add RecordType identity helper

add targeting to RecordType Clone Method

Author: DocSvartz

src/Mapster.Core/Utils/RecordTypeIdentityHelper.cs

@@ -0,0 +1,52 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Mapster.Utils
+{
+    /// <summary>
+    /// CheckTools from Distinctive features of RecordType according to specification:
+    /// https://github.com/dotnet/docs/blob/main/docs/csharp/language-reference/builtin-types/record.md
+    /// </summary>
+    public static class RecordTypeIdentityHelper
+    {
+        private static bool IsRecordСonstructor(Type type)
+        {
+            var ctors = type.GetConstructors(BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public).ToList();
+
+            var isRecordTypeCtor = type.GetConstructors(BindingFlags.Instance | BindingFlags.NonPublic)
+                .Where(x => x.IsFamily == true || (type.IsSealed && x.IsPrivate == true)) // add target from Sealed record
+                .Any(x => x.GetParameters()
+                         .Any(y => y.ParameterType == type));
+
+
+            if (ctors.Count >= 2 && isRecordTypeCtor) 
+                return true;
+
+
+            return false;
+
+        }
+
+        private static bool IsIncludedRecordCloneMethod(Type type)
+        {
+           if( type.GetMethod("<Clone>$")?.MethodImplementationFlags.HasFlag(MethodImplAttributes.IL) == true)
+                return true;
+
+            return false;
+        }
+
+        public static bool IsRecordType(Type type)
+        {
+            if (IsRecordСonstructor(type) && IsIncludedRecordCloneMethod(type))
+                return true;
+
+
+            return false;
+        }
+
+    }
+}

src/Mapster.Tests/WhenMappingRecordRegression.cs

@@ -243,7 +243,6 @@ public void ImplicitOperatorCurrentWorkFromClass()
         #region NowNotWorking
 
         [TestMethod]
-        [Ignore]
         public void DetectFakeRecord()
         {
             var _source = new TestClassPublicCtr(200);

src/Mapster/Utils/ReflectionUtils.cs

@@ -205,20 +205,10 @@ public static bool IsRecordType(this Type type)
                 props.Any(p => p.SetterModifier != AccessModifier.Public))
                 return true;
 
-            //constructor
-            var ctors = type.GetConstructors(BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public).ToList();
-
-            var isRecordTypeCtor = type.GetConstructors(BindingFlags.Instance | BindingFlags.NonPublic)
-                .Where(x => x.IsFamily == true || (type.Attributes.HasFlag(TypeAttributes.Sealed) && x.IsPrivate == true)) // add target from Sealed record
-                .Any(x => x.GetParameters()
-                         .Any(y => y.ParameterType == type));
-
-
-            if (ctors.Count >= 2 && isRecordTypeCtor)
+           if(RecordTypeIdentityHelper.IsRecordType(type))
                 return true;
 
 
-
             return false;
         }