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mZmZ er\d dlmZ ejejd	d	d
�G dd„ dƒƒƒZdS )é    )Úannotations)Údefaultdict)Úasynccontextmanager)ÚTYPE_CHECKINGNé   )ÚEventÚ_coreÚ_util)ÚAsyncIteratorF)ÚeqÚslotsc                   @  sl   e Zd ZU dZejdd„ dd�Zded< ejedd�Z	ded	< ejddd
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ded< edddœdd„ƒZdS )Ú	SequenceraØ  A convenience class for forcing code in different tasks to run in an
    explicit linear order.

    Instances of this class implement a ``__call__`` method which returns an
    async context manager. The idea is that you pass a sequence number to
    ``__call__`` to say where this block of code should go in the linear
    sequence. Block 0 starts immediately, and then block N doesn't start until
    block N-1 has finished.

    Example:
      An extremely elaborate way to print the numbers 0-5, in order::

         async def worker1(seq):
             async with seq(0):
                 print(0)
             async with seq(4):
                 print(4)

         async def worker2(seq):
             async with seq(2):
                 print(2)
             async with seq(5):
                 print(5)

         async def worker3(seq):
             async with seq(1):
                 print(1)
             async with seq(3):
                 print(3)

         async def main():
            seq = trio.testing.Sequencer()
            async with trio.open_nursery() as nursery:
                nursery.start_soon(worker1, seq)
                nursery.start_soon(worker2, seq)
                nursery.start_soon(worker3, seq)

    c                   C  s   t tƒS )N)r   r   © r   r   ú=E:\soccer\ml_env\Lib\site-packages\trio/testing/_sequencer.pyÚ<lambda>:   ó    zSequencer.<lambda>F)ÚfactoryÚinitzdefaultdict[int, Event]Ú_sequence_pointszset[int]Ú_claimed)Údefaultr   ÚboolÚ_brokenÚintzAsyncIterator[None])ÚpositionÚreturnc              	   C sÔ   || j v rtd|› �ƒ‚| jr&tdƒ‚| j  |¡ |dkržz| j|  ¡ I d H  W n< tjyŽ   d| _| j ¡ D ]}| 	¡  qrtdƒd ‚Y n0 | jržtdƒ‚zd V  W | j|d   	¡  n| j|d   	¡  0 d S )Nz"Attempted to reuse sequence point zsequence broken!r   Tz+Sequencer wait cancelled -- sequence brokené   )
r   ÚRuntimeErrorr   Úaddr   Úwaitr   Z	CancelledÚvaluesÚset)Úselfr   Úeventr   r   r   Ú__call__@   s,    

ÿþzSequencer.__call__N)Ú__name__Ú
__module__Ú__qualname__Ú__doc__ÚattrsÚfieldr   Ú__annotations__r!   r   r   r   r$   r   r   r   r   r      s   
'þr   )Ú
__future__r   Úcollectionsr   Ú
contextlibr   Útypingr   r)   Ú r   r   r	   Úcollections.abcr
   ÚfinalZdefiner   r   r   r   r   Ú<module>   s   