Current File : //lib/python3/dist-packages/attr/__pycache__/converters.cpython-312.pyc
�
��e& � �P � d Z ddlZddlmZ ddlmZmZmZ g d�Zd� Z edfd�Z
d � Z y)
z
Commonly useful converters.
� N� )�_AnnotationExtractor)�NOTHING�Factory�pipe)�default_if_none�optionalr �to_boolc �� � � � fd�}t � � }|j � }|r t j | |j d< |j � }|r t j | |j d< |S )aO
A converter that allows an attribute to be optional. An optional attribute
is one which can be set to ``None``.
Type annotations will be inferred from the wrapped converter's, if it
has any.
:param callable converter: the converter that is used for non-``None``
values.
.. versionadded:: 17.1.0
c � �� | �y �| � S �N� )�val� converters ��1/usr/lib/python3/dist-packages/attr/converters.py�optional_converterz$optional.<locals>.optional_converter$ s �� � �;����~� � r �return)r �get_first_param_type�typing�Optional�__annotations__�get_return_type)r r �xtr�t�rts ` r r r sp �� � �
�y�
)�C� � � �"�A��4:�O�O�A�4F��*�*�5�1� � � � �B� �7=���r�7J��*�*�8�4� � r c �� � � � t u r|�
d}t |� �� t ur|�
d}t |� �|� t |� � t � t � r � j r
d}t |� �� fd�}|S � fd�}|S )a�
A converter that allows to replace ``None`` values by *default* or the
result of *factory*.
:param default: Value to be used if ``None`` is passed. Passing an instance
of `attrs.Factory` is supported, however the ``takes_self`` option
is *not*.
:param callable factory: A callable that takes no parameters whose result
is used if ``None`` is passed.
:raises TypeError: If **neither** *default* or *factory* is passed.
:raises TypeError: If **both** *default* and *factory* are passed.
:raises ValueError: If an instance of `attrs.Factory` is passed with
``takes_self=True``.
.. versionadded:: 18.2.0
z(Must pass either `default` or `factory`.z5Must pass either `default` or `factory` but not both.z1`takes_self` is not supported by default_if_none.c �, �� | �| S �j � S r
)�factory�r �defaults �r �default_if_none_converterz2default_if_none.<locals>.default_if_none_converterX s �� ����
��?�?�$� $r c � �� | �| S �S r
r r s �r r" z2default_if_none.<locals>.default_if_none_converter` s �� ����
��Nr )r � TypeErrorr �
isinstance�
takes_self�
ValueError)r! r �msgr" s ` r r r 6 s� �� �$ �'��g�o�8����n� ��g� �'�"5�E����n� ����'�"���'�7�#� � � �E�C� �S�/� !� %� %�$�
� %�$r c � � t | t � r| j � } h d�}h d�} | |v ry| |v ry d| � �}t |� �# t $ r Y �w xY w)a
Convert "boolean" strings (e.g., from env. vars.) to real booleans.
Values mapping to :code:`True`:
- :code:`True`
- :code:`"true"` / :code:`"t"`
- :code:`"yes"` / :code:`"y"`
- :code:`"on"`
- :code:`"1"`
- :code:`1`
Values mapping to :code:`False`:
- :code:`False`
- :code:`"false"` / :code:`"f"`
- :code:`"no"` / :code:`"n"`
- :code:`"off"`
- :code:`"0"`
- :code:`0`
:raises ValueError: for any other value.
.. versionadded:: 21.3.0
> T�1r �y�on�yes�true> F�0�f�n�no�off�falseTFz Cannot convert value to bool: )r% �str�lowerr$ r' )r �truthy�falsyr( s r r
r
i sm � �4 �#�s���i�i�k��
:�F� ;�E�
� �&�=�� �%�<�� �
+�3�%�
0�C�
�S�/��� �
� �
�s �A �A � A�A) �__doc__r �_compatr �_maker r r �__all__r r r
r r r �<module>r= s7 ���
� )� )� )� �� �@ $�T� 0%�f'r
Mini Shell