/snap/core22/2411/usr/lib/python3.10/asyncio/__pycache__
Edit: /snap/core22/2411/usr/lib/python3.10/asyncio/__pycache__/futures.cpython-310.pyc (11887B)
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e y{ Y dS w e j ZZ dS )z.A Future class similar to the one in PEP 3148.)Future wrap_futureisfuture N) GenericAlias ) base_futures)events)
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d Zdd Zdd Zd)ddZ dd Z dd Z dd Z dd Z d d Z!dd d d Z"d!d" Z#d#d$ Z$d%d& Z%d'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.)
NFloopc C sD |du r
t | _n|| _g | _| j r ttd| _ dS dS )zInitialize 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 )
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zFuture.__init__c C s d | jjd| S )Nz<{} {}> )format __class____name__join
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zFuture.__repr__c C sF | j sd S | j}| jj d|| d}| jr| j|d< | j| d S )Nz exception was never retrieved)message exceptionfuturesource_traceback)_Future__log_traceback
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zFuture.__del__c C s | j S N)r& r r r r _log_tracebackp s zFuture._log_tracebackc C s |rt dd| _d S )Nz'_log_traceback can only be set to FalseF)
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c C s | j }|du r td|S )z-Return the event loop the Future is bound to.Nz!Future object is not initialized.)r RuntimeErrorr r r r get_loopz s zFuture.get_loopc C s2 | j du r
t }nt| j }| j|_d| _|S )zCreate the CancelledError to raise if the Future is cancelled.
This should only be called once when handling a cancellation since
it erases the saved context exception value.
N)_cancel_messager CancelledError_cancelled_exc __context__r r) r r r _make_cancelled_error s
z Future._make_cancelled_errorc C s, d| _ | jtkr
dS t| _|| _| dS )zCancel 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.
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z
Future.cancelc C sH | j dd }|s dS g | j dd< |D ]
\}}| jj|| |d qdS )zInternal: Ask the event loop to call all callbacks.
The callbacks are scheduled to be called as soon as possible. Also
clears the callback list.
Nr* )r r call_soon)r callbackscallbackctxr r r __schedule_callbacks s zFuture.__schedule_callbacksc C s
| j tkS )z(Return True if the future was cancelled.)r8 r: r r r r cancelled s
zFuture.cancelledc C s
| j tkS )zReturn True if the future is done.
Done means either that a result / exception are available, or that the
future was cancelled.
)r8 r9 r r r r done s
z Future.donec C sN | j tkr | }|| j tkrtdd| _| jdur$| j| j | j
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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) r8 r: r7 _FINISHEDr InvalidStateErrorr& r' with_traceback
_exception_tb_resultr6 r r r result s
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Future.resultc C s6 | j tkr | }|| j tkrtdd| _| jS )a& Return the exception that was set on this future.
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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)r8 r: r7 rF r rG r& r' r6 r r r r# s
zFuture.exceptionr> c C sD | j tkr| jj|| |d dS |du rt }| j||f dS )zAdd 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.
r> N)r8 r9 r r? contextvars copy_contextr append)r fnr* r r r add_done_callback s
zFuture.add_done_callbackc s< fdd| j D }t| j t| }|r || j dd< |S )z}Remove all instances of a callback from the "call when done" list.
Returns the number of callbacks removed.
c s g | ] \}}| kr||fqS r r ).0frB rO r r
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z/Future.remove_done_callback..N)r len)r rO filtered_callbacks
removed_countr rS r remove_done_callback s
zFuture.remove_done_callbackc C s8 | j tkrt| j d| || _t| _ | dS )zMark the future done and set its result.
If the future is already done when this method is called, raises
InvalidStateError.
: N)r8 r9 r rG rJ rF r; )r rK r r r
set_result s
zFuture.set_resultc C sj | j tkrt| j d| t|tr| }t|tu r"td|| _|j | _
t | _ | d| _
dS )zMark the future done and set an exception.
If the future is already done when this method is called, raises
InvalidStateError.
rY zPStopIteration interacts badly with generators and cannot be raised into a FutureTN)r8 r9 r rG
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zFuture.set_exceptionc c s. | s d| _| V | std| S )NTz await wasn't used with future)rE _asyncio_future_blockingr0 rK r r r r __await__ s zFuture.__await__r, )(r
__module__ __qualname____doc__r9 r8 rJ r' r r r2 r4 ra r& r r _future_repr_infor r! r+ classmethodr __class_getitem__propertyr- setterr1 r7 r= r; rD rE rK r# rP rX rZ r` rb __iter__r r r r r sD
r c C s& z| j }W | S ty Y | jS w r, )r1 AttributeErrorr )futr1 r r r _get_loop) s rn c C s | rdS | | dS )z?Helper setting the result only if the future was not cancelled.N)rD rZ )rm rK r r r _set_result_unless_cancelled5 s ro c C sT t | }|tjju rtj| j S |tjju r tj| j S |tjju r(tj| j S | S r, )r\
concurrentfuturesr3 r args TimeoutErrorrG )r) exc_classr r r _convert_future_exc< s ru c C s` | sJ | r| | sdS | }|dur%| t| dS | }| | dS )z8Copy state from a future to a concurrent.futures.Future.N) rE rD r= set_running_or_notify_cancelr# r` ru rK rZ )rp sourcer# rK r r r _set_concurrent_future_stateH s rx c C sp | sJ | r dS | rJ | r | dS | }|dur-|t| dS | }|| dS )zqInternal helper to copy state from another Future.
The other Future may be a concurrent.futures.Future.
N)rE rD r= r# r` ru rK rZ )rw destr# rK r r r _copy_future_stateW s rz c s t sttjjstdt s ttjjs tdt r&tndt r0tnddd 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 argumentNc S s$ t | r t|| d S t| | d S r, )r rz rx )r$ otherr r r
_set_state{ s z!_chain_future.._set_statec s8 | rd u s u r d S j d S d S r, )rD r= call_soon_threadsafe) destination) dest_looprw source_loopr r _call_check_cancel s
z)_chain_future.._call_check_cancelc sX rd ur rd S d u su r | d S r#d S | d S r, )rD is_closedr} )rw )r| r r~ r r r _call_set_state s z&_chain_future.._call_set_state)r r[ rp rq r r^ rn rP )rw r~ r r r )r| r r~ rw r r
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r r c C sN t | r| S t| tjjsJ d| |du r t }| }t| | |S )z&Wrap concurrent.futures.Future object.z+concurrent.futures.Future is expected, got N) r r[ rp rq r r r
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