support dynamic and expandoobject

Author: lofcz

FastCloner.Tests/SpecificScenariosTest.cs

@@ -2,6 +2,7 @@
 using System.ComponentModel.DataAnnotations.Schema;
 using System.Diagnostics.Tracing;
 using System.Drawing;
+using System.Dynamic;
 using System.Globalization;
 using Microsoft.EntityFrameworkCore;
 
@@ -216,6 +217,173 @@ public void Complex_Circular_Reference_Clone()
             Assert.That(clonedB.Next, Is.SameAs(clonedC), "References should point to new instances");
         });
     }
+    
+    [Test]
+    public void Dynamic_Object_Clone()
+    {
+        // Arrange
+        dynamic original = new ExpandoObject();
+        original.Name = "Test";
+        original.Number = 42;
+        original.Nested = new ExpandoObject();
+        original.Nested.Value = "Nested Value";
+        
+        // Act
+        dynamic cloned = FastCloner.DeepClone(original);
+        
+        // Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(cloned, Is.Not.SameAs(original), "Cloned object should be a new instance");
+            Assert.That(cloned.Name, Is.EqualTo("Test"), "String property should be copied");
+            Assert.That(cloned.Number, Is.EqualTo(42), "Number property should be copied");
+            Assert.That(cloned.Nested, Is.Not.SameAs(original.Nested), "Nested object should be cloned");
+            Assert.That(cloned.Nested.Value, Is.EqualTo("Nested Value"), "Nested value should be copied");
+        });
+    }
+    
+    [Test]
+    public void Dynamic_With_Delegate_Clone()
+    {
+        // Arrange
+        dynamic original = new ExpandoObject();
+        int counter = 0;
+        original.Name = "Test";
+        original.Increment = (Func<int>)(() => ++counter);
+    
+        // Act
+        dynamic cloned = FastCloner.DeepClone(original);
+    
+        // Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(cloned.Name, Is.EqualTo("Test"), "String property should be copied");
+            
+            int originalResult = original.Increment();
+            int clonedResult = cloned.Increment();
+            Assert.That(originalResult, Is.EqualTo(1), "Original delegate should increment counter");
+            Assert.That(clonedResult, Is.EqualTo(2), "Cloned delegate should share the same counter");
+            Assert.That(counter, Is.EqualTo(2), "Counter should be incremented twice");
+            
+            originalResult = original.Increment();
+            clonedResult = cloned.Increment();
+            Assert.That(originalResult, Is.EqualTo(3), "Original delegate should continue counting");
+            Assert.That(clonedResult, Is.EqualTo(4), "Cloned delegate should continue counting");
+            Assert.That(counter, Is.EqualTo(4), "Counter should be incremented four times");
+        });
+    }
+    
+    [Test]
+    public void ExpandoObject_With_Collection_Clone()
+    {
+        // Arrange
+        dynamic original = new ExpandoObject();
+        original.List = new List<string> { "Item1", "Item2" };
+        original.Dictionary = new Dictionary<string, int> { ["Key1"] = 1, ["Key2"] = 2 };
+        
+        // Act
+        dynamic cloned = FastCloner.DeepClone(original);
+        
+        // Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(cloned.List, Is.Not.SameAs(original.List), "List should be cloned");
+            Assert.That(cloned.List, Is.EquivalentTo(original.List), "List items should be copied");
+            Assert.That(cloned.Dictionary, Is.Not.SameAs(original.Dictionary), "Dictionary should be cloned");
+            Assert.That(cloned.Dictionary["Key1"], Is.EqualTo(1), "Dictionary values should be copied");
+            Assert.That(cloned.Dictionary["Key2"], Is.EqualTo(2), "Dictionary values should be copied");
+        });
+    }
+
+    [Test]
+    public void ExpandoObject_With_Circular_Reference_Clone()
+    {
+        // Arrange
+        dynamic original = new ExpandoObject();
+        dynamic nested = new ExpandoObject();
+        original.Name = "Original";
+        original.Nested = nested;
+        nested.Parent = original; // Circular reference
+        
+        // Act
+        dynamic cloned = FastCloner.DeepClone(original);
+        
+        // Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(cloned, Is.Not.SameAs(original), "Cloned object should be a new instance");
+            Assert.That(cloned.Nested, Is.Not.SameAs(original.Nested), "Nested object should be cloned");
+            Assert.That(cloned.Name, Is.EqualTo("Original"), "Properties should be copied");
+            Assert.That(cloned.Nested.Parent, Is.SameAs(cloned), "Circular reference should point to cloned instance");
+        });
+    }
+
+    [Test]
+    public void Mixed_Dynamic_And_Static_Types_Clone()
+    {
+        // Arrange
+        StaticType staticObject = new StaticType { Value = "Static" };
+        dynamic dynamic = new ExpandoObject();
+        dynamic.Static = staticObject;
+        dynamic.Name = "Dynamic";
+        
+        // Act
+        dynamic cloned = FastCloner.DeepClone(dynamic);
+        
+        // Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(cloned.Static, Is.Not.SameAs(staticObject), "Static type should be cloned");
+            Assert.That(cloned.Static.Value, Is.EqualTo("Static"), "Static type properties should be copied");
+            Assert.That(cloned.Name, Is.EqualTo("Dynamic"), "Dynamic properties should be copied");
+        });
+    }
+
+    private class StaticType
+    {
+        public string Value { get; set; }
+    }
+
+    [Test]
+    public void ExpandoObject_With_Null_Values_Clone()
+    {
+        // Arrange
+        dynamic original = new ExpandoObject();
+        original.NullProperty = null;
+        original.ValidProperty = "NotNull";
+        
+        // Act
+        dynamic cloned = FastCloner.DeepClone(original);
+        
+        // Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(((object)cloned.NullProperty), Is.Null, "Null properties should remain null");
+            Assert.That(cloned.ValidProperty, Is.EqualTo("NotNull"), "Non-null properties should be copied");
+        });
+    }
+
+    [Test]
+    public void Dynamic_Object_With_Complex_Types_Clone()
+    {
+        // Arrange
+        dynamic original = new ExpandoObject();
+        original.DateTime = DateTime.Now;
+        original.Guid = Guid.NewGuid();
+        original.TimeSpan = TimeSpan.FromHours(1);
+        
+        // Act
+        dynamic cloned = FastCloner.DeepClone(original);
+        
+        // Assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(cloned.DateTime, Is.EqualTo(original.DateTime), "DateTime should be copied");
+            Assert.That(cloned.Guid, Is.EqualTo(original.Guid), "Guid should be copied");
+            Assert.That(cloned.TimeSpan, Is.EqualTo(original.TimeSpan), "TimeSpan should be copied");
+        });
+    }
+
 
     private class Node
     {

FastCloner/Code/BadTypes.cs

@@ -1,4 +1,4 @@
-namespace FastCloner.Helpers;
+namespace FastCloner.Code;
 
 internal class BadTypes
 {

FastCloner/Code/ClonerToExprGenerator.cs

@@ -1,7 +1,7 @@
 using System.Linq.Expressions;
 using System.Reflection;
 
-namespace FastCloner.Helpers;
+namespace FastCloner.Code;
 
 internal static class ClonerToExprGenerator
 {
@@ -27,7 +27,7 @@ private static object GenerateProcessMethod(Type type, bool isDeepClone)
         ParameterExpression? fromLocal = from;
         ParameterExpression? to = Expression.Parameter(methodType);
         ParameterExpression? toLocal = to;
-        ParameterExpression? state = Expression.Parameter(typeof(DeepCloneState));
+        ParameterExpression? state = Expression.Parameter(typeof(FastCloneState));
 
         // if (!type.IsValueType())
         {
@@ -42,7 +42,7 @@ private static object GenerateProcessMethod(Type type, bool isDeepClone)
                 // added from -> to binding to ensure reference loop handling
                 // structs cannot loop here
                 // state.AddKnownRef(from, to)
-                expressionList.Add(Expression.Call(state, typeof(DeepCloneState).GetMethod(nameof(DeepCloneState.AddKnownRef))!, from, to));
+                expressionList.Add(Expression.Call(state, typeof(FastCloneState).GetMethod(nameof(FastCloneState.AddKnownRef))!, from, to));
             }
         }
 
@@ -59,7 +59,7 @@ private static object GenerateProcessMethod(Type type, bool isDeepClone)
 
         foreach (FieldInfo? fieldInfo in fi)
         {
-            if (isDeepClone && !DeepClonerSafeTypes.CanReturnSameObject(fieldInfo.FieldType))
+            if (isDeepClone && !FastClonerSafeTypes.CanReturnSameObject(fieldInfo.FieldType))
             {
                 MethodInfo? methodInfo = fieldInfo.FieldType.IsValueType()
                     ? StaticMethodInfos.DeepClonerGeneratorMethods.CloneStructInternal.MakeGenericMethod(fieldInfo.FieldType)
@@ -78,7 +78,7 @@ private static object GenerateProcessMethod(Type type, bool isDeepClone)
                 {
                     // var setMethod = fieldInfo.GetType().GetMethod("SetValue", new[] { typeof(object), typeof(object) });
                     // expressionList.Add(Expression.Call(Expression.Constant(fieldInfo), setMethod, toLocal, call));
-                    MethodInfo? setMethod = typeof(DeepClonerExprGenerator).GetPrivateStaticMethod(nameof(DeepClonerExprGenerator.ForceSetField))!;
+                    MethodInfo? setMethod = typeof(FastClonerExprGenerator).GetPrivateStaticMethod(nameof(FastClonerExprGenerator.ForceSetField))!;
                     expressionList.Add(Expression.Call(setMethod, Expression.Constant(fieldInfo),
                                                        Expression.Convert(toLocal, typeof(object)), Expression.Convert(call, typeof(object))));
                 }
@@ -95,7 +95,7 @@ private static object GenerateProcessMethod(Type type, bool isDeepClone)
 
         expressionList.Add(Expression.Convert(toLocal, methodType));
 
-        Type? funcType = typeof(Func<,,,>).MakeGenericType(methodType, methodType, typeof(DeepCloneState), methodType);
+        Type? funcType = typeof(Func<,,,>).MakeGenericType(methodType, methodType, typeof(FastCloneState), methodType);
 
         List<ParameterExpression>? blockParams = [];
         if (from != fromLocal) blockParams.Add(fromLocal);
@@ -111,9 +111,9 @@ private static object GenerateProcessArrayMethod(Type type, bool isDeep)
 
         ParameterExpression from = Expression.Parameter(typeof(object));
         ParameterExpression to = Expression.Parameter(typeof(object));
-        ParameterExpression? state = Expression.Parameter(typeof(DeepCloneState));
+        ParameterExpression? state = Expression.Parameter(typeof(FastCloneState));
 
-        Type? funcType = typeof(Func<,,,>).MakeGenericType(typeof(object), typeof(object), typeof(DeepCloneState), typeof(object));
+        Type? funcType = typeof(Func<,,,>).MakeGenericType(typeof(object), typeof(object), typeof(FastCloneState), typeof(object));
 
         if (rank == 1 && type == elementType.MakeArrayType())
         {
@@ -127,7 +127,7 @@ private static object GenerateProcessArrayMethod(Type type, bool isDeep)
             else
             {
                 string? methodName = nameof(Clone1DimArrayClassInternal);
-                if (DeepClonerSafeTypes.CanReturnSameObject(elementType)) methodName = nameof(Clone1DimArraySafeInternal);
+                if (FastClonerSafeTypes.CanReturnSameObject(elementType)) methodName = nameof(Clone1DimArraySafeInternal);
                 else if (elementType.IsValueType()) methodName = nameof(Clone1DimArrayStructInternal);
                 MethodInfo? methodInfo = typeof(ClonerToExprGenerator).GetPrivateStaticMethod(methodName)!.MakeGenericMethod(elementType);
                 MethodCallExpression? callS = Expression.Call(methodInfo, Expression.Convert(from, type), Expression.Convert(to, type), state);
@@ -157,40 +157,40 @@ internal static T[] ShallowClone1DimArraySafeInternal<T>(T[] objFrom, T[] objTo)
     }
 
     // when we can't use code generation, we can use these methods
-    internal static T[] Clone1DimArraySafeInternal<T>(T[] objFrom, T[] objTo, DeepCloneState state)
+    internal static T[] Clone1DimArraySafeInternal<T>(T[] objFrom, T[] objTo, FastCloneState state)
     {
         int l = Math.Min(objFrom.Length, objTo.Length);
         state.AddKnownRef(objFrom, objTo);
         Array.Copy(objFrom, objTo, l);
         return objTo;
     }
 
-    internal static T[]? Clone1DimArrayStructInternal<T>(T[]? objFrom, T[]? objTo, DeepCloneState state)
+    internal static T[]? Clone1DimArrayStructInternal<T>(T[]? objFrom, T[]? objTo, FastCloneState state)
     {
         // not null from called method, but will check it anyway
         if (objFrom == null || objTo == null) return null;
         int l = Math.Min(objFrom.Length, objTo.Length);
         state.AddKnownRef(objFrom, objTo);
-        Func<T, DeepCloneState, T>? cloner = DeepClonerGenerator.GetClonerForValueType<T>();
+        Func<T, FastCloneState, T>? cloner = FastClonerGenerator.GetClonerForValueType<T>();
         for (int i = 0; i < l; i++)
             objTo[i] = cloner(objTo[i], state);
 
         return objTo;
     }
 
-    internal static T[]? Clone1DimArrayClassInternal<T>(T[]? objFrom, T[]? objTo, DeepCloneState state)
+    internal static T[]? Clone1DimArrayClassInternal<T>(T[]? objFrom, T[]? objTo, FastCloneState state)
     {
         // not null from called method, but will check it anyway
         if (objFrom == null || objTo == null) return null;
         int l = Math.Min(objFrom.Length, objTo.Length);
         state.AddKnownRef(objFrom, objTo);
         for (int i = 0; i < l; i++)
-            objTo[i] = (T)DeepClonerGenerator.CloneClassInternal(objFrom[i], state)!;
+            objTo[i] = (T)FastClonerGenerator.CloneClassInternal(objFrom[i], state)!;
 
         return objTo;
     }
 
-    internal static T[,]? Clone2DimArrayInternal<T>(T[,]? objFrom, T[,]? objTo, DeepCloneState state, bool isDeep)
+    internal static T[,]? Clone2DimArrayInternal<T>(T[,]? objFrom, T[,]? objTo, FastCloneState state, bool isDeep)
     {
         // not null from called method, but will check it anyway
         if (objFrom == null || objTo == null) return null;
@@ -201,7 +201,7 @@ internal static T[] Clone1DimArraySafeInternal<T>(T[] objFrom, T[] objTo, DeepCl
         int l1 = Math.Min(objFrom.GetLength(0), objTo.GetLength(0));
         int l2 = Math.Min(objFrom.GetLength(1), objTo.GetLength(1));
         state.AddKnownRef(objFrom, objTo);
-        if ((!isDeep || DeepClonerSafeTypes.CanReturnSameObject(typeof(T)))
+        if ((!isDeep || FastClonerSafeTypes.CanReturnSameObject(typeof(T)))
             && objFrom.GetLength(0) == objTo.GetLength(0)
             && objFrom.GetLength(1) == objTo.GetLength(1))
         {
@@ -219,7 +219,7 @@ internal static T[] Clone1DimArraySafeInternal<T>(T[] objFrom, T[] objTo, DeepCl
 
         if (typeof(T).IsValueType())
         {
-            Func<T, DeepCloneState, T>? cloner = DeepClonerGenerator.GetClonerForValueType<T>();
+            Func<T, FastCloneState, T>? cloner = FastClonerGenerator.GetClonerForValueType<T>();
             for (int i = 0; i < l1; i++)
                 for (int k = 0; k < l2; k++)
                     objTo[i, k] = cloner(objFrom[i, k], state);
@@ -228,14 +228,14 @@ internal static T[] Clone1DimArraySafeInternal<T>(T[] objFrom, T[] objTo, DeepCl
         {
             for (int i = 0; i < l1; i++)
                 for (int k = 0; k < l2; k++)
-                    objTo[i, k] = (T)DeepClonerGenerator.CloneClassInternal(objFrom[i, k], state)!;
+                    objTo[i, k] = (T)FastClonerGenerator.CloneClassInternal(objFrom[i, k], state)!;
         }
 
         return objTo;
     }
 
     // rare cases, very slow cloning. currently it's ok
-    internal static Array? CloneAbstractArrayInternal(Array? objFrom, Array? objTo, DeepCloneState state, bool isDeep)
+    internal static Array? CloneAbstractArrayInternal(Array? objFrom, Array? objTo, FastCloneState state, bool isDeep)
     {
         // not null from called method, but will check it anyway
         if (objFrom == null || objTo == null) return null;
@@ -259,7 +259,7 @@ internal static T[] Clone1DimArraySafeInternal<T>(T[] objFrom, T[] objTo, DeepCl
         {
             objTo.SetValue(
                 isDeep
-                    ? DeepClonerGenerator.CloneClassInternal(
+                    ? FastClonerGenerator.CloneClassInternal(
                         objFrom.GetValue(idxesFrom),
                         state)
                     : objFrom.GetValue(idxesFrom), idxesTo);

FastCloner/Code/DeepCloneState.cs FastCloner/Code/FastCloneState.csFastCloner/Code/DeepCloneState.cs renamed to FastCloner/Code/FastCloneState.cs

@@ -1,8 +1,8 @@
 using System.Runtime.CompilerServices;
 
-namespace FastCloner.Helpers;
+namespace FastCloner.Code;
 
-internal class DeepCloneState
+internal class FastCloneState
 {
     private MiniDictionary? _loops;
 

FastCloner/Code/DeepClonerCache.cs FastCloner/Code/FastClonerCache.csFastCloner/Code/DeepClonerCache.cs renamed to FastCloner/Code/FastClonerCache.cs

@@ -1,8 +1,8 @@
 using System.Collections.Concurrent;
 
-namespace FastCloner.Helpers;
+namespace FastCloner.Code;
 
-internal static class DeepClonerCache
+internal static class FastClonerCache
 {
     private static readonly ConcurrentDictionary<Type, object> _typeCache = new ConcurrentDictionary<Type, object>();