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3
l_                 @   s  d dl mZmZmZ d dlZd dlZd dlZd dlZd dlZG dd de	Z
e
Ze
Zdd Zdd Zd	d
 Zdd Zdd ZeedrejZn
d$ddZeedrd%ddZn
d&ddZG dd deZeedrejZnejZdd ZG dd deZG dd deZd d! Zd"d# Z dS )'    )absolute_importdivisionprint_functionNc               @   s   e Zd ZdS )CryptographyDeprecationWarningN)__name__
__module____qualname__ r	   r	   /usr/lib64/python3.6/utils.pyr      s   r   c             C   s   t |tstdj| d S )Nz{} must be bytes)
isinstancebytes	TypeErrorformat)namevaluer	   r	   r
   _check_bytes   s    
r   c             C   s4   yt | W n" tk
r.   tdj| Y nX d S )Nz{} must be bytes-like)
memoryviewr   r   )r   r   r	   r	   r
   _check_byteslike    s    r   c                s   t  fddS )Nc                s
   t |  S )N)getattr)self)r   r	   r
   <lambda>(   s    z$read_only_property.<locals>.<lambda>)property)r   r	   )r   r
   read_only_property'   s    r   c                s    fdd}|S )Nc                s   t  |   j|  | S )N)verify_interfaceregister)klass)ifacer	   r
   register_decorator,   s    

z.register_interface.<locals>.register_decoratorr	   )r   r   r	   )r   r
   register_interface+   s    r   c                s    fdd}|S )Nc                s   rt  |   j|  | S )N)r   r   )r   )r   	predicater	   r
   r   5   s    

z1register_interface_if.<locals>.register_decoratorr	   )r   r   r   r	   )r   r   r
   register_interface_if4   s    r    
from_bytesFc             C   s   t tj| dS )N   )intbinasciiZhexlify)data	byteorderZsignedr	   r	   r
   int_from_bytesB   s    r'   to_bytesc             C   s    | j |p| j d d pddS )N         Zbig)r(   
bit_length)integerlengthr	   r	   r
   int_to_bytesK   s    r/   c             C   s:   d|  }|d krt |}n|d }tj|j||d@  S )Nz%x   r+   )lenr$   Z	unhexlifyzfill)r-   r.   Z
hex_stringnr	   r	   r
   r/   S   s
    
c               @   s   e Zd ZdS )InterfaceNotImplementedN)r   r   r   r	   r	   r	   r
   r4   \   s   r4   	signaturec             C   sz   xt| j D ]j}t||s&tdj||tt| |tjr:qtt| |}tt||}||krtdj||||qW d S )Nz{} is missing a {!r} methodzK{}.{}'s signature differs from the expected. Expected: {!r}. Received: {!r})	__abstractmethods__hasattrr4   r   r   r   abcabstractpropertyr5   )r   r   methodZsigactualr	   r	   r
   r   f   s    
r   c               @   s   e Zd Zdd ZdS )_DeprecatedValuec             C   s   || _ || _|| _d S )N)r   messagewarning_class)r   r   r=   r>   r	   r	   r
   __init__y   s    z_DeprecatedValue.__init__N)r   r   r   r?   r	   r	   r	   r
   r<   x   s   r<   c               @   s4   e Zd Zdd Zdd Zdd Zdd Zd	d
 ZdS )_ModuleWithDeprecationsc             C   s   || j d< d S )N_module)__dict__)r   moduler	   r	   r
   r?      s    z _ModuleWithDeprecations.__init__c             C   s4   t | j|}t|tr0tj|j|jdd |j}|S )Nr0   )
stacklevel)	r   rA   r   r<   warningswarnr=   r>   r   )r   attrobjr	   r	   r
   __getattr__   s
    
z#_ModuleWithDeprecations.__getattr__c             C   s   t | j|| d S )N)setattrrA   )r   rG   r   r	   r	   r
   __setattr__   s    z#_ModuleWithDeprecations.__setattr__c             C   s:   t | j|}t|tr*tj|j|jdd t| j| d S )Nr0   )rD   )	r   rA   r   r<   rE   rF   r=   r>   delattr)r   rG   rH   r	   r	   r
   __delattr__   s    
z#_ModuleWithDeprecations.__delattr__c             C   s   dgt | j S )NrA   )dirrA   )r   r	   r	   r
   __dir__   s    z_ModuleWithDeprecations.__dir__N)r   r   r   r?   rI   rK   rM   rO   r	   r	   r	   r
   r@      s
   r@   c             C   s.   t j| }t|ts"t|t j|< t| ||S )N)sysmodulesr   r@   r<   )r   Zmodule_namer=   r>   rC   r	   r	   r
   
deprecated   s    

rR   c                s(   dj  t  fdd}t|S )Nz
_cached_{}c                s0   t |  }|k	r|S | }t|  | |S )N)r   rJ   )instancecacheresult)cached_namefuncsentinelr	   r
   inner   s    zcached_property.<locals>.inner)r   objectr   )rW   rY   r	   )rV   rW   rX   r
   cached_property   s    
r[   )F)N)N)!Z
__future__r   r   r   r8   r$   inspectrP   rE   UserWarningr   ZPersistentlyDeprecated2017ZPersistentlyDeprecated2019r   r   r   r   r    r7   r#   r!   r'   r/   	Exceptionr4   r5   Z
getargspecr   rZ   r<   r@   rR   r[   r	   r	   r	   r
   <module>   s8   	




	
