python (3.12.0)
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Zd Zd Zd Zd ZdddZ ddl Z e j( xZZ y# e $ r Y yw xY w)z.A Future class similar to the one in PEP 3148.)Future wrap_futureisfuture N) GenericAlias ) base_futures)events)
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Zd Zd Z d Z d Z dddZ d Z d Z!d Z"d Z#e#Z$y)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 |t j | _ n|| _ g | _ | j j r.t j t j d | _ yy)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.
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extract_stacksys _getframe_source_tracebackselfr s C/BuggyBox/python/3.12.0/bootstrap/lib/python3.12/asyncio/futures.py__init__zFuture.__init__H s[ < ..0DJ DJ :: !%3%A%A
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))'2r c | j S r )r' r s r _log_tracebackzFuture._log_tracebackm s ###r c , |r t d d| _ y )Nz'_log_traceback can only be set to FalseF)
ValueErrorr' )r vals r r0 zFuture._log_tracebackq s FG G $ r c 8 | j }| t d |S )z-Return the event loop the Future is bound to.z!Future object is not initialized.)r RuntimeErrorr s r get_loopzFuture.get_loopw s! zz < BC C r c | j | j }d| _ |S | j t j }n t j | 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)_cancelled_exc_cancel_messager
CancelledError __context__r r, s r _make_cancelled_errorz Future._make_cancelled_error~ sr *%%C"&D J ' ++-C ++D,@,@AC -- "
r c ~ d| _ | j t k7 ryt | _ || _ | j y)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.
FT)r' _state_PENDING
_CANCELLEDr9 _Future__schedule_callbacks)r msgs r cancelz
Future.cancel s9 % ;;( " " !!#r c | j dd }|syg | j dd |D ]# \ }}| j j || | % y)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 callbackscallbackctxs r __schedule_callbackszFuture.__schedule_callbacks sR OOA& & >MHc JJ 4 = >r c ( | j t k( S )z(Return True if the future was cancelled.)r? rA r s r cancelledzFuture.cancelled s {{j((r c ( | j t k7 S )zReturn True if the future is done.
Done means either that a result / exception are available, or that the
future was cancelled.
)r? r@ r s r donez Future.done s {{h&&r c $ | j t k( r| j }|| j t k7 rt j
d d| _ | j %| j j | j | j S )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.F) r? rA r= _FINISHEDr
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_exception_tb_resultr< s r resultz
Future.result sx ;;* $,,.CI ;;) # ../EF F $ ?? &//001C1CD D||r c | j t k( r| j }|| j t k7 rt j
d d| _ | j S )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? rA r= rQ r
rR r' r( r< s r r$ zFuture.exception sS ;;* $,,.CI ;;) # ../FG G $ r rF c | j t k7 r | j j || | y|t j
}| j j ||f y)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.
rF N)r? r@ r rG contextvars copy_contextr append)r fnr- s r add_done_callbackzFuture.add_done_callback sR ;;( " JJ T7 ;%224 OO " "B= 1r c | j D cg c] \ }}||k7 r||f }}}t | j t | z
}|r|| j dd |S c c}}w )z}Remove all instances of a callback from the "call when done" list.
Returns the number of callbacks removed.
N)r len)r r\ frJ filtered_callbacks
removed_counts r remove_done_callbackzFuture.remove_done_callback sl /3oo *"*1c!"b !#h * * DOO,s3E/FF
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y)zMark the future done and set its result.
If the future is already done when this method is called, raises
InvalidStateError.
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set_resultzFuture.set_result sJ ;;( " ..$++ b/IJ J !!#r c L | j t k7 r$t j | j d| t |t
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y)zMark the future done and set an exception.
If the future is already done when this method is called, raises
InvalidStateError.
re zPStopIteration interacts badly with generators and cannot be raised into a FutureTN)r? r@ r
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set_exceptionzFuture.set_exception s ;;( " ..$++ b/IJ J i &! I ?m + A B
B# & 4 4 !!# # r c # K | j s d| _ | | j s t d | j S w)NTz await wasn't used with future)rO _asyncio_future_blockingr5 rV r s r __await__zFuture.__await__ s= yy{,0D )Jyy{ >? ?{{} s AA r )%r*
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s ,,c H | j ry| j | y)z?Helper setting the result only if the future was not cancelled.N)rM rf )r| rV s r _set_result_unless_cancelledr 7 s
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} | j | y)z8Copy state from a future to a concurrent.futures.Future.N)rM rD set_running_or_notify_cancelr$ rm r rV rf )r sourcer$ rV s r _set_concurrent_future_stater J st
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| y)zqInternal helper to copy state from another Future.
The other Future may be a concurrent.futures.Future.
N)rM rD r$ rm r rV rf )r destr$ rV s r _copy_future_stater Y se ~~
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ndd fd}fd}j | j | y)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 L t | r
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_set_statez!_chain_future.<locals>._set_state} s F uf - ( 7r c | j r3u rj y j j y y r )rM rD call_soon_threadsafe) destination dest_loopr source_loops r _call_check_cancelz)_chain_future.<locals>._call_check_cancel s< ""kY&>
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