added ObjectComparer public property (#27)

Author: 1OL1

SharpSerializer/Serializing/PropertyFactory.cs

@@ -46,8 +46,7 @@ public sealed class PropertyFactory
         /// <summary>
         /// Contains reference targets.
         /// </summary>
-        private readonly Dictionary<object, ReferenceTargetProperty> _propertyCache =
-            new Dictionary<object, ReferenceTargetProperty>();
+        private readonly Dictionary<object, ReferenceTargetProperty> _propertyCache;
 
         /// <summary>
         /// It will be incremented as neccessary
@@ -58,8 +57,18 @@ public sealed class PropertyFactory
         /// </summary>
         /// <param name = "propertyProvider">provides all important properties of the decomposed object</param>
         public PropertyFactory(PropertyProvider propertyProvider)
+            :this (propertyProvider, EqualityComparer<object>.Default)
+        {
+        }
+
+        /// <summary>
+        /// </summary>
+        /// <param name = "propertyProvider">provides all important properties of the decomposed object</param>
+        /// <param name="objectComparer">A Comparer, used to define objects with the same references</param>
+        public PropertyFactory(PropertyProvider propertyProvider, IEqualityComparer<object> objectComparer)
         {
             _propertyProvider = propertyProvider;
+            _propertyCache = new Dictionary<object, ReferenceTargetProperty>(objectComparer);
         }
 
         /// <summary>

SharpSerializer/SharpSerializer.cs

@@ -38,6 +38,7 @@
 using Polenter.Serialization.Deserializing;
 using Polenter.Serialization.Serializing;
 using System.Runtime.CompilerServices;
+using System.Collections.Generic;
 
 namespace Polenter.Serialization
 {
@@ -51,6 +52,7 @@ public sealed class SharpSerializer
         private PropertyProvider _propertyProvider;
         private string _rootName;
         private IPropertySerializer _serializer;
+        private IEqualityComparer<object> _objectComparer;
 
         /// <summary>
         ///   Standard Constructor. Default is Xml serializing
@@ -136,6 +138,19 @@ public string RootName
             set { _rootName = value; }
         }
 
+        /// <summary>
+        /// A Comparer, used to define objects with the same references
+        /// </summary>
+        public IEqualityComparer<object> ObjectComparer
+		{
+            get
+            {
+                if (_objectComparer == null) _objectComparer = EqualityComparer<object>.Default;
+                return _objectComparer;
+            }
+            set { _objectComparer = value; }
+		}
+
         /// <summary>
         /// Gets or sets the instance creator for creating objects.
         /// </summary>
@@ -255,7 +270,7 @@ public void Serialize(object data, Stream stream)
 
             lock (_syncObj)
             {
-                var factory = new PropertyFactory(PropertyProvider);
+                var factory = new PropertyFactory(PropertyProvider, ObjectComparer);
 
                 Property property = factory.CreateProperty(RootName, data);