U
    P»{j™  ã                   @   s~   d Z ddlmZ ddlmZ ddlmZmZmZm	Z	m
Z
mZmZmZmZmZ ddlmZmZmZ dd„ ZG dd	„ d	ejƒZd
S )zD
Fixer for:
(a,)* *b (,c)* [,] = s
for (a,)* *b (,c)* [,] in d: ...
é    )Ú
fixer_base)Úcount)
ÚAssignÚCommaÚCallÚNewlineÚNameÚNumberÚtokenÚsymsÚNodeÚLeaf)ÚindentationÚsuitifyÚ	commatizec                 C   sø  g }zt | ƒ}t |ƒ}W n$ tk
r<   t| ƒ}t|ƒ}Y nX | dkr°ttjt|ƒttjtt	j
dƒttjtt	jdƒt|ƒgƒtt	jdƒgƒgƒ}| |¡ | tt	jddd�¡ ttjtt	j
ddd�t|ƒttjtt	j
dƒttj| dkrðt|ƒntdd	ƒtt	jdƒ|dk�r(ttjtt	jd
ƒt|ƒgƒntdd	ƒgƒtt	jdƒtt	jdƒgƒgƒ}| |¡ |dk�rè| tt	jddd�¡ ttjt|dd�ttjtt	j
dƒttjttjtt	jd
ƒt|ƒgƒtt	jdƒgƒtt	jdƒgƒgƒ}	| |	¡ ttj|ƒ}
|
S )z±
    Accepts num_pre and num_post, which are counts of values
    before and after the starg (not including the starg)
    Returns a source fit for Assign() from fixer_util
    r   ú[ú:ú]ú+ú ©Úprefixé   Ú ú-)ÚunicodeÚ	NameErrorÚstrr   r   Úpowerr   Útrailerr   r
   ÚLSQBZ	subscriptÚCOLONr	   ÚRSQBÚappendÚPLUSÚfactorÚMINUSZ
arith_expr)Znum_preZnum_postÚLISTNAMEÚITERNAMEÚchildrenÚpreÚpostZpre_partZ	main_partZ	post_partÚsource© r-   ú`/var/www/html/bwave/python/venv/lib/python3.8/site-packages/libpasteurize/fixes/fix_unpacking.pyÚassignment_source   s&    J
¢

b
r/   c                   @   s(   e Zd ZdZdd„ Zdd„ Zdd„ ZdS )	ÚFixUnpackinga9  
    expl=expr_stmt< testlist_star_expr<
        pre=(any ',')*
            star_expr< '*' name=NAME >
        post=(',' any)* [','] > '=' source=any > |
    impl=for_stmt< 'for' lst=exprlist<
        pre=(any ',')*
            star_expr< '*' name=NAME >
        post=(',' any)* [','] > 'in' it=any ':' suite=any>c           
         s¶   ‡ fdd„dD ƒ\}}}}dd„ |D ƒ}d|_ dd„ |D ƒ}dd„ t|| ¡ g | ƒD ƒ}| tƒ ¡ d	|_ tt| jƒttd
ƒ| ¡ gƒƒ}t|t	t
|ƒt
|ƒ| j| jƒƒ}	||	fS )Nc                 3   s   | ]}ˆ   |¡V  qd S ©N©Úget©Ú.0Ún©Úresultsr-   r.   Ú	<genexpr>7   s     z4FixUnpacking.fix_explicit_context.<locals>.<genexpr>)r*   Únamer+   r,   c                 S   s    g | ]}|j tjkr| ¡ ‘qS r-   ©Útyper
   ÚNAMEÚcloner4   r-   r-   r.   Ú
<listcomp>8   s      z5FixUnpacking.fix_explicit_context.<locals>.<listcomp>r   c                 S   s    g | ]}|j tjkr| ¡ ‘qS r-   r;   r4   r-   r-   r.   r?   :   s      c                 S   s   g | ]}|  ¡ ‘qS r-   ©r>   r4   r-   r-   r.   r?   ;   s     r   Úlist)r   r   r>   r#   r   r   r   r'   r   r/   Úlenr(   )
ÚselfÚnoder8   r*   r:   r+   r,   ÚtargetÚ
setup_lineÚ
power_liner-   r7   r.   Úfix_explicit_context6   s       z!FixUnpacking.fix_explicit_contextc                    sÀ   ‡ fdd„dD ƒ\}}}}dd„ |D ƒ}d|_ dd„ |D ƒ}dd„ t|| ¡ g | ƒD ƒ}| tƒ ¡ | ¡ }d	|_ tt| jƒttd
ƒt| j	ƒgƒƒ}	t|t
t|ƒt|ƒ| j| j	ƒƒ}
|	|
fS )z_
        Only example of the implicit context is
        a for loop, so only fix that.
        c                 3   s   | ]}ˆ   |¡V  qd S r1   r2   r4   r7   r-   r.   r9   I   s     z4FixUnpacking.fix_implicit_context.<locals>.<genexpr>)r*   r:   r+   Úitc                 S   s    g | ]}|j tjkr| ¡ ‘qS r-   r;   r4   r-   r-   r.   r?   J   s      z5FixUnpacking.fix_implicit_context.<locals>.<listcomp>r   c                 S   s    g | ]}|j tjkr| ¡ ‘qS r-   r;   r4   r-   r-   r.   r?   L   s      c                 S   s   g | ]}|  ¡ ‘qS r-   r@   r4   r-   r-   r.   r?   M   s     r   rA   )r   r   r>   r#   r   r   r   r'   r   r(   r/   rB   )rC   rD   r8   r*   r:   r+   rI   rE   r,   rF   rG   r-   r7   r.   Úfix_implicit_contextD   s     " z!FixUnpacking.fix_implicit_contextc           
      C   s@  |   d¡| _|   d¡| _| d¡| d¡ }}|dk	rŽ|  ||¡\}}|j|_t|jƒ|_| t	ƒ ¡ |j}| 
¡ }| ||¡ | ||¡ n®|dk	�r<|  ||¡\}}t|ƒ dd„ |jD ƒd }	d	|_|	jd
 j|_t|	jd ƒ|	jd _|	 dt	ƒ ¡ |	 d|¡ |	 dt	ƒ ¡ |	 d|¡ | d¡ t| jdd�¡ dS )a­  
        a,b,c,d,e,f,*g,h,i = range(100) changes to
        _3to2list = list(range(100))
        a,b,c,d,e,f,g,h,i, = _3to2list[:6] + [_3to2list[6:-2]] + _3to2list[-2:]

        and

        for a,b,*c,d,e in iter_of_iters: do_stuff changes to
        for _3to2iter in iter_of_iters:
            _3to2list = list(_3to2iter)
            a,b,c,d,e, = _3to2list[:2] + [_3to2list[2:-2]] + _3to2list[-2:]
            do_stuff
        Z	_3to2listZ	_3to2iterÚexplÚimplNc                 S   s   g | ]}|j tjkr|‘qS r-   )r<   r   Úsuite)r5   Úkr-   r-   r.   r?   t   s      z*FixUnpacking.transform.<locals>.<listcomp>r   r   r   é   Úlstr   r   )Únew_namer'   r(   r3   rH   r   r   ÚparentZappend_childr   ÚremoveZinsert_childrJ   r   r)   ÚvalueÚreplacer   )
rC   rD   r8   rK   rL   rF   rG   rR   ÚirM   r-   r-   r.   Ú	transformW   s0    
zFixUnpacking.transformN)Ú__name__Ú
__module__Ú__qualname__ZPATTERNrH   rJ   rW   r-   r-   r-   r.   r0   *   s   
r0   N)Ú__doc__Zlib2to3r   Ú	itertoolsr   Zlib2to3.fixer_utilr   r   r   r   r   r	   r
   r   r   r   Zlibfuturize.fixer_utilr   r   r   r/   ZBaseFixr0   r-   r-   r-   r.   Ú<module>   s   0