o
     h5                     @  s  U d dl mZ d dlZd dlmZ d dlmZmZmZm	Z	m
Z
mZ d dlmZ ddlmZ ddlmZ e	d	Ze	d
Zd"ddZd"ddZd"ddZe
edddG dd dZd#ddZe Zded< G dd dejZG dd dee ZG d d! d!ee ZdS )$    )annotationsN)	dataclass)AnyGenericLiteralTypeVarfinaloverload)WeakKeyDictionary   )get_async_backend)AsyncBackendTDreturnNonec                        t   I dH  dS )z
    Check for cancellation and allow the scheduler to switch to another task.

    Equivalent to (but more efficient than)::

        await checkpoint_if_cancelled()
        await cancel_shielded_checkpoint()


    .. versionadded:: 3.0

    N)r   
checkpoint r   r   P/var/www/html/pro-man-master/venv/lib/python3.10/site-packages/anyio/lowlevel.pyr         r   c                     r   )z
    Enter a checkpoint if the enclosing cancel scope has been cancelled.

    This does not allow the scheduler to switch to a different task.

    .. versionadded:: 3.0

    N)r   checkpoint_if_cancelledr   r   r   r   r      s   	r   c                     r   )z
    Allow the scheduler to switch to another task but without checking for cancellation.

    Equivalent to (but potentially more efficient than)::

        with CancelScope(shield=True):
            await checkpoint()


    .. versionadded:: 3.0

    N)r   cancel_shielded_checkpointr   r   r   r   r   +   r   r   TF)frozenreprc                   @  s"   e Zd ZU dZded< ded< dS )EventLoopTokenza
    An opaque object that holds a reference to an event loop.

    .. versionadded:: 4.11.0
    ztype[AsyncBackend]backend_classobjectnative_tokenN)__name__
__module____qualname____doc____annotations__r   r   r   r   r   ;   s   
 r   c                  C  s   t  } |  }t| |S )z
    Return a token object that can be used to call code in the current event loop from
    another thread.

    .. versionadded:: 4.11.0

    )r   current_tokenr   )r   	raw_tokenr   r   r   r$   H   s   
r$   z1WeakKeyDictionary[object, dict[RunVar[Any], Any]]	_run_varsc                   @  s   e Zd Ze ZdS )_NoValueSetN)r   r    r!   enumautoNO_VALUE_SETr   r   r   r   r'   X   s    r'   c                   @  s   e Zd ZdZd	ddZdS )
RunvarToken_var_value	_redeemedvar	RunVar[T]value%T | Literal[_NoValueSet.NO_VALUE_SET]c                 C  s   || _ || _d| _d S )NFr,   )selfr0   r2   r   r   r   __init___   s   
zRunvarToken.__init__N)r0   r1   r2   r3   )r   r    r!   	__slots__r5   r   r   r   r   r+   \   s    r+   c                   @  s   e Zd ZU dZdZejZded< efd"d	d
Ze	d#ddZ
ed$ddZed%ddZefd&ddZd'ddZd(ddZd)dd Zd!S )*RunVarz[
    Like a :class:`~contextvars.ContextVar`, except scoped to the running event loop.
    _name_defaultz!Literal[_NoValueSet.NO_VALUE_SET]r*   namestrdefaultr3   c                 C  s   || _ || _d S Nr8   )r4   r;   r=   r   r   r   r5   n   s   
zRunVar.__init__r   dict[RunVar[T], T]c                 C  s6   t  j}zt| W S  ty   i  }t|< | Y S w r>   )r$   r   r&   KeyError)r4   r   run_varsr   r   r   _current_varst   s   
zRunVar._current_varsr   T | Dc                 C     d S r>   r   r4   r=   r   r   r   get}      z
RunVar.getr   c                 C  rD   r>   r   r4   r   r   r   rF      rG   %D | Literal[_NoValueSet.NO_VALUE_SET]c                 C  sZ   z| j |  W S  ty#   |tjur| Y S | jtjur!| j Y S Y nw td| j d)NzRun variable "z!" has no value and no default set)rB   r@   r7   r*   r:   LookupErrorr9   rE   r   r   r   rF      s   

r2   RunvarToken[T]c                 C  s&   | j }t| || tj}||| < |S r>   )rB   r+   rF   r7   r*   )r4   r2   current_varstokenr   r   r   set   s   z
RunVar.setrM   r   c                 C  sb   |j | ur	td|jrtd|jtju r&z| j| = W n ty%   Y nw |j| j| < d|_d S )Nz)This token does not belong to this RunVarz This token has already been usedT)r-   
ValueErrorr/   r.   r'   r*   rB   r@   )r4   rM   r   r   r   reset   s   

zRunVar.resetc                 C  s   d| j dS )Nz<RunVar name=>)r9   rH   r   r   r   __repr__   s   zRunVar.__repr__N)r;   r<   r=   r3   )r   r?   )r=   r   r   rC   )r   r   )r=   rI   r   rC   )r2   r   r   rK   )rM   rK   r   r   )r   r<   )r   r    r!   r"   r6   r'   r*   r#   r5   propertyrB   r	   rF   rN   rP   rR   r   r   r   r   r7   e   s"   
 

r7   )r   r   )r   r   )
__future__r   r(   dataclassesr   typingr   r   r   r   r   r	   weakrefr
   _core._eventloopr   abcr   r   r   r   r   r   r   r$   r&   r#   Enumr'   r+   r7   r   r   r   r   <module>   s(     




	