Update and use SwiftSyntax 601.0.1

- new `MemberMacro` expansion signature
- generic arguments are an enum now (type or expression),
  presumably for those fixed arrays? (`Array<5>`?)

Author: helje5

Package.swift

@@ -17,7 +17,7 @@ let package = Package(
   ],
   dependencies: [
     .package(url: "https://github.com/swiftlang/swift-syntax.git",
-             "509.0.0"..<"600.0.1")
+             from: "601.0.1")
   ],
   targets: [
     .target(

Sources/ManagedModelMacros/ModelMacro/ModelMembers.swift

@@ -1,6 +1,6 @@
 //
 //  Created by Helge Heß.
-//  Copyright © 2023 ZeeZide GmbH.
+//  Copyright © 2023-2025 ZeeZide GmbH.
 //
 
 import SwiftCompilerPlugin
@@ -24,6 +24,7 @@ extension ModelMacro: MemberMacro { // @attached(member, names:...)
   public static func expansion(
     of                   macroNode : AttributeSyntax,
     providingMembersOf declaration : some DeclGroupSyntax,
+    conformingTo         protocols : [ TypeSyntax ],
     in                     context : some MacroExpansionContext
   ) throws -> [ DeclSyntax ]
   {

Sources/ManagedModelMacros/Utilities/AttributeTypes.swift

@@ -1,6 +1,6 @@
 //
 //  Created by Helge Heß.
-//  Copyright © 2023 ZeeZide GmbH.
+//  Copyright © 2023-2025 ZeeZide GmbH.
 //
 
 import SwiftSyntax
@@ -62,14 +62,18 @@ extension TypeSyntax {
       }
       if let id = opt.wrappedType.as(IdentifierTypeSyntax.self) {
         if id.isKnownRelationshipPropertyType {
-          let element = id.genericArgumentClause?.arguments.first?.argument
-          return element?.isKnownAttributePropertyType ?? false
+          guard let argument = id.genericArgumentClause?.arguments.first,
+                case .type(let typeSyntax) = argument.argument else
+          {
+            return false
+          }
+          return typeSyntax.isKnownAttributePropertyType
         }
         return id.isKnownFoundationPropertyType
       }
       // E.g. this is not representable: `String??`, this is `String?`.
       // But Double? or Int? is not representable
-      // I.e. nesting of Optional's are not representable.
+      // I.e. nestings of Optional's are not representable.
       return false
     }
 
@@ -80,11 +84,16 @@ extension TypeSyntax {
     }
 
     if let id = self.as(IdentifierTypeSyntax.self),
-       id.isKnownFoundationGenericPropertyType {
-      let arg = id.genericArgumentClause?.arguments.first?.argument
-        return arg?.isKnownAttributePropertyType ?? false
+       id.isKnownFoundationGenericPropertyType
+    {
+      guard let arg = id.genericArgumentClause?.arguments.first,
+            case .type(let typeSyntax) = arg.argument else
+      {
+        return false
+      }
+      return typeSyntax.isKnownAttributePropertyType
     }
-        
+    
     return self.isKnownAttributePropertyType
   }
 
@@ -144,7 +153,10 @@ extension IdentifierTypeSyntax {
 
     switch name {
       case "Array", "Optional", "Set":
-        return genericArgument.argument.isKnownAttributePropertyType
+        guard case .type(let typeSyntax) = genericArgument.argument else {
+          return false
+        }
+        return typeSyntax.isKnownAttributePropertyType
       default:
         return false
     }
@@ -176,12 +188,12 @@ extension IdentifierTypeSyntax {
     if name == "Optional" { // recurse
       guard let generic = genericArgumentClause,
             let genericArgument = generic.arguments.first,
-            generic.arguments.count != 1 else
+            generic.arguments.count != 1,
+            case .type(let typeSyntax) = genericArgument.argument else
       {
         return false
       }
-      return genericArgument.argument
-        .isKnownRelationshipPropertyType(checkOptional: false)
+      return typeSyntax.isKnownRelationshipPropertyType(checkOptional: false)
     }
 
     if toOneRelationshipTypes.contains(name) {