @@ public struct IsDisjointRule: SwiftSyntaxRule, ConfigurationProviderRule {
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/LegacyCGGeometryFunctionsRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/LegacyCGGeometryFunctionsRule.swift
index 67ccfa0f7..84482f3ae 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/LegacyCGGeometryFunctionsRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/LegacyCGGeometryFunctionsRule.swift
@@ -102,7 +102,7 @@ public struct LegacyCGGeometryFunctionsRule: SwiftSyntaxCorrectableRule, Configu
         "CGRectIntersection": .function(name: "intersect", argumentLabels: [""])
     ]
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         LegacyFunctionRuleHelper.Visitor(legacyFunctions: Self.legacyFunctions)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/LegacyConstantRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/LegacyConstantRule.swift
index 8f48a1871..f08c614f1 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/LegacyConstantRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/LegacyConstantRule.swift
@@ -16,7 +16,7 @@ public struct LegacyConstantRule: SwiftSyntaxCorrectableRule, ConfigurationProvi
         corrections: LegacyConstantRuleExamples.corrections
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/LegacyHashingRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/LegacyHashingRule.swift
index c10479c8d..8ff47b8fa 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/LegacyHashingRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/LegacyHashingRule.swift
@@ -75,7 +75,7 @@ public struct LegacyHashingRule: SwiftSyntaxRule, ConfigurationProviderRule {
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/LegacyMultipleRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/LegacyMultipleRule.swift
index 8c69f6da0..5d81560a7 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/LegacyMultipleRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/LegacyMultipleRule.swift
@@ -43,7 +43,7 @@ public struct LegacyMultipleRule: OptInRule, ConfigurationProviderRule, SwiftSyn
         syntaxTree.folded()
     }
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/LegacyNSGeometryFunctionsRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/LegacyNSGeometryFunctionsRule.swift
index dc5782101..517544121 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/LegacyNSGeometryFunctionsRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/LegacyNSGeometryFunctionsRule.swift
@@ -102,7 +102,7 @@ public struct LegacyNSGeometryFunctionsRule: SwiftSyntaxCorrectableRule, Configu
         "NSPointInRect": .function(name: "contains", argumentLabels: [""], reversed: true)
     ]
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         LegacyFunctionRuleHelper.Visitor(legacyFunctions: Self.legacyFunctions)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/LegacyRandomRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/LegacyRandomRule.swift
index ceab7f4c3..fb2b56a29 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/LegacyRandomRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/LegacyRandomRule.swift
@@ -22,7 +22,7 @@ public struct LegacyRandomRule: SwiftSyntaxRule, ConfigurationProviderRule {
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/NoExtensionAccessModifierRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/NoExtensionAccessModifierRule.swift
index 84b91ff0e..46a1af126 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/NoExtensionAccessModifierRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/NoExtensionAccessModifierRule.swift
@@ -23,7 +23,7 @@ public struct NoExtensionAccessModifierRule: SwiftSyntaxRule, OptInRule, Configu
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/NoFallthroughOnlyRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/NoFallthroughOnlyRule.swift
index 3e5afbe98..7d379e201 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/NoFallthroughOnlyRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/NoFallthroughOnlyRule.swift
@@ -14,7 +14,7 @@ public struct NoFallthroughOnlyRule: SwiftSyntaxRule, ConfigurationProviderRule
         triggeringExamples: NoFallthroughOnlyRuleExamples.triggeringExamples
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/PrivateOverFilePrivateRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/PrivateOverFilePrivateRule.swift
index b28ae6820..df5433272 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/PrivateOverFilePrivateRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/PrivateOverFilePrivateRule.swift
@@ -56,7 +56,7 @@ public struct PrivateOverFilePrivateRule: ConfigurationProviderRule, SwiftSyntax
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(validateExtensions: configuration.validateExtensions)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/RedundantNilCoalescingRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/RedundantNilCoalescingRule.swift
index bef76e14d..291d06967 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/RedundantNilCoalescingRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/RedundantNilCoalescingRule.swift
@@ -23,7 +23,7 @@ public struct RedundantNilCoalescingRule: OptInRule, SwiftSyntaxCorrectableRule,
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/RedundantStringEnumValueRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/RedundantStringEnumValueRule.swift
index 32e9f9544..165547087 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/RedundantStringEnumValueRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/RedundantStringEnumValueRule.swift
@@ -61,7 +61,7 @@ public struct RedundantStringEnumValueRule: SwiftSyntaxRule, ConfigurationProvid
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/ReturnValueFromVoidFunctionRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/ReturnValueFromVoidFunctionRule.swift
index ffca58ed5..6d9603465 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/ReturnValueFromVoidFunctionRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/ReturnValueFromVoidFunctionRule.swift
@@ -15,7 +15,7 @@ public struct ReturnValueFromVoidFunctionRule: ConfigurationProviderRule, OptInR
         triggeringExamples: ReturnValueFromVoidFunctionRuleExamples.triggeringExamples
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         ReturnValueFromVoidFunctionVisitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/ShorthandOptionalBindingRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/ShorthandOptionalBindingRule.swift
index 192dc083c..b6b3674a9 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/ShorthandOptionalBindingRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/ShorthandOptionalBindingRule.swift
@@ -81,7 +81,7 @@ public struct ShorthandOptionalBindingRule: OptInRule, SwiftSyntaxCorrectableRul
 
     public init() {}
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/StaticOperatorRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/StaticOperatorRule.swift
index fdb3ce5ef..2e1c66be4 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/StaticOperatorRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/StaticOperatorRule.swift
@@ -78,7 +78,7 @@ public struct StaticOperatorRule: SwiftSyntaxRule, ConfigurationProviderRule, Op
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/StrictFilePrivateRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/StrictFilePrivateRule.swift
index d7a237e54..bd0f0fdff 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/StrictFilePrivateRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/StrictFilePrivateRule.swift
@@ -58,7 +58,7 @@ public struct StrictFilePrivateRule: OptInRule, ConfigurationProviderRule, Swift
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/ToggleBoolRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/ToggleBoolRule.swift
index dee85eda1..c80a9614e 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/ToggleBoolRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/ToggleBoolRule.swift
@@ -31,7 +31,7 @@ public struct ToggleBoolRule: SwiftSyntaxCorrectableRule, ConfigurationProviderR
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/TrailingSemicolonRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/TrailingSemicolonRule.swift
index d7299d3bb..c5c993dea 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/TrailingSemicolonRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/TrailingSemicolonRule.swift
@@ -24,7 +24,7 @@ public struct TrailingSemicolonRule: SwiftSyntaxCorrectableRule, ConfigurationPr
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/UnavailableConditionRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/UnavailableConditionRule.swift
index 2303f0427..f1085b375 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/UnavailableConditionRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/UnavailableConditionRule.swift
@@ -71,7 +71,7 @@ public struct UnavailableConditionRule: ConfigurationProviderRule, SwiftSyntaxRu
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         UnavailableConditionRuleVisitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/UnneededBreakInSwitchRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/UnneededBreakInSwitchRule.swift
index 4bc227fed..6c83082f2 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/UnneededBreakInSwitchRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/UnneededBreakInSwitchRule.swift
@@ -50,7 +50,7 @@ public struct UnneededBreakInSwitchRule: SwiftSyntaxRule, ConfigurationProviderR
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         UnneededBreakInSwitchRuleVisitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/UntypedErrorInCatchRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/UntypedErrorInCatchRule.swift
index 1c030b04b..8d4d6c439 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/UntypedErrorInCatchRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/UntypedErrorInCatchRule.swift
@@ -87,7 +87,7 @@ public struct UntypedErrorInCatchRule: OptInRule, ConfigurationProviderRule, Swi
             Example("do {\n    try foo() \n} ↓catch (let error) {}"): Example("do {\n    try foo() \n} catch {}")
         ])
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         UntypedErrorInCatchRuleVisitor(viewMode: .sourceAccurate)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/VoidFunctionInTernaryConditionRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/VoidFunctionInTernaryConditionRule.swift
index b74cffadb..6e96937ba 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/VoidFunctionInTernaryConditionRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/VoidFunctionInTernaryConditionRule.swift
@@ -108,7 +108,7 @@ public struct VoidFunctionInTernaryConditionRule: ConfigurationProviderRule, Swi
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         VoidFunctionInTernaryConditionVisitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/XCTFailMessageRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/XCTFailMessageRule.swift
index c4829be8c..9a44f8ca2 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/XCTFailMessageRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/XCTFailMessageRule.swift
@@ -36,7 +36,7 @@ public struct XCTFailMessageRule: SwiftSyntaxRule, ConfigurationProviderRule {
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/AnyObjectProtocolRule.swift b/Source/SwiftLintFramework/Rules/Lint/AnyObjectProtocolRule.swift
index 1c3aa2f54..11cbf2b14 100644
--- a/Source/SwiftLintFramework/Rules/Lint/AnyObjectProtocolRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/AnyObjectProtocolRule.swift
@@ -42,7 +42,7 @@ public struct AnyObjectProtocolRule: SwiftSyntaxCorrectableRule, OptInRule, Conf
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         warnDeprecatedOnce()
         return Visitor(viewMode: .sourceAccurate)
     }
diff --git a/Source/SwiftLintFramework/Rules/Lint/ArrayInitRule.swift b/Source/SwiftLintFramework/Rules/Lint/ArrayInitRule.swift
index 90484322a..10861106f 100644
--- a/Source/SwiftLintFramework/Rules/Lint/ArrayInitRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/ArrayInitRule.swift
@@ -51,7 +51,7 @@ public struct ArrayInitRule: SwiftSyntaxRule, ConfigurationProviderRule, OptInRu
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/ClassDelegateProtocolRule.swift b/Source/SwiftLintFramework/Rules/Lint/ClassDelegateProtocolRule.swift
index 2435e2875..7974034ee 100644
--- a/Source/SwiftLintFramework/Rules/Lint/ClassDelegateProtocolRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/ClassDelegateProtocolRule.swift
@@ -31,7 +31,7 @@ public struct ClassDelegateProtocolRule: SwiftSyntaxRule, ConfigurationProviderR
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/DeploymentTargetRule.swift b/Source/SwiftLintFramework/Rules/Lint/DeploymentTargetRule.swift
index 1942f4b11..5481e5e8d 100644
--- a/Source/SwiftLintFramework/Rules/Lint/DeploymentTargetRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/DeploymentTargetRule.swift
@@ -16,7 +16,7 @@ public struct DeploymentTargetRule: ConfigurationProviderRule, SwiftSyntaxRule {
         triggeringExamples: DeploymentTargetRuleExamples.triggeringExamples
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(platformToConfiguredMinVersion: platformToConfiguredMinVersion)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Lint/DuplicateEnumCasesRule.swift b/Source/SwiftLintFramework/Rules/Lint/DuplicateEnumCasesRule.swift
index 12afae9c1..70401527b 100644
--- a/Source/SwiftLintFramework/Rules/Lint/DuplicateEnumCasesRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/DuplicateEnumCasesRule.swift
@@ -37,7 +37,7 @@ public struct DuplicateEnumCasesRule: ConfigurationProviderRule, SwiftSyntaxRule
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/DynamicInlineRule.swift b/Source/SwiftLintFramework/Rules/Lint/DynamicInlineRule.swift
index efac56b27..73c0ca1b4 100644
--- a/Source/SwiftLintFramework/Rules/Lint/DynamicInlineRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/DynamicInlineRule.swift
@@ -24,7 +24,7 @@ public struct DynamicInlineRule: SwiftSyntaxRule, ConfigurationProviderRule {
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/EmptyXCTestMethodRule.swift b/Source/SwiftLintFramework/Rules/Lint/EmptyXCTestMethodRule.swift
index 67d5592ea..cec2b0105 100644
--- a/Source/SwiftLintFramework/Rules/Lint/EmptyXCTestMethodRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/EmptyXCTestMethodRule.swift
@@ -14,7 +14,7 @@ public struct EmptyXCTestMethodRule: OptInRule, ConfigurationProviderRule, Swift
         triggeringExamples: EmptyXCTestMethodRuleExamples.triggeringExamples
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         EmptyXCTestMethodRuleVisitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/IBInspectableInExtensionRule.swift b/Source/SwiftLintFramework/Rules/Lint/IBInspectableInExtensionRule.swift
index 0b6e3c6cb..a31fc0aad 100644
--- a/Source/SwiftLintFramework/Rules/Lint/IBInspectableInExtensionRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/IBInspectableInExtensionRule.swift
@@ -26,7 +26,7 @@ public struct IBInspectableInExtensionRule: SwiftSyntaxRule, ConfigurationProvid
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/IdenticalOperandsRule.swift b/Source/SwiftLintFramework/Rules/Lint/IdenticalOperandsRule.swift
index e8df3f633..246242c5b 100644
--- a/Source/SwiftLintFramework/Rules/Lint/IdenticalOperandsRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/IdenticalOperandsRule.swift
@@ -75,7 +75,7 @@ public struct IdenticalOperandsRule: ConfigurationProviderRule, SwiftSyntaxRule,
         syntaxTree.folded()
     }
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/InertDeferRule.swift b/Source/SwiftLintFramework/Rules/Lint/InertDeferRule.swift
index 977d4d4b0..f151543ab 100644
--- a/Source/SwiftLintFramework/Rules/Lint/InertDeferRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/InertDeferRule.swift
@@ -50,7 +50,7 @@ public struct InertDeferRule: ConfigurationProviderRule, SwiftSyntaxRule {
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/NSLocalizedStringRequireBundleRule.swift b/Source/SwiftLintFramework/Rules/Lint/NSLocalizedStringRequireBundleRule.swift
index 40cb9ee3d..0adefb24d 100644
--- a/Source/SwiftLintFramework/Rules/Lint/NSLocalizedStringRequireBundleRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/NSLocalizedStringRequireBundleRule.swift
@@ -42,7 +42,7 @@ public struct NSLocalizedStringRequireBundleRule: SwiftSyntaxRule, OptInRule, Co
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/NSObjectPreferIsEqualRule.swift b/Source/SwiftLintFramework/Rules/Lint/NSObjectPreferIsEqualRule.swift
index 7d3d8f373..6515d4de6 100644
--- a/Source/SwiftLintFramework/Rules/Lint/NSObjectPreferIsEqualRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/NSObjectPreferIsEqualRule.swift
@@ -14,7 +14,7 @@ public struct NSObjectPreferIsEqualRule: SwiftSyntaxRule, ConfigurationProviderR
         triggeringExamples: NSObjectPreferIsEqualRuleExamples.triggeringExamples
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/PrivateActionRule.swift b/Source/SwiftLintFramework/Rules/Lint/PrivateActionRule.swift
index e75f6e075..01ae12512 100644
--- a/Source/SwiftLintFramework/Rules/Lint/PrivateActionRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/PrivateActionRule.swift
@@ -33,7 +33,7 @@ public struct PrivateActionRule: SwiftSyntaxRule, OptInRule, ConfigurationProvid
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/PrivateOutletRule.swift b/Source/SwiftLintFramework/Rules/Lint/PrivateOutletRule.swift
index 4d29f80ac..c9cc5ea3d 100644
--- a/Source/SwiftLintFramework/Rules/Lint/PrivateOutletRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/PrivateOutletRule.swift
@@ -78,7 +78,7 @@ public struct PrivateOutletRule: SwiftSyntaxRule, OptInRule, ConfigurationProvid
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(allowPrivateSet: configuration.allowPrivateSet)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/PrivateUnitTestRule.swift b/Source/SwiftLintFramework/Rules/Lint/PrivateUnitTestRule.swift
index f567b2e23..f20636eac 100644
--- a/Source/SwiftLintFramework/Rules/Lint/PrivateUnitTestRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/PrivateUnitTestRule.swift
@@ -136,7 +136,7 @@ public struct PrivateUnitTestRule: SwiftSyntaxCorrectableRule, ConfigurationProv
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(parentClassRegex: configuration.regex)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Lint/ProhibitedInterfaceBuilderRule.swift b/Source/SwiftLintFramework/Rules/Lint/ProhibitedInterfaceBuilderRule.swift
index 3a59b6fda..f68f34e22 100644
--- a/Source/SwiftLintFramework/Rules/Lint/ProhibitedInterfaceBuilderRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/ProhibitedInterfaceBuilderRule.swift
@@ -20,7 +20,7 @@ public struct ProhibitedInterfaceBuilderRule: ConfigurationProviderRule, SwiftSy
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/QuickDiscouragedFocusedTestRule.swift b/Source/SwiftLintFramework/Rules/Lint/QuickDiscouragedFocusedTestRule.swift
index 8f6fc75ac..1e5012fd6 100644
--- a/Source/SwiftLintFramework/Rules/Lint/QuickDiscouragedFocusedTestRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/QuickDiscouragedFocusedTestRule.swift
@@ -14,7 +14,7 @@ public struct QuickDiscouragedFocusedTestRule: OptInRule, ConfigurationProviderR
         triggeringExamples: QuickDiscouragedFocusedTestRuleExamples.triggeringExamples
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/QuickDiscouragedPendingTestRule.swift b/Source/SwiftLintFramework/Rules/Lint/QuickDiscouragedPendingTestRule.swift
index 53f1e651e..952a014d6 100644
--- a/Source/SwiftLintFramework/Rules/Lint/QuickDiscouragedPendingTestRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/QuickDiscouragedPendingTestRule.swift
@@ -14,7 +14,7 @@ public struct QuickDiscouragedPendingTestRule: OptInRule, ConfigurationProviderR
         triggeringExamples: QuickDiscouragedPendingTestRuleExamples.triggeringExamples
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/SelfInPropertyInitializationRule.swift b/Source/SwiftLintFramework/Rules/Lint/SelfInPropertyInitializationRule.swift
index 5c8a4c5e2..849837678 100644
--- a/Source/SwiftLintFramework/Rules/Lint/SelfInPropertyInitializationRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/SelfInPropertyInitializationRule.swift
@@ -92,7 +92,7 @@ public struct SelfInPropertyInitializationRule: ConfigurationProviderRule, Swift
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/StrongIBOutletRule.swift b/Source/SwiftLintFramework/Rules/Lint/StrongIBOutletRule.swift
index 446562d94..6c622568d 100644
--- a/Source/SwiftLintFramework/Rules/Lint/StrongIBOutletRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/StrongIBOutletRule.swift
@@ -29,7 +29,7 @@ public struct StrongIBOutletRule: ConfigurationProviderRule, SwiftSyntaxCorrecta
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Lint/UnownedVariableCaptureRule.swift b/Source/SwiftLintFramework/Rules/Lint/UnownedVariableCaptureRule.swift
index d05850a43..1dd05e4a3 100644
--- a/Source/SwiftLintFramework/Rules/Lint/UnownedVariableCaptureRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/UnownedVariableCaptureRule.swift
@@ -25,7 +25,7 @@ public struct UnownedVariableCaptureRule: SwiftSyntaxRule, OptInRule, Configurat
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         UnownedVariableCaptureRuleVisitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/UnusedClosureParameterRule.swift b/Source/SwiftLintFramework/Rules/Lint/UnusedClosureParameterRule.swift
index 6fc5d9746..aedef05e7 100644
--- a/Source/SwiftLintFramework/Rules/Lint/UnusedClosureParameterRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/UnusedClosureParameterRule.swift
@@ -16,7 +16,7 @@ public struct UnusedClosureParameterRule: SwiftSyntaxCorrectableRule, Configurat
         corrections: UnusedClosureParameterRuleExamples.corrections
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Lint/UnusedSetterValueRule.swift b/Source/SwiftLintFramework/Rules/Lint/UnusedSetterValueRule.swift
index 0414e861c..3193ccfe4 100644
--- a/Source/SwiftLintFramework/Rules/Lint/UnusedSetterValueRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/UnusedSetterValueRule.swift
@@ -129,7 +129,7 @@ public struct UnusedSetterValueRule: ConfigurationProviderRule, SwiftSyntaxRule
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/ValidIBInspectableRule.swift b/Source/SwiftLintFramework/Rules/Lint/ValidIBInspectableRule.swift
index 7074cbd4c..4aecda9c2 100644
--- a/Source/SwiftLintFramework/Rules/Lint/ValidIBInspectableRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/ValidIBInspectableRule.swift
@@ -110,7 +110,7 @@ public struct ValidIBInspectableRule: SwiftSyntaxRule, ConfigurationProviderRule
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Lint/YodaConditionRule.swift b/Source/SwiftLintFramework/Rules/Lint/YodaConditionRule.swift
index ad06c5ee0..d5f94928f 100644
--- a/Source/SwiftLintFramework/Rules/Lint/YodaConditionRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/YodaConditionRule.swift
@@ -36,7 +36,7 @@ public struct YodaConditionRule: OptInRule, ConfigurationProviderRule, SwiftSynt
             Example("if ↓200 <= i && i <= 299 || ↓600 <= i {}")
         ])
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         YodaConditionRuleVisitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Performance/ContainsOverFilterCountRule.swift b/Source/SwiftLintFramework/Rules/Performance/ContainsOverFilterCountRule.swift
index 30ae8873d..11080316b 100644
--- a/Source/SwiftLintFramework/Rules/Performance/ContainsOverFilterCountRule.swift
+++ b/Source/SwiftLintFramework/Rules/Performance/ContainsOverFilterCountRule.swift
@@ -30,7 +30,7 @@ public struct ContainsOverFilterCountRule: SwiftSyntaxRule, OptInRule, Configura
         }
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Performance/ContainsOverFilterIsEmptyRule.swift b/Source/SwiftLintFramework/Rules/Performance/ContainsOverFilterIsEmptyRule.swift
index 248b4538f..0d3699f70 100644
--- a/Source/SwiftLintFramework/Rules/Performance/ContainsOverFilterIsEmptyRule.swift
+++ b/Source/SwiftLintFramework/Rules/Performance/ContainsOverFilterIsEmptyRule.swift
@@ -28,7 +28,7 @@ public struct ContainsOverFilterIsEmptyRule: SwiftSyntaxRule, OptInRule, Configu
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Performance/ContainsOverRangeNilComparisonRule.swift b/Source/SwiftLintFramework/Rules/Performance/ContainsOverRangeNilComparisonRule.swift
index 08f81d638..444c2e0b5 100644
--- a/Source/SwiftLintFramework/Rules/Performance/ContainsOverRangeNilComparisonRule.swift
+++ b/Source/SwiftLintFramework/Rules/Performance/ContainsOverRangeNilComparisonRule.swift
@@ -27,7 +27,7 @@ public struct ContainsOverRangeNilComparisonRule: SwiftSyntaxRule, OptInRule, Co
         syntaxTree.folded()
     }
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Performance/EmptyCollectionLiteralRule.swift b/Source/SwiftLintFramework/Rules/Performance/EmptyCollectionLiteralRule.swift
index 4dff56c70..80ec77399 100644
--- a/Source/SwiftLintFramework/Rules/Performance/EmptyCollectionLiteralRule.swift
+++ b/Source/SwiftLintFramework/Rules/Performance/EmptyCollectionLiteralRule.swift
@@ -28,7 +28,7 @@ public struct EmptyCollectionLiteralRule: SwiftSyntaxRule, ConfigurationProvider
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Performance/EmptyStringRule.swift b/Source/SwiftLintFramework/Rules/Performance/EmptyStringRule.swift
index 1f390142e..e85821cb3 100644
--- a/Source/SwiftLintFramework/Rules/Performance/EmptyStringRule.swift
+++ b/Source/SwiftLintFramework/Rules/Performance/EmptyStringRule.swift
@@ -24,7 +24,7 @@ public struct EmptyStringRule: ConfigurationProviderRule, OptInRule, SwiftSyntax
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Performance/FirstWhereRule.swift b/Source/SwiftLintFramework/Rules/Performance/FirstWhereRule.swift
index 474036a2c..23e6c788b 100644
--- a/Source/SwiftLintFramework/Rules/Performance/FirstWhereRule.swift
+++ b/Source/SwiftLintFramework/Rules/Performance/FirstWhereRule.swift
@@ -32,7 +32,7 @@ public struct FirstWhereRule: SwiftSyntaxRule, OptInRule, ConfigurationProviderR
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Performance/FlatMapOverMapReduceRule.swift b/Source/SwiftLintFramework/Rules/Performance/FlatMapOverMapReduceRule.swift
index 203cca4c8..6eab9d4ea 100644
--- a/Source/SwiftLintFramework/Rules/Performance/FlatMapOverMapReduceRule.swift
+++ b/Source/SwiftLintFramework/Rules/Performance/FlatMapOverMapReduceRule.swift
@@ -19,7 +19,7 @@ public struct FlatMapOverMapReduceRule: SwiftSyntaxRule, OptInRule, Configuratio
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Performance/LastWhereRule.swift b/Source/SwiftLintFramework/Rules/Performance/LastWhereRule.swift
index dcd5b19e1..54a95d7ec 100644
--- a/Source/SwiftLintFramework/Rules/Performance/LastWhereRule.swift
+++ b/Source/SwiftLintFramework/Rules/Performance/LastWhereRule.swift
@@ -28,7 +28,7 @@ public struct LastWhereRule: SwiftSyntaxRule, OptInRule, ConfigurationProviderRu
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Performance/ReduceBooleanRule.swift b/Source/SwiftLintFramework/Rules/Performance/ReduceBooleanRule.swift
index 9826f54d7..fd1f9abdc 100644
--- a/Source/SwiftLintFramework/Rules/Performance/ReduceBooleanRule.swift
+++ b/Source/SwiftLintFramework/Rules/Performance/ReduceBooleanRule.swift
@@ -26,7 +26,7 @@ public struct ReduceBooleanRule: SwiftSyntaxRule, ConfigurationProviderRule {
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Performance/SortedFirstLastRule.swift b/Source/SwiftLintFramework/Rules/Performance/SortedFirstLastRule.swift
index a3342c7a8..1401456ad 100644
--- a/Source/SwiftLintFramework/Rules/Performance/SortedFirstLastRule.swift
+++ b/Source/SwiftLintFramework/Rules/Performance/SortedFirstLastRule.swift
@@ -42,7 +42,7 @@ public struct SortedFirstLastRule: SwiftSyntaxRule, OptInRule, ConfigurationProv
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Style/AttributesRule.swift b/Source/SwiftLintFramework/Rules/Style/AttributesRule.swift
index b66864848..7a309db81 100644
--- a/Source/SwiftLintFramework/Rules/Style/AttributesRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/AttributesRule.swift
@@ -17,7 +17,7 @@ public struct AttributesRule: SwiftSyntaxRule, OptInRule, ConfigurationProviderR
         triggeringExamples: AttributesRuleExamples.triggeringExamples
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(
             locationConverter: file.locationConverter,
             configuration: configuration
diff --git a/Source/SwiftLintFramework/Rules/Style/ClosingBraceRule.swift b/Source/SwiftLintFramework/Rules/Style/ClosingBraceRule.swift
index 5ac533ddc..2024aff65 100644
--- a/Source/SwiftLintFramework/Rules/Style/ClosingBraceRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/ClosingBraceRule.swift
@@ -23,7 +23,7 @@ public struct ClosingBraceRule: SwiftSyntaxCorrectableRule, ConfigurationProvide
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Style/ClosureParameterPositionRule.swift b/Source/SwiftLintFramework/Rules/Style/ClosureParameterPositionRule.swift
index d4f20420a..6e7288bc5 100644
--- a/Source/SwiftLintFramework/Rules/Style/ClosureParameterPositionRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/ClosureParameterPositionRule.swift
@@ -96,7 +96,7 @@ public struct ClosureParameterPositionRule: SwiftSyntaxRule, ConfigurationProvid
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(locationConverter: file.locationConverter)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Style/ClosureSpacingRule.swift b/Source/SwiftLintFramework/Rules/Style/ClosureSpacingRule.swift
index 88def8656..c854e0e5b 100644
--- a/Source/SwiftLintFramework/Rules/Style/ClosureSpacingRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/ClosureSpacingRule.swift
@@ -38,7 +38,7 @@ public struct ClosureSpacingRule: SwiftSyntaxCorrectableRule, ConfigurationProvi
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         ClosureSpacingRuleVisitor(locationConverter: file.locationConverter)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Style/ComputedAccessorsOrderRule.swift b/Source/SwiftLintFramework/Rules/Style/ComputedAccessorsOrderRule.swift
index 5c11bf9d6..f101e9a3a 100644
--- a/Source/SwiftLintFramework/Rules/Style/ComputedAccessorsOrderRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/ComputedAccessorsOrderRule.swift
@@ -14,7 +14,7 @@ public struct ComputedAccessorsOrderRule: ConfigurationProviderRule, SwiftSyntax
         triggeringExamples: ComputedAccessorsOrderRuleExamples.triggeringExamples
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         ComputedAccessorsOrderRuleVisitor(expectedOrder: configuration.order)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Style/ConditionalReturnsOnNewlineRule.swift b/Source/SwiftLintFramework/Rules/Style/ConditionalReturnsOnNewlineRule.swift
index 5273dfeb5..ebd8a0679 100644
--- a/Source/SwiftLintFramework/Rules/Style/ConditionalReturnsOnNewlineRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/ConditionalReturnsOnNewlineRule.swift
@@ -34,7 +34,7 @@ public struct ConditionalReturnsOnNewlineRule: ConfigurationProviderRule, OptInR
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(
             ifOnly: configuration.ifOnly,
             locationConverter: file.locationConverter
diff --git a/Source/SwiftLintFramework/Rules/Style/EmptyEnumArgumentsRule.swift b/Source/SwiftLintFramework/Rules/Style/EmptyEnumArgumentsRule.swift
index fa05e6b65..3172ed643 100644
--- a/Source/SwiftLintFramework/Rules/Style/EmptyEnumArgumentsRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/EmptyEnumArgumentsRule.swift
@@ -107,7 +107,7 @@ public struct EmptyEnumArgumentsRule: SwiftSyntaxCorrectableRule, ConfigurationP
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Style/EmptyParametersRule.swift b/Source/SwiftLintFramework/Rules/Style/EmptyParametersRule.swift
index 3285069f4..f007ba107 100644
--- a/Source/SwiftLintFramework/Rules/Style/EmptyParametersRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/EmptyParametersRule.swift
@@ -33,7 +33,7 @@ public struct EmptyParametersRule: SwiftSyntaxCorrectableRule, ConfigurationProv
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Style/EmptyParenthesesWithTrailingClosureRule.swift b/Source/SwiftLintFramework/Rules/Style/EmptyParenthesesWithTrailingClosureRule.swift
index 88a958ebd..f4d3d2f55 100644
--- a/Source/SwiftLintFramework/Rules/Style/EmptyParenthesesWithTrailingClosureRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/EmptyParenthesesWithTrailingClosureRule.swift
@@ -46,7 +46,7 @@ public struct EmptyParenthesesWithTrailingClosureRule: SwiftSyntaxCorrectableRul
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Style/ImplicitGetterRule.swift b/Source/SwiftLintFramework/Rules/Style/ImplicitGetterRule.swift
index 5b0a18bd6..7156a3532 100644
--- a/Source/SwiftLintFramework/Rules/Style/ImplicitGetterRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/ImplicitGetterRule.swift
@@ -14,7 +14,7 @@ public struct ImplicitGetterRule: ConfigurationProviderRule, SwiftSyntaxRule {
         triggeringExamples: ImplicitGetterRuleExamples.triggeringExamples
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         ImplicitGetterRuleVisitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Style/MultipleClosuresWithTrailingClosureRule.swift b/Source/SwiftLintFramework/Rules/Style/MultipleClosuresWithTrailingClosureRule.swift
index 625699366..255a7d8ae 100644
--- a/Source/SwiftLintFramework/Rules/Style/MultipleClosuresWithTrailingClosureRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/MultipleClosuresWithTrailingClosureRule.swift
@@ -37,7 +37,7 @@ public struct MultipleClosuresWithTrailingClosureRule: SwiftSyntaxRule, Configur
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Style/NoSpaceInMethodCallRule.swift b/Source/SwiftLintFramework/Rules/Style/NoSpaceInMethodCallRule.swift
index ef4e0af8f..8b25350d1 100644
--- a/Source/SwiftLintFramework/Rules/Style/NoSpaceInMethodCallRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/NoSpaceInMethodCallRule.swift
@@ -45,7 +45,7 @@ public struct NoSpaceInMethodCallRule: SwiftSyntaxCorrectableRule, Configuration
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Style/NumberSeparatorRule.swift b/Source/SwiftLintFramework/Rules/Style/NumberSeparatorRule.swift
index 2ffbe8752..1436e4a2d 100644
--- a/Source/SwiftLintFramework/Rules/Style/NumberSeparatorRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/NumberSeparatorRule.swift
@@ -20,7 +20,7 @@ public struct NumberSeparatorRule: OptInRule, SwiftSyntaxCorrectableRule, Config
         corrections: NumberSeparatorRuleExamples.corrections
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(configuration: configuration)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Style/OperatorFunctionWhitespaceRule.swift b/Source/SwiftLintFramework/Rules/Style/OperatorFunctionWhitespaceRule.swift
index 356c5dbed..618b908f3 100644
--- a/Source/SwiftLintFramework/Rules/Style/OperatorFunctionWhitespaceRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/OperatorFunctionWhitespaceRule.swift
@@ -25,7 +25,7 @@ public struct OperatorFunctionWhitespaceRule: ConfigurationProviderRule, SwiftSy
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Style/ProtocolPropertyAccessorsOrderRule.swift b/Source/SwiftLintFramework/Rules/Style/ProtocolPropertyAccessorsOrderRule.swift
index 5e86f3ea4..538d16d16 100644
--- a/Source/SwiftLintFramework/Rules/Style/ProtocolPropertyAccessorsOrderRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/ProtocolPropertyAccessorsOrderRule.swift
@@ -24,7 +24,7 @@ public struct ProtocolPropertyAccessorsOrderRule: ConfigurationProviderRule, Swi
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Style/RedundantDiscardableLetRule.swift b/Source/SwiftLintFramework/Rules/Style/RedundantDiscardableLetRule.swift
index 1bb84e9ea..f4797d9d2 100644
--- a/Source/SwiftLintFramework/Rules/Style/RedundantDiscardableLetRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/RedundantDiscardableLetRule.swift
@@ -28,7 +28,7 @@ public struct RedundantDiscardableLetRule: SwiftSyntaxCorrectableRule, Configura
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Style/SelfBindingRule.swift b/Source/SwiftLintFramework/Rules/Style/SelfBindingRule.swift
index b233c3e02..746e02b12 100644
--- a/Source/SwiftLintFramework/Rules/Style/SelfBindingRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/SelfBindingRule.swift
@@ -42,7 +42,7 @@ public struct SelfBindingRule: SwiftSyntaxCorrectableRule, ConfigurationProvider
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         SelfBindingRuleVisitor(bindIdentifier: configuration.bindIdentifier)
     }
 
diff --git a/Source/SwiftLintFramework/Rules/Style/ShorthandOperatorRule.swift b/Source/SwiftLintFramework/Rules/Style/ShorthandOperatorRule.swift
index e6d43de35..a6cdbf04e 100644
--- a/Source/SwiftLintFramework/Rules/Style/ShorthandOperatorRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/ShorthandOperatorRule.swift
@@ -46,7 +46,7 @@ public struct ShorthandOperatorRule: ConfigurationProviderRule, SwiftSyntaxRule
         syntaxTree.folded()
     }
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Style/SwitchCaseOnNewlineRule.swift b/Source/SwiftLintFramework/Rules/Style/SwitchCaseOnNewlineRule.swift
index dedc2258f..1ecc472c4 100644
--- a/Source/SwiftLintFramework/Rules/Style/SwitchCaseOnNewlineRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/SwitchCaseOnNewlineRule.swift
@@ -62,7 +62,7 @@ public struct SwitchCaseOnNewlineRule: SwiftSyntaxRule, ConfigurationProviderRul
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(locationConverter: file.locationConverter)
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Style/UnneededParenthesesInClosureArgumentRule.swift b/Source/SwiftLintFramework/Rules/Style/UnneededParenthesesInClosureArgumentRule.swift
index b4a7d7905..bb97bf8b5 100644
--- a/Source/SwiftLintFramework/Rules/Style/UnneededParenthesesInClosureArgumentRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/UnneededParenthesesInClosureArgumentRule.swift
@@ -75,7 +75,7 @@ public struct UnneededParenthesesInClosureArgumentRule: ConfigurationProviderRul
         ]
     )
 
-    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor? {
+    public func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
         Visitor(viewMode: .sourceAccurate)
     }