$81 GRAYBYTE WORDPRESS FILE MANAGER $28

U

i�fb3�@s�dZd
Z
ddlZddlZddlZddlZddlmZ
ddlm	Z	
ddlm
Z

ddlmZ
ejZej
Z
ejZejZejdZGd	d
�d
�ZeZdd�Zd
d�Zdd�Zdd�Zdd�Zdd�Zdd�
dd�ZzddlZWnek
r�


YnXejZZdS)z.A Future class similar to the one in PEP 3148.)�Future�wrap_future�isfuture�N�
)
�base_futures)
�events)
�
exceptions)
�format_helpersc@s�eZ
dZd
ZeZdZdZdZdZ	dZ
dZdd�
dd�Ze
jZdd�Zd	d
�Zedd��
Zejd
d��
Zdd�Zdd�Zdd�Zdd�Zdd�Zdd�Zdd�Zdd�
dd�Zdd �Zd!d"�Zd#d$�Zd%d&�Z e Z!dS)'r
a,This class is *almost* compatible with concurrent.futures.Future.

    Differences:

    - This class is not thread-safe.

    - result() and exception() do not take a timeout argument and
      raise an exception when the future isn't done yet.

    - Callbacks registered with add_done_callback() are always called
      via the event loop's call_soon().

    - This class is not compatible with the wait() and as_completed()
      methods in the concurrent.futures package.

    (In Python 3.4 or later we may be able to unify the implementations.)
    NF�
�loopc

Cs@|
d
krt�
�|_n|
|_g|_|j��r<t�t�d�
�
|_	d
S)z�Initialize the future.

        The optional event_loop argument allows explicitly setting the event
        loop object used by the future. If it's not provided, the future uses
        the default event loop.
        Nr)
r�get_event_loop�_loop�
_callbacksZ	get_debugr	�
extract_stack�sys�	_getframe�_source_traceback��selfr�r�4/opt/alt/python38/lib64/python3.8/asyncio/futures.py�__init__Ds





�zFuture.__init__c

Csd
�|j
jd�|���
�S)Nz<{} {}>�
 )�format�	__class__�__name__�join�
_repr_info�
rrrr�__repr__Vs


�zFuture.__repr__c
CsF|js
dS|j
}
|jj�d
�|
|d�}|jr6|j|d<|j�|�

dS)Nz exception was never retrieved)�message�	exception�futureZsource_traceback)�_Future__log_traceback�
_exceptionrrrr
Zcall_exception_handler)r�exc�contextrrr�__del__Zs



�


zFuture.__del__c


Cs|jS�
N)
r#rrrr�_log_tracebackjszFuture._log_tracebackcCst|
�
rt
d
�
�
d|_dS)Nz'_log_traceback can only be set to FalseF)�bool�
ValueErrorr#)r�valrrrr)ns

c
Cs|j}
|
d
krt
d�
�
|
S)z-Return the event loop the Future is bound to.Nz!Future object is not initialized.)r
�RuntimeErrorrrrr�get_loopts


zFuture.get_loopc

Cs&d
|_|j
tkrd
St|_
|��
dS)z�Cancel the future and schedule callbacks.

        If the future is already done or cancelled, return False.  Otherwise,
        change the future's state to cancelled, schedule the callbacks and
        return True.
        FT)r#�_state�_PENDING�
_CANCELLED�_Future__schedule_callbacksrrrr�cancel{s





z
Future.cancelc
CsH|jd
d
�}
|
sd
Sg|jd
d
�<|
D]\}}|j
j|||d�
q(d
S)z�Internal: Ask the event loop to call all callbacks.

        The callbacks are scheduled to be called as soon as possible. Also
        clears the callback list.
        N�
r&)rr
�	call_soon)rZ	callbacks�callback�ctxrrrZ__schedule_callbacks�s



zFuture.__schedule_callbacksc

Cs
|jt
kS)
z(Return True if the future was cancelled.)r/r1rrrr�	cancelled�szFuture.cancelledc

Cs
|jt
kS)
z�Return True if the future is done.

        Done means either that a result / exception are available, or that the
        future was cancelled.
        )r/r0rrrr�done�szFuture.donec

Cs@|jt
krtj�
|jtkr$t�d
�
�
d|_|jdk	r:|j�
|jS)a
Return the result this future represents.

        If the future has been cancelled, raises CancelledError.  If the
        future's result isn't yet available, raises InvalidStateError.  If
        the future is done and has an exception set, this exception is raised.
        zResult is not ready.FN)	r/r1r�CancelledError�	_FINISHED�InvalidStateErrorr#r$�_resultrrrr�result�s










z
Future.resultc

Cs0|jt
krtj�
|jtkr$t�d
�
�
d|_|jS)a&
Return the exception that was set on this future.

        The exception (or None if no exception was set) is returned only if
        the future is done.  If the future has been cancelled, raises
        CancelledError.  If the future isn't done yet, raises
        InvalidStateError.
        zException is not set.F)r/r1rr:r;r<r#r$rrrrr!�s







zFuture.exceptionr4c
CsB|jt
kr|jj|
||d
�
n |dkr.t��}|j�|
|f�

dS)z�Add a callback to be run when the future becomes done.

        The callback is called with a single argument - the future object. If
        the future is already done when this is called, the callback is
        scheduled with call_soon.
        r4N)r/r0r
r5�contextvarsZcopy_contextr�append)r�fnr&rrr�add_done_callback�s




zFuture.add_done_callbackcs<�f
d
d�|jD�
}t
|j�
t
|�
}|r8||jdd�<|S)z}Remove all instances of a callback from the "call when done" list.

        Returns the number of callbacks removed.
        c
s g|]\}
}|
�kr|
|f�qSrr)�.0�
fr7�
rArr�
<listcomp>�s

�z/Future.remove_done_callback.<locals>.<listcomp>N)r�len)rrAZfiltered_callbacksZ
removed_countrrEr�remove_done_callback�s

�


zFuture.remove_done_callbackcCs8|jt
kr t�|j�d
|���
�
|
|_t|_|��
dS)z�Mark the future done and set its result.

        If the future is already done when this method is called, raises
        InvalidStateError.
        �: N)r/r0rr<r=r;r2)rr>rrr�
set_result�s





zFuture.set_resultcCsb|jt
kr t�|j�d
|���
�
t|
t�r0|
�}
t|
�
tkrDtd�
�
|
|_t	|_|�
�
d|_dS)z�Mark the future done and set an exception.

        If the future is already done when this method is called, raises
        InvalidStateError.
        rIzPStopIteration interacts badly with generators and cannot be raised into a FutureTN)r/r0rr<�
isinstance�type�
StopIteration�	TypeErrorr$r;r2r#)rr!rrr�
set_exception�s









zFuture.set_exceptionc

cs,|��sd
|_
|V
|��s$td�
�
|��S)NTzawait wasn't used with future)r9�_asyncio_future_blockingr-r>rrrr�	__await__

s





zFuture.__await__)"r�
__module__�__qualname__�__doc__r0r/r=r$r
rrPr#rrZ_future_repr_inforrr'�propertyr)�setterr.r3r2r8r9r>r!rBrHrJrOrQ�__iter__rrrrr
s:








r
c
Cs,z
|j}
Wnt
k
r


YnX|
�S|jSr()r.�AttributeErrorr
)�futr.rrr�	_get_loop
s




rZcCs|��rd
S|�
|
�

d
S)z?Helper setting the result only if the future was not cancelled.N)r8rJ)rYr>rrr�_set_result_unless_cancelled
s

r[c
CsXt|�
}
|
t
jjkr tj|j�S|
t
jjkr8tj|j�S|
t
jjkrPtj|j�S|SdSr()rL�
concurrent�futuresr:r�args�TimeoutErrorr<)r%Z	exc_classrrr�_convert_future_exc#
s






r`cCsR|
��r|�
�
|��sd
S|
��}|d
k	r<|�t|�
�

n|
��}|�|�

d
S)z8Copy state from a future to a concurrent.futures.Future.N)r8r3Zset_running_or_notify_cancelr!rOr`r>rJ)r\�sourcer!r>rrr�_set_concurrent_future_state/
s






rbcCsT|
��rd
S|��r|
�
�
n2|��}|d
k	r>|
�t|�
�

n|��}|
�|�

d
S)zqInternal helper to copy state from another Future.

    The other Future may be a concurrent.futures.Future.
    N)r8r3r!rOr`r>rJ)ra�destr!r>rrr�_copy_future_state>
s





rdcs�t��
st
�tjj�std
�
�
t��
s<t
�tjj�s<td�
�
t��
rLt��
nd�t��
r`t��
nd�
dd���
��fdd�}��
��fdd	�}��|�

��|�

dS)
a
Chain two futures so that when one completes, so does the other.

    The result (or exception) of source will be copied to destination.
    If destination is cancelled, source gets cancelled too.
    Compatible with both asyncio.Future and concurrent.futures.Future.
    z(A future is required for source argumentz-A future is required for destination argumentNcSs"t|�
rt
|
|�
n
t||
�
dSr()rrdrb)r"�otherrrr�
_set_stateb
s

z!_chain_future.<locals>._set_statec

s2|��r.�dks��kr"�
�
�
n���
j
�

dSr()r8r3�call_soon_threadsafe)
�destination)�	dest_loopra�source_looprr�_call_check_cancelh
s



z)_chain_future.<locals>._call_check_cancelc

sJ���r�
dk	r�
�
�rdS�
dks,�
�kr8��|�
n�
���|�
dSr()r8Z	is_closedrg)
ra)rfrirhrjrr�_call_set_stateo
s

�
�

z&_chain_future.<locals>._call_set_state)rrKr\r]r
rNrZrB)rarhrkrlr)rfrirhrarjr�
_chain_futureR
s
�

�

	

rmr
c

Cs2t|�
r|S|
d
krt
��}
|
��}t||�
|S)z&Wrap concurrent.futures.Future object.N)rrrZ
create_futurerm)r"rZ
new_futurerrrr|
s





r)rT�__all__Zconcurrent.futuresr\r?Zloggingr�rrrr	rr0r1r;�DEBUGZSTACK_DEBUGr
Z	_PyFuturerZr[r`rbrdrmrZ_asyncio�ImportErrorZ_CFuturerrrr�<module>
s:








q*