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Commonly useful validators.
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isinstancer � TypeError�formatr � __class__��self�inst�attrr � r% �1/usr/lib/python3/dist-packages/attr/validators.py�__call__ s ���z _InstanceOfValidator.__call__c C � dj | jd�S )Nz)<instance_of validator for type {type!r}>�r )r r �r" r% r% r& �__repr__0 � �z _InstanceOfValidator.__repr__N)�__name__�
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A validator that raises a `TypeError` if the initializer is called
with a wrong type for this particular attribute (checks are performed using
`isinstance` therefore it's also valid to pass a tuple of types).
:param type: The type to check for.
:type type: type or tuple of types
:raises TypeError: With a human readable error message, the attribute
(of type `attr.Attribute`), the expected type, and the value it
got.
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r )r �frozenr c @ s. e Zd Ze� Ze� Ze� Zdd� Zdd� ZdS )�_MatchesReValidatorc C s0 | � |�stdj|j| jj|d�|| j|��dS )r z7'{name}' must match regex {regex!r} ({value!r} doesn't))r �regexr N)�
match_func�
ValueErrorr r r3 �patternr! r% r% r& r' L s
���z _MatchesReValidator.__call__c C r( )Nz,<matches_re validator for pattern {regex!r}>)r3 )r r3 r* r% r% r& r+ [ r, z _MatchesReValidator.__repr__N) r- r. r/ r r3 �flagsr4 r' r+ r% r% r% r& r2 F s r2 c C s� t tdd�}|dtjtjf}||vr%tdd�tdd� t|�D ���f ��t�| |�}|tju r4|j}n|tju r=|j}n|rC|j }n t�d�
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A validator that raises `ValueError` if the initializer is called
with a string that doesn't match *regex*.
:param str regex: a regex string to match against
:param int flags: flags that will be passed to the underlying re function
(default 0)
:param callable func: which underlying `re` function to call (options
are `re.fullmatch`, `re.search`, `re.match`, default
is ``None`` which means either `re.fullmatch` or an emulation of
it on Python 2). For performance reasons, they won't be used directly
but on a pre-`re.compile`\ ed pattern.
.. versionadded:: 19.2.0
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d V qdS )�NoneN)r- )�.0�er% r% r& � <genexpr>x s �
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r c @ r )�_ProvidesValidatorc C s0 | j �|�stdj|j| j |d�|| j |��dS )r z<'{name}' must provide {interface!r} which {value!r} doesn't.)r � interfacer N)rH �
providedByr r r r! r% r% r& r' � s
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A validator that raises a `TypeError` if the initializer is called
with an object that does not provide the requested *interface* (checks are
performed using ``interface.providedBy(value)`` (see `zope.interface
<https://zopeinterface.readthedocs.io/en/latest/>`_).
:param interface: The interface to check for.
:type interface: ``zope.interface.Interface``
:raises TypeError: With a human readable error message, the attribute
(of type `attr.Attribute`), the expected interface, and the
value it got.
)rG rJ r% r% r& r � s r c @ r )�_OptionalValidatorc C s |d u rd S | � |||� d S �N�� validatorr! r% r% r& r' � s z_OptionalValidator.__call__c C s dj t| j�d�S )Nz'<optional validator for {what} or None>)�what)r r rN r* r% r% r& r+ � s �z_OptionalValidator.__repr__N)r- r. r/ r rN r' r+ r% r% r% r& rK � s rK c C s t | t�r tt| ��S t| �S )a�
A validator that makes an attribute optional. An optional attribute is one
which can be set to ``None`` in addition to satisfying the requirements of
the sub-validator.
:param validator: A validator (or a list of validators) that is used for
non-``None`` values.
:type validator: callable or `list` of callables.
.. versionadded:: 15.1.0
.. versionchanged:: 17.1.0 *validator* can be a list of validators.
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r c @ r )� _InValidatorc C sF z|| j v }W n ty d}Y nw |s!tdj|j| j |d���d S )NFz/'{name}' must be in {options!r} (got {value!r}))r �optionsr )rR r r5 r r )r" r# r$ r �
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A validator that raises a `ValueError` if the initializer is called
with a value that does not belong in the options provided. The check is
performed using ``value in options``.
:param options: Allowed options.
:type options: list, tuple, `enum.Enum`, ...
:raises ValueError: With a human readable error message, the attribute (of
type `attr.Attribute`), the expected options, and the value it
got.
.. versionadded:: 17.1.0
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A validator that raises a `attr.exceptions.NotCallableError` if the
initializer is called with a value for this particular attribute
that is not callable.
.. versionadded:: 19.1.0
:raises `attr.exceptions.NotCallableError`: With a human readable error
message containing the attribute (`attr.Attribute`) name,
and the value it got.
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_DeepIterablerM N��defaultrN c C s4 | j dur | � |||� |D ] }| �|||� qdS �r N)�iterable_validator�member_validator)r" r# r$ r �memberr% r% r& r' / s
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{iterable!r})�iterablezJ<deep_iterable validator for{iterable_identifier} iterables of {member!r}>)�iterable_identifierr_ )r] r r^ )r" rb r% r% r& r+ 9 s � ��z_DeepIterable.__repr__)
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A validator that performs deep validation of an iterable.
:param member_validator: Validator to apply to iterable members
:param iterable_validator: Validator to apply to iterable itself
(optional)
.. versionadded:: 19.1.0
:raises TypeError: if any sub-validators fail
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dS )� _DeepMappingrM NrZ c C sF | j dur | � |||� |D ]}| �|||� | �|||| � qdS r\ )�mapping_validator�
key_validator�value_validator)r" r# r$ r �keyr% r% r& r' ] s
�z_DeepMapping.__call__c C s dj | j| jd�S )NzA<deep_mapping validator for objects mapping {key!r} to {value!r}>)rg r )r re rf r* r% r% r& r+ h s
�z_DeepMapping.__repr__) r- r. r/ r r re rf r rd r' r+ r% r% r% r& rc W s rc c C s t | ||�S )a}
A validator that performs deep validation of a dictionary.
:param key_validator: Validator to apply to dictionary keys
:param value_validator: Validator to apply to dictionary values
:param mapping_validator: Validator to apply to top-level mapping
attribute (optional)
.. versionadded:: 19.1.0
:raises TypeError: if any sub-validators fail
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