o
    ×ŸŽiÒ  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__© úbC:\Users\psant\Downloads\Anu Raj Backend\school\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.%sN)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__'   ó   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 )	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   r!   zBaseManager.checkc                 C   sh   dd„ }i }t j|t jd�D ]#\}}t| |ƒrqt|dd ƒ}|s)|d u r*| d¡r*q|||ƒ||< q|S )Nc                    s   t |ƒ‡ fdd„ƒ}|S )Nc                    s   t |  ¡ ˆ ƒ|i |¤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_classr1   Znew_methodsr   r0   r3   r   r   r   Ú_get_queryset_methodsR   s   ÿ
z!BaseManager._get_queryset_methodsNc                 C   s4   |d u rd| j |j f }t|| fd|i|  |¡¥ƒS )Nz%sFrom%sr#   )r&   Útyper:   )r   r9   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i | 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   rC   rD   N)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__r   )NN)r&   r%   Ú__qualname__rA   Zauto_createdZuse_in_migrationsr
   r   r   r    r+   r,   Úclassmethodr:   r=   r@   r   rE   ÚpropertyrF   r-   rG   rJ   rL   Ú__classcell__r   r   r   r   r   
   s.    %


	r   c                   @   s   e Zd ZdS )ÚManagerN)r&   r%   rM   r   r   r   r   rQ   °   s    rQ   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   rR   r   r   r   r   µ   s   
zManagerDescriptor.__init__Nc                 C   s`   |d urt d|j ƒ‚|jjrt d|jjf ƒ‚|jjr(t 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_maprR   r   )r   Úinstancer   r   r   r   Ú__get__¸   s"   ÿÿþÿÿzManagerDescriptor.__get__r   )r&   r%   rM   r   rU   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%   rM   r   r-   rP   r   r   r   r   rV   Ï   s    rV   )rB   r5   Ú	functoolsr   Ú	importlibr   Z	django.dbr   Zdjango.db.models.queryr   r   r=   rQ   r?   rV   r   r   r   r   Ú<module>   s     '