U
    R+|jÒ  ã                   @   s†   d dl Z d dlZd dlmZ d dlmZ d dlmZ d dlm	Z	 G dd„ dƒZ
G dd	„ d	e
 e	¡ƒZG d
d„ dƒZG dd„ deƒZdS )é    N©Úwraps)Úimport_module)Úrouter)ÚQuerySetc                       s´   e Zd ZdZdZdZ‡ fdd„Z‡ fdd„Zdd„ Zd	d
„ Z	dd„ Z
dd„ Zedd„ ƒZed$dd„ƒZdd„ Zdd„ Zd%dd„Zedd„ ƒZdd„ Zdd„ Zd d!„ Zd"d#„ Z‡  ZS )&ÚBaseManagerr   Fc                    s   t ƒ  | ¡}||f|_|S ©N)ÚsuperÚ__new__Ú_constructor_args)ÚclsÚargsÚkwargsÚobj©Ú	__class__© ú`c:\users\snmko\desktop\web_content\django_cbt\venv\Lib\site-packages\django/db/models/manager.pyr
      s    
zBaseManager.__new__c                    s.   t ƒ  ¡  |  ¡  d | _d | _d | _i | _d S r   )r	   Ú__init__Ú_set_creation_counterÚmodelÚnameÚ_dbÚ_hints©Úselfr   r   r   r      s    
zBaseManager.__init__c                 C   s   d| j jj| jf S )z,Return "app_label.model_label.manager_name".ú%s.%s)r   Ú_metaÚlabelr   r   r   r   r   Ú__str__#   s    zBaseManager.__str__c                 O   s   | S r   r   )r   r   r   r   r   r   Ú__class_getitem__'   s    zBaseManager.__class_getitem__c                 C   s‚   | j }t| ddƒr,ddd|j|jf ddfS | j}| jj}t|ƒ}t||ƒs\td||f ƒ‚dd||f d| jd | jd fS dS )	z½
        Return a 5-tuple of the form (as_manager (True), manager_class,
        queryset_class, args, kwargs).

        Raise a ValueError if the manager is dynamically generated.
        Z_built_with_as_managerFTNr   z…Could not find manager %s in %s.
Please note that you need to inherit from managers you dynamically generated with 'from_queryset()'.r   é   )	Ú_queryset_classÚgetattrÚ
__module__Ú__name__r   r   ÚhasattrÚ
ValueErrorr   )r   Zqs_classÚmodule_namer   Úmoduler   r   r   Údeconstruct*   s.    û
ýÿ
ûzBaseManager.deconstructc                 K   s   g S r   r   )r   r   r   r   r   ÚcheckO   s    zBaseManager.checkc                 C   sh   dd„ }i }t j|t jd�D ]F\}}t| |ƒr0qt|dd ƒ}|s|d krT| d¡rTq|||ƒ||< q|S )Nc                    s   t |ƒ‡ fdd„ƒ}|S )Nc                    s   t |  ¡ ˆ ƒ||ŽS r   )r#   Úget_queryset)r   r   r   ©r   r   r   Úmanager_methodU   s    zPBaseManager._get_queryset_methods.<locals>.create_method.<locals>.manager_methodr   )r   Úmethodr.   r   r-   r   Úcreate_methodT   s    z8BaseManager._get_queryset_methods.<locals>.create_method)Ú	predicateÚqueryset_onlyÚ_)ÚinspectÚ
getmembersÚ
isfunctionr&   r#   Ú
startswith)r   Úqueryset_classr0   Znew_methodsr   r/   r2   r   r   r   Ú_get_queryset_methodsR   s     ÿ
z!BaseManager._get_queryset_methodsNc                 C   s4   |d krd| j |j f }t|| fd|i|  |¡–ƒS )Nz%sFrom%sr"   )r%   Útyper9   )r   r8   Ú
class_namer   r   r   Úfrom_querysetk   s     ÿþýzBaseManager.from_querysetc                 C   s2   | j p|| _ || _t||t| ƒƒ |j | ¡ d S r   )r   r   ÚsetattrÚManagerDescriptorr   Zadd_manager)r   r   r   r   r   r   Úcontribute_to_classx   s    zBaseManager.contribute_to_classc                 C   s   t j| _t  jd7  _dS )zn
        Set the creation counter value for this instance and increment the
        class-level copy.
        r!   N)r   Úcreation_counterr   r   r   r   r   €   s    z!BaseManager._set_creation_counterc                 C   s&   t   | ¡}|p| j|_|p| j|_|S r   )Úcopyr   r   )r   ÚusingÚhintsr   r   r   r   Ú
db_managerˆ   s    
zBaseManager.db_managerc                 C   s   | j ptj| jf| jŽS r   )r   r   Zdb_for_readr   r   r   r   r   r   ÚdbŽ   s    zBaseManager.dbc                 C   s   | j | j| j| jd�S )z…
        Return a new QuerySet object. Subclasses can override this method to
        customize the behavior of the Manager.
        )r   rB   rC   )r"   r   r   r   r   r   r   r   r,   –   s    zBaseManager.get_querysetc                 C   s   |   ¡ S r   )r,   r   r   r   r   Úall�   s    zBaseManager.allc                 C   s   t || jƒo| j|jkS r   )Ú
isinstancer   r   )r   Úotherr   r   r   Ú__eq__¦   s    
þzBaseManager.__eq__c                 C   s   t | ƒS r   )Úidr   r   r   r   Ú__hash__¬   s    zBaseManager.__hash__)N)NN)r%   r$   Ú__qualname__r@   Zauto_createdZuse_in_migrationsr
   r   r   r    r*   r+   Úclassmethodr9   r<   r?   r   rD   ÚpropertyrE   r,   rF   rI   rK   Ú__classcell__r   r   r   r   r   
   s,   %


	r   c                   @   s   e Zd ZdS )ÚManagerN)r%   r$   rL   r   r   r   r   rP   °   s   rP   c                   @   s   e Zd Zdd„ Zddd„ZdS )r>   c                 C   s
   || _ d S r   )Úmanager)r   rQ   r   r   r   r   µ   s    zManagerDescriptor.__init__Nc                 C   s`   |d k	rt d|j ƒ‚|jjr0t d|jjf ƒ‚|jjrPt d|jj|jjf ƒ‚|jj| jj	 S )Nz)Manager isn't accessible via %s instancesz'Manager isn't available; %s is abstractz7Manager isn't available; '%s' has been swapped for '%s')
ÚAttributeErrorr%   r   ZabstractZobject_nameZswappedr   Zmanagers_maprQ   r   )r   Úinstancer   r   r   r   Ú__get__¸   s"    ÿÿþÿÿzManagerDescriptor.__get__)N)r%   r$   rL   r   rT   r   r   r   r   r>   ´   s   r>   c                       s(   e Zd Z‡ fdd„Z‡ fdd„Z‡  ZS )ÚEmptyManagerc                    s   t ƒ  ¡  || _d S r   )r	   r   r   )r   r   r   r   r   r   Ð   s    
zEmptyManager.__init__c                    s   t ƒ  ¡  ¡ S r   )r	   r,   Únoner   r   r   r   r,   Ô   s    zEmptyManager.get_queryset)r%   r$   rL   r   r,   rO   r   r   r   r   rU   Ï   s   rU   )rA   r4   Ú	functoolsr   Ú	importlibr   Z	django.dbr   Zdjango.db.models.queryr   r   r<   rP   r>   rU   r   r   r   r   Ú<module>   s    '