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Commonly useful validators.
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isinstancer � TypeError�formatr � __class__)�self�inst�attrr � r" �@/opt/alt/python37/lib/python3.7/site-packages/attr/validators.py�__call__ s z _InstanceOfValidator.__call__c C s dj | jd�S )Nz)<instance_of validator for type {type!r}>)r )r r )r r" r" r# �__repr__0 s 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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z7'{name}' must match regex {regex!r} ({value!r} doesn't))r �regexr N)�
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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
� fullmatchNz'func' must be one of %s.z, c s s | ]}|r|j pd V qdS )�NoneN)r& )�.0�er" r" r# � <genexpr>y s z matches_re.<locals>.<genexpr>z(?:{})\Z) �getattr�re�search�matchr- �join�sorted�set�compiler0 r r* )r+ r/ �funcr0 Z valid_funcsr. r, r" r" r# r a s$
c @ s" e Zd Ze� Zdd� Zdd� ZdS )�_ProvidesValidatorc C s0 | j �|�s,tdj|j| j |d�|| j |��dS )zP
We use a callable class to be able to change the ``__repr__``.
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providedByr r r )r r r! r r" r" r# r$ � s z_ProvidesValidator.__call__c C s dj | jd�S )Nz0<provides validator for interface {interface!r}>)r? )r r? )r r" r" r# r% � s z_ProvidesValidator.__repr__N)r& r' r( r r? r$ r% r" r" r" r# r> � s r> c C s t | �S )a(
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.
)r> )r? r" r" r# r � s c @ s" e Zd Ze� Zdd� Zdd� ZdS )�_OptionalValidatorc C s |d kr d S | � |||� d S )N)� validator)r r r! r r" r" r# r$ � s z_OptionalValidator.__call__c C s dj t| j�d�S )Nz'<optional validator for {what} or None>)Zwhat)r r rA )r r" r" r# r% � s z_OptionalValidator.__repr__N)r& r' r( r rA r$ r% r" r" r" r# r@ � s r@ c C s t | t�rtt| ��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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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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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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z_DeepMapping.__call__c C s dj | j| jd�S )NzA<deep_mapping validator for objects mapping {key!r} to {value!r}>)rU r )r rS rT )r r" r" r# r% h s z_DeepMapping.__repr__) r& r' r( r r rS rT r rR r$ r% r" r" r" r# rQ W s
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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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