1 files changed, 115 insertions, 0 deletions
diff --git a/Runtime/Export/Serialization/UnitySurrogateSelector.cs b/Runtime/Export/Serialization/UnitySurrogateSelector.cs
new file mode 100644
index 0000000..17f09e4
--- /dev/null
+++ b/Runtime/Export/Serialization/UnitySurrogateSelector.cs
@@ -0,0 +1,115 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Runtime.Serialization;
+
+namespace UnityEngine.Serialization
+{
+#if !UNITY_WINRT
+	/// <summary>
+	/// Serialization support for <see cref="List{T}" /> and <see cref="Dictionary{TKey,TValue}" /> that doesn't rely on reflection
+	/// of private members in order to be useable under the CoreCLR security model (WebPlayer).
+	/// </summary>
+	public class UnitySurrogateSelector : ISurrogateSelector
+	{
+		public ISerializationSurrogate GetSurrogate(Type type, StreamingContext context, out ISurrogateSelector selector)
+		{
+			if (type.IsGenericType)
+			{
+				var genericTypeDefinition = type.GetGenericTypeDefinition();
+				if (genericTypeDefinition == typeof(List<>))
+				{
+					selector = this;
+					return ListSerializationSurrogate.Default;
+				}
+				if (genericTypeDefinition == typeof(Dictionary<,>))
+				{
+					selector = this;
+					var dictSurrogateType = typeof(DictionarySerializationSurrogate<,>).MakeGenericType(type.GetGenericArguments());
+					return (ISerializationSurrogate) Activator.CreateInstance(dictSurrogateType);
+				}
+			}
+
+			selector = null;
+			return null;
+		}
+
+		public void ChainSelector(ISurrogateSelector selector)
+		{
+			throw new NotImplementedException();
+		}
+
+		public ISurrogateSelector GetNextSelector()
+		{
+			throw new NotImplementedException();
+		}
+	}
+
+	/// <summary>
+	/// Serialization support for <see cref="List{T}" /> that doesn't rely on reflection of private members.
+	/// </summary>
+	class ListSerializationSurrogate : ISerializationSurrogate
+	{
+		public static readonly ISerializationSurrogate Default = new ListSerializationSurrogate();
+
+		public void GetObjectData(object obj, SerializationInfo info, StreamingContext context)
+		{
+			var list = (IList)obj;
+			info.AddValue("_size", list.Count);
+			info.AddValue("_items", ArrayFromGenericList(list));
+			info.AddValue("_version", 0); // required for compatibility with platform deserialization
+		}
+
+		public object SetObjectData(object obj, SerializationInfo info, StreamingContext context, ISurrogateSelector selector)
+		{
+			var list = (IList)Activator.CreateInstance(obj.GetType());
+			var size = info.GetInt32("_size");
+			if (size == 0)
+				return list;
+
+			var items = ((IEnumerable)info.GetValue("_items", typeof(IEnumerable))).GetEnumerator();
+			for (var i = 0; i < size; ++i)
+			{
+				if (!items.MoveNext())
+					throw new InvalidOperationException();
+				list.Add(items.Current);
+			}
+			return list;
+		}
+
+		private static Array ArrayFromGenericList(IList list)
+		{
+			var items = Array.CreateInstance(list.GetType().GetGenericArguments()[0], list.Count);
+			list.CopyTo(items, 0);
+			return items;
+		}
+	}
+
+	/// <summary>
+	/// Serialization support for <see cref="Dictionary{TKey,TValue}" /> that doesn't rely on non public members.
+	/// </summary>
+	class DictionarySerializationSurrogate<TKey, TValue> : ISerializationSurrogate
+	{
+		public void GetObjectData(object obj, SerializationInfo info, StreamingContext context)
+		{
+			var dictionary = ((Dictionary<TKey, TValue>)obj);
+			dictionary.GetObjectData(info, context);
+		}
+
+		public object SetObjectData(object obj, SerializationInfo info, StreamingContext context, ISurrogateSelector selector)
+		{
+			var comparer = (IEqualityComparer<TKey>)info.GetValue("Comparer", typeof(IEqualityComparer<TKey>));
+			var dictionary = new Dictionary<TKey, TValue>(comparer);
+			if (info.MemberCount > 3) // KeyValuePairs might not be present if the dictionary was empty
+			{
+				var keyValuePairs =
+					(KeyValuePair<TKey, TValue>[]) info.GetValue("KeyValuePairs", typeof(KeyValuePair<TKey, TValue>[]));
+				if (keyValuePairs != null)
+					foreach (var kvp in keyValuePairs)
+						dictionary.Add(kvp.Key, kvp.Value);
+			}
+			return dictionary;
+		}
+	}
+#endif
+}