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from typing import Optional, Callable |
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from typish import get_type |
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from jsons._common_impl import get_class_name |
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from jsons._dump_impl import dump |
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from jsons.exceptions import RecursionDetectedError, SerializationError |
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def default_dict_serializer( |
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obj: dict, |
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cls: Optional[type] = None, |
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*, |
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strict: bool = False, |
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strip_nulls: bool = False, |
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key_transformer: Optional[Callable[[str], str]] = None, |
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**kwargs) -> dict: |
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""" |
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Serialize the given ``obj`` to a dict of serialized objects. |
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:param obj: the dict that is to be serialized. |
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:param cls: the type of ``obj``; ``obj`` is dumped as if of that type. |
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:param strict: if ``True`` the serialization will raise upon any the |
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failure of any attribute. Otherwise it continues with a warning. |
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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 key_transformer: a function that will be applied to all keys in the |
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resulting dict. |
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:param kwargs: any keyword arguments that may be given to the serialization |
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process. |
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:return: a dict of which all elements are serialized. |
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""" |
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result = dict() |
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fork_inst = kwargs['fork_inst'] |
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for key in obj: |
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dumped_elem = None |
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try: |
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dumped_elem = dump(obj[key], |
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key_transformer=key_transformer, |
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strip_nulls=strip_nulls, **kwargs) |
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if isinstance(dumped_elem, dict) and '_store_cls' in kwargs: |
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cls_ = get_type(obj[key]) |
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_store_cls_info(dumped_elem, cls_, **kwargs) |
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except RecursionDetectedError: |
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fork_inst._warn('Recursive structure detected in attribute "{}" ' |
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'of object of type "{}", ignoring the attribute.' |
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.format(key, get_class_name(cls))) |
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except SerializationError as err: |
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if strict: |
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raise |
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else: |
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fork_inst._warn('Failed to dump attribute "{}" of object of type ' |
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'"{}". Reason: {}. Ignoring the attribute.' |
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.format(key, get_class_name(cls), err.message)) |
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break |
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if not (strip_nulls and dumped_elem is None): |
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if key_transformer: |
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key = key_transformer(key) |
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result[key] = dumped_elem |
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return result |
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def _store_cls_info(result: dict, cls: type, **kwargs): |
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if kwargs.get('_store_cls'): |
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if cls.__module__ == 'typing': |
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cls_name = repr(cls) |
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else: |
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cls_name = get_class_name(cls, fully_qualified=True, |
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fork_inst=kwargs['fork_inst']) |
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result['-cls'] = cls_name |
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ramonhagenaars /
jsons
