U
    `z                     @   s  d Z ddlZddlZddlZddlZddlZddlZddlZddlZddl	Z	ddl
mZ ddl
mZ ddl
mZ ddl
mZ ddl
mZ dd	l
mZ dd
l
mZ ddl
mZ ddlmZ dZdZdZdZdZdZdZG dd dejZG dd dejZG dd deZG dd deZ G dd de!Z"G dd dej#Z$G dd  d ej%Z&G d!d" d"Z'G d#d$ d$ej(Z)e$Z*G d%d& d&ej+Z,G d'd( d(ej+Z-e-Z.dS ))z.Selector and proactor event loops for Windows.    N   )events)base_subprocess)futures)
exceptions)proactor_events)selector_events)tasks)windows_utils)logger)SelectorEventLoopProactorEventLoopIocpProactorDefaultEventLoopPolicyWindowsSelectorEventLoopPolicyWindowsProactorEventLoopPolicy    i  i  gMbP?g?c                       s^   e Zd ZdZdd fdd
Z fddZdd	 Z fd
dZ fddZ fddZ	  Z
S )_OverlappedFuturezSubclass of Future which represents an overlapped operation.

    Cancelling it will immediately cancel the overlapped operation.
    Nloopc                   s&   t  j|d | jr| jd= || _d S Nr   )super__init___source_traceback_ov)selfovr   	__class__ ,/usr/lib/python3.8/asyncio/windows_events.pyr   1   s    z_OverlappedFuture.__init__c                    sH   t   }| jd k	rD| jjr dnd}|dd| d| jjdd |S )NpendingZ	completedr   zoverlapped=<z, #x>)r   
_repr_infor   r"   insertaddressr   infostater   r    r!   r%   7   s
    

 z_OverlappedFuture._repr_infoc              
   C   sr   | j d krd S z| j   W nJ tk
rf } z,d|| d}| jrJ| j|d< | j| W 5 d }~X Y nX d | _ d S )Nz&Cancelling an overlapped future failedmessage	exceptionfuturesource_traceback)r   cancelOSErrorr   _loopcall_exception_handler)r   exccontextr    r    r!   _cancel_overlapped>   s    

z$_OverlappedFuture._cancel_overlappedc                    s   |    t  S N)r6   r   r0   r   r   r    r!   r0   N   s    z_OverlappedFuture.cancelc                    s   t  | |   d S r7   )r   set_exceptionr6   r   r-   r   r    r!   r9   R   s    z_OverlappedFuture.set_exceptionc                    s   t  | d | _d S r7   )r   
set_resultr   r   resultr   r    r!   r;   V   s    z_OverlappedFuture.set_result)__name__
__module____qualname____doc__r   r%   r6   r0   r9   r;   __classcell__r    r    r   r!   r   +   s   r   c                       sn   e Zd ZdZdd fdd
Zdd Z fdd	Zd
d Zdd Z fddZ	 fddZ
 fddZ  ZS )_BaseWaitHandleFuturez2Subclass of Future which represents a wait handle.Nr   c                   s8   t  j|d | jr| jd= || _|| _|| _d| _d S )Nr   r   T)r   r   r   r   _handle_wait_handle_registered)r   r   handlewait_handler   r   r    r!   r   ^   s    z_BaseWaitHandleFuture.__init__c                 C   s   t | jdt jkS Nr   )_winapiZWaitForSingleObjectrD   ZWAIT_OBJECT_0r8   r    r    r!   _polll   s    z_BaseWaitHandleFuture._pollc                    sd   t   }|d| jd | jd k	rB|  r4dnd}|| | jd k	r`|d| jd |S )Nzhandle=r#   ZsignaledZwaitingzwait_handle=)r   r%   appendrD   rK   rE   r(   r   r    r!   r%   q   s    



z _BaseWaitHandleFuture._repr_infoc                 C   s
   d | _ d S r7   )r   r   futr    r    r!   _unregister_wait_cb{   s    z)_BaseWaitHandleFuture._unregister_wait_cbc              
   C   s   | j s
d S d| _ | j}d | _zt| W n` tk
r } zB|jtjkrzd|| d}| jrd| j|d< | j	| W Y d S W 5 d }~X Y nX | 
d  d S NFz$Failed to unregister the wait handler+   r/   )rF   rE   _overlappedZUnregisterWaitr1   winerrorERROR_IO_PENDINGr   r2   r3   rO   r   rH   r4   r5   r    r    r!   _unregister_wait   s$    
z&_BaseWaitHandleFuture._unregister_waitc                    s   |    t  S r7   )rU   r   r0   r8   r   r    r!   r0      s    z_BaseWaitHandleFuture.cancelc                    s   |    t | d S r7   )rU   r   r9   r:   r   r    r!   r9      s    z#_BaseWaitHandleFuture.set_exceptionc                    s   |    t | d S r7   )rU   r   r;   r<   r   r    r!   r;      s    z _BaseWaitHandleFuture.set_result)r>   r?   r@   rA   r   rK   r%   rO   rU   r0   r9   r;   rB   r    r    r   r!   rC   [   s   
rC   c                       sF   e Zd ZdZdd fdd
Zdd Z fdd	Z fd
dZ  ZS )_WaitCancelFuturezoSubclass of Future which represents a wait for the cancellation of a
    _WaitHandleFuture using an event.
    Nr   c                   s   t  j||||d d | _d S )Nr   )r   r   _done_callback)r   r   eventrH   r   r   r    r!   r      s    z_WaitCancelFuture.__init__c                 C   s   t dd S )Nz'_WaitCancelFuture must not be cancelled)RuntimeErrorr8   r    r    r!   r0      s    z_WaitCancelFuture.cancelc                    s$   t  | | jd k	r | |  d S r7   )r   r;   rW   r<   r   r    r!   r;      s    
z_WaitCancelFuture.set_resultc                    s$   t  | | jd k	r | |  d S r7   )r   r9   rW   r:   r   r    r!   r9      s    
z_WaitCancelFuture.set_exception)	r>   r?   r@   rA   r   r0   r;   r9   rB   r    r    r   r!   rV      s
   rV   c                       s6   e Zd Zdd fdd
Z fddZdd Z  ZS )	_WaitHandleFutureNr   c                   s<   t  j||||d || _d| _td ddd | _d | _d S )Nr   TF)r   r   	_proactorZ_unregister_proactorrQ   ZCreateEvent_event
_event_fut)r   r   rG   rH   proactorr   r   r    r!   r      s
    z_WaitHandleFuture.__init__c                    sF   | j d k	r"t| j  d | _ d | _| j| j d | _t | d S r7   )	r\   rJ   CloseHandler]   r[   _unregisterr   r   rO   rM   r   r    r!   rO      s    
	z%_WaitHandleFuture._unregister_wait_cbc              
   C   s   | j s
d S d| _ | j}d | _zt|| j W n` tk
r } zB|jtjkr~d|| d}| jrh| j|d< | j	
| W Y d S W 5 d }~X Y nX | j| j| j| _d S rP   )rF   rE   rQ   ZUnregisterWaitExr\   r1   rR   rS   r   r2   r3   r[   _wait_cancelrO   r]   rT   r    r    r!   rU      s(    

z"_WaitHandleFuture._unregister_wait)r>   r?   r@   r   rO   rU   rB   r    r    r   r!   rZ      s   rZ   c                   @   s<   e Zd ZdZdd Zdd Zdd Zdd	 Zd
d ZeZ	dS )
PipeServerzXClass representing a pipe server.

    This is much like a bound, listening socket.
    c                 C   s,   || _ t | _d | _d | _| d| _d S NT)_addressweakrefWeakSet_free_instances_pipe_accept_pipe_future_server_pipe_handle)r   r'   r    r    r!   r      s
    
zPipeServer.__init__c                 C   s   | j | d }| _ |S )NF)rh   rj   )r   tmpr    r    r!   _get_unconnected_pipe   s    z PipeServer._get_unconnected_pipec              
   C   sr   |   rd S tjtjB }|r&|tjO }t| j|tjtjB tj	B tj
tjtjtjtj}t|}| j| |S r7   )closedrJ   ZPIPE_ACCESS_DUPLEXZFILE_FLAG_OVERLAPPEDZFILE_FLAG_FIRST_PIPE_INSTANCEZCreateNamedPiperd   ZPIPE_TYPE_MESSAGEZPIPE_READMODE_MESSAGEZ	PIPE_WAITZPIPE_UNLIMITED_INSTANCESr
   ZBUFSIZEZNMPWAIT_WAIT_FOREVERNULL
PipeHandlerg   add)r   firstflagshpiper    r    r!   rj     s(    
 
  
zPipeServer._server_pipe_handlec                 C   s
   | j d kS r7   )rd   r8   r    r    r!   rm     s    zPipeServer.closedc                 C   sR   | j d k	r| j   d | _ | jd k	rN| jD ]}|  q*d | _d | _| j  d S r7   )ri   r0   rd   rg   closerh   clear)r   rt   r    r    r!   ru     s    




zPipeServer.closeN)
r>   r?   r@   rA   r   rl   rj   rm   ru   __del__r    r    r    r!   rb      s   
rb   c                   @   s   e Zd ZdZdS )_WindowsSelectorEventLoopz'Windows version of selector event loop.N)r>   r?   r@   rA   r    r    r    r!   rx   ,  s   rx   c                       sH   e Zd ZdZd fdd	Z fddZdd Zd	d
 ZdddZ  Z	S )r   z2Windows version of proactor event loop using IOCP.Nc                    s   |d krt  }t | d S r7   )r   r   r   )r   r^   r   r    r!   r   3  s    zProactorEventLoop.__init__c              	      sf   z(| j d kst| | j t 	  W 5 | j d k	r`| j j}| j   |d k	rZ| j| d | _ X d S r7   )
Z_self_reading_futurer   r0   r[   r`   AssertionError	call_soonZ_loop_self_readingr   run_foreverr   r   r   r    r!   r{   8  s    

zProactorEventLoop.run_foreverc                    s8   | j |}|I d H }| }| j||d|id}||fS )Naddrextra)r[   connect_pipe_make_duplex_pipe_transport)r   protocol_factoryr'   frt   protocoltransr    r    r!   create_pipe_connectionG  s    
z(ProactorEventLoop.create_pipe_connectionc                    s.   t  d fdd	 gS )Nc              
      s  d }zn| rN|   }j|  r4|  W d S  }j||d id  }|d krdW d S j|} W n t	k
r } zF|r|
 dkrd||d |  njrtjd|dd W 5 d }~X Y n2 tjk
r   |r|  Y nX | _|  d S )	Nr}   r~   r   zPipe accept failed)r,   r-   rt   zAccept pipe failed on pipe %rT)exc_info)r=   rg   discardrm   ru   r   rl   r[   accept_piper1   filenor3   Z_debugr   Zwarningr   CancelledErrorri   add_done_callback)r   rt   r   r4   r'   loop_accept_piper   r   Zserverr    r!   r   R  sH      
 z>ProactorEventLoop.start_serving_pipe.<locals>.loop_accept_pipe)N)rb   rz   )r   r   r'   r    r   r!   start_serving_pipeO  s    (
z$ProactorEventLoop.start_serving_pipec	              	      s   |   }
t| |||||||f|
|d|	}z|
I d H  W nD ttfk
rT    Y n, tk
r~   |  | I d H   Y nX |S )N)waiterr   )create_future_WindowsSubprocessTransport
SystemExitKeyboardInterruptBaseExceptionru   Z_wait)r   r   argsshellstdinstdoutstderrbufsizer   kwargsr   Ztranspr    r    r!   _make_subprocess_transport}  s*    
    z,ProactorEventLoop._make_subprocess_transport)N)N)
r>   r?   r@   rA   r   r{   r   r   r   rB   r    r    r   r!   r   0  s   0 r   c                   @   s   e Zd ZdZd;ddZdd Zdd Zd	d
 Zd<ddZdd Z	d=ddZ
d>ddZd?ddZd@ddZdAddZdd Zdd Zdd  Zd!d" Zd#d$ ZdBd%d&Zd'd( Zd)d* Zd+d, Zd-d. Zd/d0 Zd1d2 ZdCd3d4Zd5d6 Zd7d8 Zd9d: ZdS )Dr   z#Proactor implementation using IOCP.r   c                 C   sD   d | _ g | _ttjtd|| _i | _t	 | _
g | _t	 | _d S rI   )r2   _resultsrQ   CreateIoCompletionPortINVALID_HANDLE_VALUErn   _iocp_cachere   rf   rF   _unregistered_stopped_serving)r   Zconcurrencyr    r    r!   r     s       
zIocpProactor.__init__c                 C   s   | j d krtdd S )NzIocpProactor is closed)r   rY   r8   r    r    r!   _check_closed  s    
zIocpProactor._check_closedc                 C   sF   dt | j dt | j g}| jd kr0|d d| jjd|f S )Nzoverlapped#=%sz
result#=%srm   z<%s %s> )lenr   r   r   rL   r   r>   join)r   r)   r    r    r!   __repr__  s    

zIocpProactor.__repr__c                 C   s
   || _ d S r7   )r2   )r   r   r    r    r!   set_loop  s    zIocpProactor.set_loopNc                 C   s    | j s| | | j }g | _ |S r7   )r   rK   )r   timeoutrk   r    r    r!   select  s
    
zIocpProactor.selectc                 C   s   | j  }|| |S r7   )r2   r   r;   )r   valuerN   r    r    r!   _result  s    

zIocpProactor._resultr   c                 C   s~   |  | tt}z4t|tjr6|| || n|| | W n t	k
rf   | 
d Y S X dd }| |||S )N    c              
   S   sR   z
|  W S  tk
rL } z$|jtjtjfkr:t|j n W 5 d }~X Y nX d S r7   	getresultr1   rR   rQ   ZERROR_NETNAME_DELETEDZERROR_OPERATION_ABORTEDConnectionResetErrorr   r   keyr   r4   r    r    r!   finish_recv  s    
z&IocpProactor.recv.<locals>.finish_recv)_register_with_iocprQ   
Overlappedrn   
isinstancesocketZWSARecvr   ZReadFileBrokenPipeErrorr   	_registerr   connnbytesrr   r   r   r    r    r!   recv  s    


zIocpProactor.recvc                 C   s~   |  | tt}z4t|tjr6|| || n|| | W n t	k
rf   | 
d Y S X dd }| |||S )Nr   c              
   S   sR   z
|  W S  tk
rL } z$|jtjtjfkr:t|j n W 5 d }~X Y nX d S r7   r   r   r    r    r!   r     s    
z+IocpProactor.recv_into.<locals>.finish_recv)r   rQ   r   rn   r   r   ZWSARecvIntor   ZReadFileIntor   r   r   )r   r   bufrr   r   r   r    r    r!   	recv_into  s    


zIocpProactor.recv_intoc                 C   s`   |  | tt}z|| || W n tk
rH   | d Y S X dd }| |||S )N)r   Nc              
   S   sR   z
|  W S  tk
rL } z$|jtjtjfkr:t|j n W 5 d }~X Y nX d S r7   r   r   r    r    r!   r     s    
z*IocpProactor.recvfrom.<locals>.finish_recv)	r   rQ   r   rn   ZWSARecvFromr   r   r   r   r   r    r    r!   recvfrom  s    


zIocpProactor.recvfromc                 C   s>   |  | tt}|| ||| dd }| |||S )Nc              
   S   sR   z
|  W S  tk
rL } z$|jtjtjfkr:t|j n W 5 d }~X Y nX d S r7   r   r   r    r    r!   finish_send   s    
z(IocpProactor.sendto.<locals>.finish_send)r   rQ   r   rn   Z	WSASendTor   r   )r   r   r   rr   r}   r   r   r    r    r!   sendto  s
    


zIocpProactor.sendtoc                 C   sZ   |  | tt}t|tjr4|| || n|| | dd }| 	|||S )Nc              
   S   sR   z
|  W S  tk
rL } z$|jtjtjfkr:t|j n W 5 d }~X Y nX d S r7   r   r   r    r    r!   r     s    
z&IocpProactor.send.<locals>.finish_send)
r   rQ   r   rn   r   r   ZWSASendr   Z	WriteFiler   )r   r   r   rr   r   r   r    r    r!   send  s    


zIocpProactor.sendc                    sv   |   | j tt}|     fdd}dd }| ||}|| }t	j
|| jd |S )Nc                    sD   |   td } tjtj|  	
     fS )Nz@P)r   structZpackr   
setsockoptr   
SOL_SOCKETrQ   ZSO_UPDATE_ACCEPT_CONTEXT
settimeoutZ
gettimeoutZgetpeername)r   r   r   r   r   listenerr    r!   finish_accept&  s     z*IocpProactor.accept.<locals>.finish_acceptc                    s4   z| I d H  W n  t jk
r.   |   Y nX d S r7   )r   r   ru   )r.   r   r    r    r!   accept_coro/  s
    z(IocpProactor.accept.<locals>.accept_coror   )r   _get_accept_socketfamilyrQ   r   rn   ZAcceptExr   r   r	   Zensure_futurer2   )r   r   r   r   r   r.   coror    r   r!   accept   s    

	
zIocpProactor.acceptc              
      s    j tjkr4t  | | j }|d  |S | 	  zt
   j W nB tk
r } z$|jtjkrt   d dkr W 5 d }~X Y nX tt}|  |  fdd}| | |S )Nr   r   c                    s   |    tjtjd  S rI   )r   r   r   r   rQ   ZSO_UPDATE_CONNECT_CONTEXTr   r   r   r   r    r!   finish_connectR  s     z,IocpProactor.connect.<locals>.finish_connect)typer   Z
SOCK_DGRAMrQ   Z
WSAConnectr   r2   r   r;   r   Z	BindLocalr   r1   rR   errnoZ	WSAEINVALZgetsocknamer   rn   Z	ConnectExr   )r   r   r'   rN   er   r   r    r   r!   connect<  s"    



zIocpProactor.connectc           	   	   C   sb   |  | tt}|d@ }|d? d@ }|| t| |||dd dd }| |||S )Nr       r   c              
   S   sR   z
|  W S  tk
rL } z$|jtjtjfkr:t|j n W 5 d }~X Y nX d S r7   r   r   r    r    r!   finish_sendfilee  s    
z.IocpProactor.sendfile.<locals>.finish_sendfile)	r   rQ   r   rn   ZTransmitFiler   msvcrtZget_osfhandler   )	r   Zsockfileoffsetcountr   Z
offset_lowZoffset_highr   r    r    r!   sendfile[  s    


   	zIocpProactor.sendfilec                    sJ   |    tt}|  }|r0|  S  fdd}| | |S )Nc                    s   |    S r7   )r   r   rt   r    r!   finish_accept_pipe{  s    z4IocpProactor.accept_pipe.<locals>.finish_accept_pipe)r   rQ   r   rn   ZConnectNamedPiper   r   r   )r   rt   r   Z	connectedr   r    r   r!   r   p  s    


zIocpProactor.accept_pipec              
      sr   t }zt|}W qhW n0 tk
rF } z|jtjkr6 W 5 d }~X Y nX t|d t}t	|I d H  qt
|S )N   )CONNECT_PIPE_INIT_DELAYrQ   ZConnectPiper1   rR   ZERROR_PIPE_BUSYminCONNECT_PIPE_MAX_DELAYr	   sleepr
   ro   )r   r'   ZdelayrG   r4   r    r    r!   r     s    
zIocpProactor.connect_pipec                 C   s   |  ||dS )zWait for a handle.

        Return a Future object. The result of the future is True if the wait
        completed, or False if the wait did not complete (on timeout).
        F)_wait_for_handle)r   rG   r   r    r    r!   wait_for_handle  s    zIocpProactor.wait_for_handlec                 C   s   |  |d d}||_|S rc   )r   rW   )r   rX   Zdone_callbackrN   r    r    r!   ra     s    zIocpProactor._wait_cancelc                    s   |    |d krtj}nt|d }tt}t|| j	|j
|}|r\t|||| jd nt|||| | jd  jr~ jd=  fdd} |d|f| j|j
<  S )N     @@r   r   c                    s      S r7   )rK   r   r   r    r!   finish_wait_for_handle  s    z=IocpProactor._wait_for_handle.<locals>.finish_wait_for_handler   )r   rJ   INFINITEmathceilrQ   r   rn   ZRegisterWaitWithQueuer   r'   rV   r2   rZ   r   r   )r   rG   r   Z
_is_cancelmsr   rH   r   r    r   r!   r     s*    
   
	zIocpProactor._wait_for_handlec                 C   s0   || j kr,| j | t| | jdd d S rI   )rF   rp   rQ   r   r   r   r   objr    r    r!   r     s    
z IocpProactor._register_with_iocpc              
   C   s   |    t|| jd}|jr$|jd= |jsrz|d d |}W n, tk
rf } z|| W 5 d }~X Y nX || ||||f| j|j	< |S r   )
r   r   r2   r   r"   r1   r9   r;   r   r'   )r   r   r   callbackr   r   r   r    r    r!   r     s    

zIocpProactor._registerc                 C   s   |    | j| dS )a  Unregister an overlapped object.

        Call this method when its future has been cancelled. The event can
        already be signalled (pending in the proactor event queue). It is also
        safe if the event is never signalled (because it was cancelled).
        N)r   r   rL   r|   r    r    r!   r`     s    zIocpProactor._unregisterc                 C   s   t  |}|d |S rI   )r   r   )r   r   sr    r    r!   r     s    

zIocpProactor._get_accept_socketc                 C   s  |d krt }n0|dk r tdnt|d }|t kr>tdt| j|}|d krXqZd}|\}}}}z| j|\}}	}
}W nX t	k
r   | j
 r| j
dd||||f d |dtjfkrt| Y q>Y nX |
| jkr|  q>| s>z||||	}W n: tk
r@ } z|| | j| W 5 d }~X Y q>X || | j| q>| jD ]}	| j|	jd  q`| j  d S )Nr   znegative timeoutr   ztimeout too bigz8GetQueuedCompletionStatus() returned an unexpected eventz)err=%s transferred=%s key=%#x address=%#x)r,   status)r   
ValueErrorr   r   rQ   ZGetQueuedCompletionStatusr   r   popKeyErrorr2   Z	get_debugr3   r   rJ   r_   r   r0   Zdoner1   r9   r   rL   r;   r   r'   rv   )r   r   r   r   errZtransferredr   r'   r   r   r   r   r   r   r    r    r!   rK     sL    


	






zIocpProactor._pollc                 C   s   | j | d S r7   )r   rp   r   r    r    r!   _stop_serving5  s    zIocpProactor._stop_servingc                 C   s  | j d krd S t| j D ]\}\}}}}| r6qt|trBqz|  W q tk
r } z6| j	d k	rd||d}|j
r|j
|d< | j	| W 5 d }~X Y qX qd}t }	|	| }
| jr|
t krtd| t |	  t | }
| | qg | _t| j  d | _ d S )NzCancelling a future failedr+   r/   g      ?z,%r is running after closing for %.1f seconds)r   listr   itemsZ	cancelledr   rV   r0   r1   r2   r   r3   time	monotonicr   debugrK   r   rJ   r_   )r   r'   rN   r   r   r   r4   r5   Z
msg_updateZ
start_timeZnext_msgr    r    r!   ru   ;  s@    



  
zIocpProactor.closec                 C   s   |    d S r7   )ru   r8   r    r    r!   rw   j  s    zIocpProactor.__del__)r   )N)r   )r   )r   )r   N)r   )N)N)r>   r?   r@   rA   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   ra   r   r   r   r`   r   rK   r   ru   rw   r    r    r    r!   r     s8   








"
 

7/r   c                   @   s   e Zd Zdd ZdS )r   c           
         sP   t j|f|||||d| _ fdd} jjt jj}	|	| d S )N)r   r   r   r   r   c                    s    j  } | d S r7   )_procZpollZ_process_exited)r   
returncoder8   r    r!   r   u  s    
z4_WindowsSubprocessTransport._start.<locals>.callback)	r
   Popenr   r2   r[   r   intrD   r   )
r   r   r   r   r   r   r   r   r   r   r    r8   r!   _startp  s       z"_WindowsSubprocessTransport._startN)r>   r?   r@   r  r    r    r    r!   r   n  s   r   c                   @   s   e Zd ZeZdS )r   N)r>   r?   r@   r   _loop_factoryr    r    r    r!   r     s   r   c                   @   s   e Zd ZeZdS )r   N)r>   r?   r@   r   r  r    r    r    r!   r     s   r   )/rA   rQ   rJ   r   r   r   r   r   r   re    r   r   r   r   r   r   r	   r
   logr   __all__rn   r   ZERROR_CONNECTION_REFUSEDZERROR_CONNECTION_ABORTEDr   r   ZFuturer   rC   rV   rZ   objectrb   ZBaseSelectorEventLooprx   ZBaseProactorEventLoopr   r   ZBaseSubprocessTransportr   r   ZBaseDefaultEventLoopPolicyr   r   r   r    r    r    r!   <module>   sR   0J4;a   `