Add MacroError.errorDescription

Author: colemancda

Sources/CoreModelMacros/Error.swift

@@ -5,9 +5,32 @@
 //  Created by Alsey Coleman Miller on 6/17/25.
 //
 
+import Foundation
+
 enum MacroError: Error {
 
+    /// The provided type is invalid.
     case invalidType
+    
+    /// Unknown attribute type
     case unknownAttributeType(for: String)
+    
+    /// Unknown inverse relationship
     case unknownInverseRelationship(for: String)
 }
+
+#if canImport(Darwin)
+extension MacroError: LocalizedError {
+    
+    var errorDescription: String? {
+        switch self {
+        case .invalidType:
+            return NSLocalizedString("The provided type is invalid.", comment: "Invalid type error")
+        case .unknownAttributeType(let type):
+            return String(format: NSLocalizedString("Unknown attribute type: %@", comment: "Unknown attribute type error"), type)
+        case .unknownInverseRelationship(let relationship):
+            return String(format: NSLocalizedString("Unknown inverse relationship for: %@", comment: "Unknown inverse relationship error"), relationship)
+        }
+    }
+}
+#endif