Comment by le-mark

In that case the json parse function might be a bit of a challenge. It should actually be pretty straight forward with the builder functionality you’ve got in there. Loop over the input and use a state machine (switch block with a state variable) keep track of what you’re doing. Oh and you’ll need to recurse or otherwise use a stack to keep the nesting levels correct. Ie objects that contain arrays or objects, arrays that contain arrays, etc.