public static JavaScriptValue CreateExternalWithPrototype <T>(T obj, JavaScriptValue prototype, Action onFree = null)
{
if (((System.Object)obj) == null || ((System.Object)obj).Equals(null))
{
return(JavaScriptValue.Null);
}
// Unity likes to create "null" objects where their ToString() == "null" but it's not technically the C# value null
// so we use Object which UnityEntity.Object extends Equals on
// This will also handle Nullable<T> "nullOrValue?" values
// TODO things that pass in Nullable<T> should be casted to T since Nullable<> is redundant from us removing null ^
Type type = obj.GetType(); // this has to be GetType and not typeof(T) because T will be System.Object sometimes
GCHandle handle;
if (type.IsValueType && !type.IsEnum) // if a struct
{
handle = GCHandle.Alloc(new Bridge.Box <T>(obj));
}
else
{
handle = GCHandle.Alloc(obj);
}
IntPtr ptr = GCHandle.ToIntPtr(handle);
if (onFree != null)
{
freeCallbacks[ptr] = onFree;
}
return(JavaScriptValue.CreateExternalObjectWithPrototype(
ptr,
(intPtr) => {
try {
if (freeCallbacks.ContainsKey(intPtr))
{
Action onFreeForPtr = freeCallbacks[intPtr];
freeCallbacks.Remove(intPtr);
onFreeForPtr();
}
} finally {
if (freeCallbacks.ContainsKey(intPtr))
{
freeCallbacks.Remove(intPtr);
}
GCHandle.FromIntPtr(intPtr).Free();
}
},
prototype
));
}
