Check if the type contains 'inout' anywhere in its description

This works regardless of SwiftSyntax version and handles cases like "isolated inout"

Author: Matejkob

Sources/SpyableMacro/Factories/ClosureFactory.swift

@@ -203,16 +203,9 @@ struct ClosureFactory {
 
 extension FunctionParameterListSyntax.Element {
   fileprivate var isInoutParameter: Bool {
-    guard let attributedType = self.type.as(AttributedTypeSyntax.self) else {
-      return false
-    }
-
-    #if canImport(SwiftSyntax600)
-        let specifier = attributedType.specifiers.first?.firstToken(viewMode: .all)?.text
-    #else
-        let specifier = attributedType.specifier?.text
-    #endif
-
-    return specifier == TokenSyntax.keyword(.inout).text
+    // Check if the type contains 'inout' anywhere in its description
+    // This works regardless of SwiftSyntax version and handles cases like "isolated inout"
+    let typeDescription = self.type.description.trimmingCharacters(in: .whitespacesAndNewlines)
+    return typeDescription.contains("inout")
   }
 }

Tests/SpyableMacroTests/Factories/UT_ClosureFactory.swift

@@ -55,6 +55,14 @@ final class UT_ClosureFactory: XCTestCase {
     )
   }
 
+  func testVariableDeclarationWithIsolatedInoutAttribute() throws {
+    try assertProtocolFunction(
+      withFunctionDeclaration: "func _ignore_(value: isolated inout TestActor)",
+      prefixForVariable: "_prefix_",
+      expectingVariableDeclaration: "var _prefix_Closure: ((isolated inout TestActor) -> Void)?"
+    )
+  }
+
   func testVariableDeclarationWithGenericParameter() throws {
     try assertProtocolFunction(
       withFunctionDeclaration: "func _ignore_<T>(value: T)",
@@ -133,6 +141,14 @@ final class UT_ClosureFactory: XCTestCase {
     )
   }
 
+  func testCallExpressionWithIsolatedInoutAttribute() throws {
+    try assertProtocolFunction(
+      withFunctionDeclaration: "func _ignore_(value: isolated inout TestActor)",
+      prefixForVariable: "_prefix_",
+      expectingCallExpression: "_prefix_Closure?(&value)"
+    )
+  }
+
   func testCallExpressionWithGenericParameter() throws {
     try assertProtocolFunction(
       withFunctionDeclaration: "func _ignore_<T>(value: T)",