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B
    ìÅ@[ÿ  ã               @   sî   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rÚdd„ Zndd„ Zdd„ ZdS ) é    N)Ú	ParameterÚ	signature)Úgetfullargspec)Ú
getargspecc             C   s   | d S )z Add one to the current value é   © )Úxr   r   úN/opt/alt/python37/lib64/python3.7/site-packages/pyrsistent/_transformations.pyÚinc   s    r
   c             C   s   | d S )z% Subtract one from the current value r   r   )r   r   r   r	   Údec   s    r   c             C   s$   y
| |= W n t k
r   Y nX dS )zL Discard the element and returns a structure without the discarded elements N)ÚKeyError)ÚevolverÚkeyr   r   r	   Údiscard   s    
r   c                s   t  | ¡‰ ‡ fdd„S )zE Regular expression matcher to use together with transform functions c                s   t | tjƒoˆ  | ¡S )N)Ú
isinstanceÚsixÚstring_typesÚmatch)r   )Úrr   r	   Ú<lambda>#   ó    zrex.<locals>.<lambda>)ÚreÚcompile)Úexprr   )r   r	   Úrex    s    
r   c             C   s   dS )z  Matcher that matches any value Tr   )Ú_r   r   r	   Úny&   s    r   c             c   s0   x*t dt| ƒ|ƒD ]}| ||| … V  qW d S )Nr   )ÚrangeÚlen)ÚlÚnÚir   r   r	   Ú_chunks+   s    r"   c             C   s,   | }x"t |dƒD ]\}}t|||ƒ}qW |S )Né   )r"   Ú_do_to_path)Ú	structureZtransformationsr   ÚpathÚcommandr   r   r	   Ú	transform0   s    r(   c             C   s<   |st |ƒr|| ƒS |S t| |d ƒ}t| ||dd … |ƒS )Nr   r   )ÚcallableÚ_get_keys_and_valuesÚ_update_structure)r%   r&   r'   Úkvsr   r   r	   r$   7   s    r$   c             C   s*   y|   ¡ S  tk
r$   tt| ƒƒS X d S )N)ÚitemsÚAttributeErrorÚlistÚ	enumerate)r%   r   r   r	   Ú_items?   s    r1   c          	   C   s:   yt | dƒr| | S t| |ƒS  ttfk
r4   |S X d S )NÚ__getitem__)ÚhasattrÚgetattrÚ
IndexErrorr   )r%   r   Údefaultr   r   r	   Ú_getG   s    

r7   c                st   ddl m} tˆ ƒr`tˆ ƒ}|dkr:‡ fdd„t| ƒD ƒS |dkrX‡ fdd„t| ƒD ƒS tdƒ‚ˆ t| ˆ |ƒ ƒfgS )	Nr   )Úpmapr   c                s    g | ]\}}ˆ |ƒr||f‘qS r   r   )Ú.0ÚkÚv)Úkey_specr   r	   ú
<listcomp>Z   s    z(_get_keys_and_values.<locals>.<listcomp>r#   c                s"   g | ]\}}ˆ ||ƒ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)   Ú
_get_arityr1   Ú
ValueErrorr7   )r%   r<   r8   Úarityr   )r<   r	   r*   R   s    r*   c             C   s    t | ƒ}t|jƒt|jpdƒ S )Nr   )r   r   ÚargsÚdefaults)ÚfZargspecr   r   r	   r>   j   s    r>   c             C   s   t dd„ t| ƒj ¡ D ƒƒ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   ÚemptyÚkindÚPOSITIONAL_ONLYÚPOSITIONAL_OR_KEYWORD)r9   Úpr   r   r	   ú	<genexpr>p   s   z_get_arity.<locals>.<genexpr>)Úsumr   Ú
parametersÚvalues)rC   r   r   r	   r>   n   s    c             C   sl   |   ¡ }|s6|tkr6xNt|ƒD ]\}}t||ƒ qW n.x,|D ]$\}}t|||ƒ}||k	r<|||< q<W | ¡ S )N)r   r   Úreversedr$   Z
persistent)r%   r,   r&   r'   Úer:   r;   Úresultr   r   r	   r+   w   s    r+   )r   r   Úinspectr   r   ÚImportErrorr   r   r
   r   r   r   r   r"   r(   r$   r1   r7   r*   r>   r+   r   r   r   r	   Ú<module>   s0   	
	