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U #IGZ` � @ s� d Z ddlmZmZmZ ddlmZmZmZm Z ddddd gZ e d d d d �G d d� de ��Z dd� Z e d d d d �G dd� de ��Zdd � Ze d d d d �G dd� de ��Zdd� Ze d d d d �G dd� de ��Zdd� ZdS )z Commonly useful validators. � )�absolute_import�division�print_function� )� _AndValidator�and_�attrib�attrsr �in_� instance_of�optional�providesFT)�repr�slots�hashc @ s" e Zd Ze� Zdd� Zdd� ZdS )�_InstanceOfValidatorc C s4 t || j�s0tdj|j| j|j|d�|| j|��dS )�P We use a callable class to be able to change the ``__repr__``. z?'{name}' must be {type!r} (got {value!r} that is a {actual!r}).)�name�type�actual�valueN)� isinstancer � TypeError�formatr � __class__��self�inst�attrr � r �/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__$ s ��z _InstanceOfValidator.__repr__N)�__name__� __module__� __qualname__r r r! r$ r r r r r s r c C s t | �S )a� A validator that raises a :exc:`TypeError` if the initializer is called with a wrong type for this particular attribute (checks are performed using :func:`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 :class:`attr.Attribute`), the expected type, and the value it got. )r r" r r r r + s c @ s" e Zd Ze� Zdd� Zdd� ZdS )�_ProvidesValidatorc C s0 | j �|�s,tdj|j| j |d�|| j |��dS )r z<'{name}' must provide {interface!r} which {value!r} doesn't.)r � interfacer N)r) Z providedByr 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$ K 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 :exc:`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 zope.interface.Interface interface: The interface to check for. :raises TypeError: With a human readable error message, the attribute (of type :class:`attr.Attribute`), the expected interface, and the value it got. )r( 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�� validatorr r r r r! f s z_OptionalValidator.__call__c C s dj t| j�d�S )Nz'<optional validator for {what} or None>)Zwhat)r r r- r# r r r r$ l s ��z_OptionalValidator.__repr__N)r% r& r' r r- r! r$ r r r r r+ b 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 :class:`list` of callables. .. versionadded:: 15.1.0 .. versionchanged:: 17.1.0 *validator* can be a list of validators. )r �listr+ r r, r r r r s s c @ s" e Zd Ze� Zdd� Zdd� ZdS )� _InValidatorc C s& || j kr"tdj|j| j |d���d S )Nz/'{name}' must be in {options!r} (got {value!r}))r �optionsr )r0 � ValueErrorr r r r r r r! � s ��z_InValidator.__call__c C s dj | jd�S )Nz(<in_ validator with options {options!r}>�r0 )r r0 r# r r r r$ � s ��z_InValidator.__repr__N)r% r& r' r r0 r! r$ r r r r r/ � s r/ c C s t | �S )a� A validator that raises a :exc:`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, :class:`enum.Enum`, ... :raises ValueError: With a human readable error message, the attribute (of type :class:`attr.Attribute`), the expected options, and the value it got. .. versionadded:: 17.1.0 )r/ r2 r r r r � s N)�__doc__Z __future__r r r �_maker r r r �__all__�objectr r r( r r+ r r/ r r r r r �<module> s( �
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