Add UnityEvent converter that goes through JsonUtility

Author: jacobdufault

Assets/FullSerializer/Source/Converters/Unity/UnityEvent_Converter.cs

@@ -0,0 +1,42 @@
+#if !NO_UNITY
+using System;
+using UnityEngine;
+using UnityEngine.Events;
+
+namespace FullSerializer {
+    partial class fsConverterRegistrar {
+        public static Internal.Converters.UnityEvent_Converter Register_UnityEvent_Converter;
+    }
+}
+
+namespace FullSerializer.Internal.Converters {
+    // The standard FS reflection converter has started causing Unity to crash when processing
+    // UnityEvent. We can send the serialization through JsonUtility which appears to work correctly
+    // instead.
+    //
+    // We have to support legacy serialization formats so importing works as expected.
+    public class UnityEvent_Converter : fsConverter {
+        public override bool CanProcess(Type type) {
+            return typeof(UnityEvent).Resolve().IsAssignableFrom(type) && type.IsGenericType == false;
+        }
+
+        public override bool RequestCycleSupport(Type storageType) {
+            return false;
+        }
+
+        public override fsResult TryDeserialize(fsData data, ref object instance, Type storageType) {
+            Type objectType = (Type)instance;
+
+            fsResult result = fsResult.Success;
+            instance = JsonUtility.FromJson(fsJsonPrinter.CompressedJson(data), objectType);
+            return result;
+        }
+
+        public override fsResult TrySerialize(object instance, out fsData serialized, Type storageType) {
+            fsResult result = fsResult.Success;
+            serialized = fsJsonParser.Parse(JsonUtility.ToJson(instance));
+            return result;
+        }
+    }
+}
+#endif