Neat! In case you took me too literally: railroad diagrams are fun, but far from the only way to give spec level clarity, so don’t feel you need to overindex on my silly comment!
I am curious why it’s parsed right to left. Is this so that you could add new data to a top-level JSONL-esque list, solely by rewriting the end of the data structure, and not needing to change the beginning (or worst-case shift every single byte of data, if you need a longer count)?
It’s an interesting design tradeoff, because you can’t show a partial parse if you’re streaming the content naively beginning to end, which is a bit odd in a world where streams that begin to render token-by-token are all the rage.
But if you have an ability to do range queries, it’s quite effective, and it does allow for those incremental updates!
