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from typing import Optional, Callable |
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from jsons.classes import JsonSerializable |
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from jsons.serializers.default_dict import default_dict_serializer |
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def default_object_serializer( |
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obj: object, |
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key_transformer: Optional[Callable[[str], str]] = None, |
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strip_nulls: bool = False, |
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strip_privates: bool = False, |
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strip_properties: bool = False, |
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strip_class_variables: bool = False, |
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**kwargs) -> dict: |
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""" |
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Serialize the given ``obj`` to a dict. All values within ``obj`` are also |
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serialized. If ``key_transformer`` is given, it will be used to transform |
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the casing (e.g. snake_case) to a different format (e.g. camelCase). |
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:param obj: the object that is to be serialized. |
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:param key_transformer: a function that will be applied to all keys in the |
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resulting dict. |
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:param strip_nulls: if ``True`` the resulting dict will not contain null |
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values. |
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:param strip_privates: if ``True`` the resulting dict will not contain |
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private attributes (i.e. attributes that start with an underscore). |
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:param strip_properties: if ``True`` the resulting dict will not contain |
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values from @properties. |
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:param strip_class_variables: if ``True`` the resulting dict will not |
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contain values from class variables. |
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:param kwargs: any keyword arguments that are to be passed to the |
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serializer functions. |
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:return: a Python dict holding the values of ``obj``. |
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""" |
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obj_dict = _get_dict_from_obj(obj, strip_privates, strip_properties, |
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strip_class_variables, **kwargs) |
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return default_dict_serializer(obj_dict, |
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key_transformer=key_transformer, |
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strip_nulls=strip_nulls, |
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strip_privates=strip_privates, |
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strip_properties=strip_properties, |
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strip_class_variables=strip_class_variables, |
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**kwargs) |
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def _get_dict_from_obj(obj, |
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strip_privates, |
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strip_properties, |
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strip_class_variables, |
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cls=None, *_, **__): |
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excluded_elems = dir(JsonSerializable) |
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props, other_cls_vars = _get_class_props(obj.__class__) |
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return {attr: obj.__getattribute__(attr) for attr in dir(obj) |
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if not attr.startswith('__') |
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and not (strip_privates and attr.startswith('_')) |
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and not (strip_properties and attr in props) |
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and not (strip_class_variables and attr in other_cls_vars) |
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and attr != 'json' |
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and not isinstance(obj.__getattribute__(attr), Callable) |
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and (not cls or attr in cls.__slots__) |
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and attr not in excluded_elems} |
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def _get_class_props(cls): |
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props = [] |
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other_cls_vars = [] |
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for n, v in _get_complete_class_dict(cls).items(): |
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props.append(n) if type(v) is property else other_cls_vars.append(n) |
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return props, other_cls_vars |
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def _get_complete_class_dict(cls): |
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cls_dict = {} |
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# Loop reversed so values of sub-classes override those of super-classes. |
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for cls_or_elder in reversed(cls.mro()): |
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cls_dict.update(cls_or_elder.__dict__) |
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return cls_dict |
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ramonhagenaars /
jsons
