grthtrhthjhtyjytjytkergtrhtrjytjerhrfh4:24 29/09/2026a i6@sdZdZddlZddlZddlZddlZddlmZddl m Z ddl m Z ddl m Z dd l m Z e jZe jZe jZe jZejdZGd d d ZeZd d ZddZddZddZddZddZddddZz ddlZWneyYn 0ejZZdS)z.A Future class similar to the one in PEP 3148.)Future wrap_futureisfutureN) GenericAlias) base_futures)events) exceptions)format_helpersc@seZdZdZeZdZdZdZdZ dZ dZ dZ dZ ddddZejZddZd d ZeeZed d Zejd d ZddZddZd)ddZddZddZddZddZ ddZ!dddd Z"d!d"Z#d#d$Z$d%d&Z%d'd(Z&e&Z'dS)*ra,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.) NFloopcCs@|durt|_n||_g|_|jr )format __class____name__join _repr_inforrrr__repr__Zs  zFuture.__repr__cCsF|js dS|j}|jjd||d}|jr6|j|d<|j|dS)Nz exception was never retrieved)message exceptionfutureZsource_traceback)_Future__log_traceback _exceptionrrrrZcall_exception_handler)rexccontextrrr__del__^s  zFuture.__del__cCs|jSN)r$rrrr_log_tracebackpszFuture._log_tracebackcCst|rtdd|_dS)Nz'_log_traceback can only be set to FalseF)bool ValueErrorr$)rvalrrrr*tscCs|j}|durtd|S)z-Return the event loop the Future is bound to.Nz!Future object is not initialized.)r RuntimeErrorrrrrget_loopzszFuture.get_loopcCs2|jdurt}n t|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__rr&rrr_make_cancelled_errors    zFuture._make_cancelled_errorcCs,d|_|jtkrdSt|_||_|dS)zCancel the future and schedule callbacks. 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If the future is done and has an exception set, this exception is raised. zResult is not ready.FN) r6r8r5 _FINISHEDr InvalidStateErrorr$r%_resultr4rrrresults    z Future.resultcCs6|jtkr|}||jtkr*tdd|_|jS)a&Return the exception that was set on this future. The exception (or None if no exception was set) is returned only if the future is done. If the future has been cancelled, raises CancelledError. If the future isn't done yet, raises InvalidStateError. zException is not set.F)r6r8r5rBr rCr$r%r4rrrr"s   zFuture.exceptionr<cCsB|jtkr|jj|||dn |dur.t}|j||fdS)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)r6r7rr= contextvarsZ copy_contextrappend)rfnr'rrradd_done_callbacks  zFuture.add_done_callbackcs<fdd|jD}t|jt|}|r8||jdd<|S)z}Remove all instances of a callback from the "call when done" list. 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If the future is already done when this method is called, raises InvalidStateError. rPzPStopIteration interacts badly with generators and cannot be raised into a FutureTN) r6r7r rC isinstancetype StopIteration TypeErrorr%rBr9r$)rr"rrr set_exceptions   zFuture.set_exceptionccs,|sd|_|V|s$td|S)NTzawait wasn't used with future)rA_asyncio_future_blockingr.rErrrr __await__s zFuture.__await__)N)(r __module__ __qualname____doc__r7r6rDr%rrr0r2rWr$rrZ_future_repr_inforr r( classmethodr__class_getitem__propertyr*setterr/r5r;r9r@rArEr"rIrOrQrVrX__iter__rrrrrsB     rcCs*z |j}WntyYn0|S|jSr))r/AttributeErrorr)futr/rrr _get_loop(s   rccCs|r dS||dS)z?Helper setting the result only if the future was not cancelled.N)r@rQ)rbrErrr_set_result_unless_cancelled4srdcCsXt|}|tjjur tj|jS|tjjur8tj|jS|tjjurPtj|jS|SdSr))rS concurrentfuturesr1r args TimeoutErrorrC)r&Z exc_classrrr_convert_future_exc;s      ricCs^|s J|r||s(dS|}|durH|t|n|}||dS)z8Copy state from a future to a concurrent.futures.Future.N) rAr@r;set_running_or_notify_cancelr"rVrirErQ)resourcer"rErrr_set_concurrent_future_stateGs rlcCsl|s J|rdS|r$J|r6|n2|}|durV|t|n|}||dS)zqInternal helper to copy state from another Future. The other Future may be a concurrent.futures.Future. N)rAr@r;r"rVrirErQ)rkdestr"rErrr_copy_future_stateVs   rncststtjjstdts._set_statecs2|r.dusur"n jdSr))r@r;call_soon_threadsafe) destination) dest_looprk source_looprr_call_check_cancels z)_chain_future.._call_check_cancelcsJrdurrdSdus,ur8|n|dSr))r@Z is_closedrq)rk)rprsrrrtrr_call_set_states z&_chain_future.._call_set_state)rrRrerfrrUrcrI)rkrrrurvr)rprsrrrkrtr _chain_futurejs   rwr cCsNt|r |St|tjjs(Jd||dur8t}|}t|||S)z&Wrap concurrent.futures.Future object.z+concurrent.futures.Future is expected, got N) rrRrerfrrr Z create_futurerw)r#r Z new_futurerrrrs r) r[__all__concurrent.futuresrerFloggingrtypesrrrr r rr7r8rBDEBUGZ STACK_DEBUGrZ _PyFuturercrdrirlrnrwrZ_asyncio ImportErrorZ_CFuturerrrrs>         *