a
    ҏi	                     @   sf   d dl mZmZmZ d dlmZ d dlmZmZm	Z	m
Z
mZmZ d dlmZ dgZG dd deZdS )    )ExecutorFutureThreadPoolExecutor)TracebackType)AnyCallableDictOptionalTupleType)EventEmitterExecutorEventEmitterc                       s   e Zd ZdZdee d fddZeee	df e
ee	f ddd	ZdeddddZd dddZee eeee dddZ  ZS )r   a  An event emitter class which runs handlers in a `concurrent.futures`
    executor.

    By default, this class creates a default `ThreadPoolExecutor`, but
    a custom executor may also be passed in explicitly to, for instance,
    use a `ProcessPoolExecutor` instead.

    This class runs all emitted events on the configured executor. Errors
    captured by the resulting Future are automatically emitted on the
    `error` event. This is unlike the EventEmitter, which have no error
    handling.

    The underlying executor may be shut down by calling the `shutdown`
    method. Alternately you can treat the event emitter as a context manager:

    ```py
    with ExecutorEventEmitter() as ee:
        # Underlying executor open

        @ee.on('data')
        def handler(data):
            print(data)

        ee.emit('event')

    # Underlying executor closed
    ```

    Since the function call is scheduled on an executor, emit is always
    non-blocking.

    No effort is made to ensure thread safety, beyond using an executor.
    N)executorc                    s&   t t|   |r|| _nt | _d S N)superr   __init__	_executorr   )selfr   	__class__ =/home/Claro/venv/lib/python3.9/site-packages/pyee/executor.pyr   /   s    zExecutorEventEmitter.__init__.)fargskwargsc                    s8    j j|g|R i |}|jtd d fdd}d S )N)r   returnc                    s0   |   }t|tr  d| n|d ur,|d S )Nerror)	exception
isinstance	Exceptionemit)r   excr   r   r   	_callback>   s
    
z1ExecutorEventEmitter._emit_run.<locals>._callback)r   ZsubmitZadd_done_callbackr   )r   r   r   r   futurer#   r   r"   r   	_emit_run6   s    zExecutorEventEmitter._emit_runT)waitr   c                 C   s   | j j|d dS )z)Call `shutdown` on the internal executor.)r&   N)r   shutdown)r   r&   r   r   r   r'   F   s    zExecutorEventEmitter.shutdown)r   c                 C   s   | S r   r   r"   r   r   r   	__enter__K   s    zExecutorEventEmitter.__enter__)typevalue	tracebackr   c                 C   s   |    d S r   )r'   )r   r)   r*   r+   r   r   r   __exit__N   s    zExecutorEventEmitter.__exit__)N)T)__name__
__module____qualname____doc__r	   r   r   r   r
   r   r   strr%   boolr'   r(   r   r   r   r,   __classcell__r   r   r   r   r      s   "	


N)concurrent.futuresr   r   r   typesr   typingr   r   r   r	   r
   r   Z	pyee.baser   __all__r   r   r   r   r   <module>   s
    