Fix issues with type resolver not finding some Udon types and methods

- Fix special case on constructor construction for 0 length constructors where Udon adds an additional __ to the constructor name
- Fix issues with finding nested array types
- Fix issues in cases where the full name on a type is null
- Add special case for IEnumerableT

Assets/UdonSharp/Editor/UdonSharpResolverContext.cs

@@ -315,6 +315,11 @@ public string GetUdonTypeName(System.Type externType)
 
             string externTypeName = externType.GetNameWithoutGenericArity();
             string typeNamespace = externType.Namespace;
+            if (typeNamespace == null && externType.IsArray)
+            {
+                externType = externType.GetElementType();
+                typeNamespace = externType.Namespace;
+            }
 
             // Handle nested type names (+ sign in names)
             if (externType.DeclaringType != null)
@@ -347,6 +352,10 @@ public string GetUdonTypeName(System.Type externType)
             {
                 fullTypeName = "ListT";
             }
+            else if (fullTypeName == "SystemCollectionsGenericIEnumerableT")
+            {
+                fullTypeName = "IEnumerableT";
+            }
 
             fullTypeName = fullTypeName.Replace("VRCUdonUdonBehaviour", "VRCUdonCommonInterfacesIUdonEventReceiver");
 
@@ -380,7 +389,7 @@ public string GetUdonMethodName(MethodBase externMethod, bool validate = true, L
                 isUdonSharpBehaviour = true;
             }
 
-            string functionNamespace = SanitizeTypeName(methodSourceType.FullName).Replace("VRCUdonUdonBehaviour", "VRCUdonCommonInterfacesIUdonEventReceiver");
+            string functionNamespace = SanitizeTypeName(methodSourceType.FullName ?? methodSourceType.Namespace + methodSourceType.Name).Replace("VRCUdonUdonBehaviour", "VRCUdonCommonInterfacesIUdonEventReceiver");
 
             string methodName = $"__{externMethod.Name.Trim('_').TrimStart('.')}";
             ParameterInfo[] methodParams = externMethod.GetParameters();
@@ -403,6 +412,8 @@ public string GetUdonMethodName(MethodBase externMethod, bool validate = true, L
                     paramStr += $"_{GetUdonTypeName(parameterInfo.ParameterType)}";
                 }
             }
+            else if (externMethod is ConstructorInfo)
+                paramStr += "__";
 
             string returnStr = "";