I appreciate the problem this is trying to solve, but it could be more easily remedied by a JSON stream processor than reinventing the wheel of data marshalling

I appreciate the problem this is trying to solve, but it could be more easily remedied by a JSON stream processor than reinventing the wheel of data marshalling (yet again). JSON is so simplistic in structure, it's trivial to know when you've met the conditions of a completed segment of structure. There's no reason why a stream parser couldn't handle this well.