def dereference_json()

in src/helpers/__init__.py [0:0]

• 19 lines of code
• 10 McCabe index (conditional complexity)

def dereference_json(obj: dict) -> None:
    """
    Changes the given dict in place de-referencing all $ref. Does not support
    files and http references. If you need them, better use jsonref
    lib. Works only for dict as root object.
    Note that it does not create new objects but only replaces {'$ref': ''}
    with objects that ref(s) are referring to, so:
    - works really fast, 20x faster than jsonref, at least relying on my
      benchmarks;
    - changes your existing object;
    - can reference the same object multiple times so changing some arbitrary
      values afterward can change object in multiple places.
    Though, it's perfectly fine in case you need to dereference obj, dump it
    to file and forget
    :param obj:
    :return:
    """

    def _inner(o):
        if isinstance(o, (str, int, float, bool, NoneType)):
            return
        # dict or list
        if isinstance(o, dict):
            for k, v in o.items():
                if isinstance(v, dict) and isinstance(v.get('$ref'), str):
                    _path = v['$ref'].strip('#/').split('/')
                    o[k] = deep_get(obj, _path)
                else:
                    _inner(v)
        else:  # isinstance(o, list)
            for i, v in enumerate(o):
                if isinstance(v, dict) and isinstance(v.get('$ref'), str):
                    _path = v['$ref'].strip('#/').split('/')
                    o[i] = deep_get(obj, _path)
                else:
                    _inner(v)

    _inner(obj)