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    @[                 @   s   d dl Z d dlZyd dlmZmZ W nJ ek
rn   dZyd dlmZ W n  ek
rh   d dlmZ Y nX Y nX dd Zdd Z	d	d
 Z
dd Zdd Zdd Zdd Zdd Zdd Zdd Zdd Zedkrdd Zndd Zdd ZdS )     N)	Parameter	signature)getfullargspec)
getargspecc             C   s   | d S )z Add one to the current value     )xr   r   N/opt/alt/python37/lib64/python3.7/site-packages/pyrsistent/_transformations.pyinc   s    r
   c             C   s   | d S )z% Subtract one from the current value r   r   )r   r   r   r	   dec   s    r   c             C   s$   y
| |= W n t k
r   Y nX dS )zL Discard the element and returns a structure without the discarded elements N)KeyError)evolverkeyr   r   r	   discard   s    
r   c                s   t |   fddS )zE Regular expression matcher to use together with transform functions c                s   t | tjo | S )N)
isinstancesixstring_typesmatch)r   )rr   r	   <lambda>#       zrex.<locals>.<lambda>)recompile)exprr   )r   r	   rex    s    
r   c             C   s   dS )z  Matcher that matches any value Tr   )_r   r   r	   ny&   s    r   c             c   s0   x*t dt| |D ]}| |||  V  qW d S )Nr   )rangelen)lnir   r   r	   _chunks+   s    r"   c             C   s,   | }x"t |dD ]\}}t|||}qW |S )N   )r"   _do_to_path)	structureZtransformationsr   pathcommandr   r   r	   	transform0   s    r(   c             C   s<   |st |r|| S |S t| |d }t| ||dd  |S )Nr   r   )callable_get_keys_and_values_update_structure)r%   r&   r'   kvsr   r   r	   r$   7   s    r$   c             C   s*   y|   S  tk
r$   tt| S X d S )N)itemsAttributeErrorlist	enumerate)r%   r   r   r	   _items?   s    r1   c          	   C   s:   yt | dr| | S t| |S  ttfk
r4   |S X d S )N__getitem__)hasattrgetattr
IndexErrorr   )r%   r   defaultr   r   r	   _getG   s    

r7   c                st   ddl m} t r`t }|dkr: fddt| D S |dkrX fddt| D S td t|  | fgS )	Nr   )pmapr   c                s    g | ]\}} |r||fqS r   r   ).0kv)key_specr   r	   
<listcomp>Z   s    z(_get_keys_and_values.<locals>.<listcomp>r#   c                s"   g | ]\}} ||r||fqS r   r   )r9   r:   r;   )r<   r   r	   r=   ^   s    z5callable in transform path must take 1 or 2 arguments)Zpyrsistent._pmapr8   r)   
_get_arityr1   
ValueErrorr7   )r%   r<   r8   arityr   )r<   r	   r*   R   s    r*   c             C   s    t | }t|jt|jpd S )Nr   )r   r   argsdefaults)fZargspecr   r   r	   r>   j   s    r>   c             C   s   t dd t| j D S )Nc             s   s0   | ](}|j tjkr|jtjtjfkrd V  qdS )r   N)r6   r   emptykindPOSITIONAL_ONLYPOSITIONAL_OR_KEYWORD)r9   pr   r   r	   	<genexpr>p   s   z_get_arity.<locals>.<genexpr>)sumr   
parametersvalues)rC   r   r   r	   r>   n   s    c             C   sl   |   }|s6|tkr6xNt|D ]\}}t|| qW n.x,|D ]$\}}t|||}||k	r<|||< q<W | S )N)r   r   reversedr$   Z
persistent)r%   r,   r&   r'   er:   r;   resultr   r   r	   r+   w   s    r+   )r   r   inspectr   r   ImportErrorr   r   r
   r   r   r   r   r"   r(   r$   r1   r7   r*   r>   r+   r   r   r   r	   <module>   s0   	
	