B
     S]                 @   sN   d Z ddlmZ ddlmZmZmZmZmZm	Z	 dZ
dZG dd dejZdS )	a  Adjust some old Python 2 idioms to their modern counterparts.

* Change some type comparisons to isinstance() calls:
    type(x) == T -> isinstance(x, T)
    type(x) is T -> isinstance(x, T)
    type(x) != T -> not isinstance(x, T)
    type(x) is not T -> not isinstance(x, T)

* Change "while 1:" into "while True:".

* Change both

    v = list(EXPR)
    v.sort()
    foo(v)

and the more general

    v = EXPR
    v.sort()
    foo(v)

into

    v = sorted(EXPR)
    foo(v)
   )
fixer_base)CallCommaNameNode	BlankLinesymsz0(n='!=' | '==' | 'is' | n=comp_op< 'is' 'not' >)z(power< 'type' trailer< '(' x=any ')' > >c                   sP   e Zd ZdZdeeeef Z fddZdd Zdd Z	d	d
 Z
dd Z  ZS )	FixIdiomsTa  
        isinstance=comparison< %s %s T=any >
        |
        isinstance=comparison< T=any %s %s >
        |
        while_stmt< 'while' while='1' ':' any+ >
        |
        sorted=any<
            any*
            simple_stmt<
              expr_stmt< id1=any '='
                         power< list='list' trailer< '(' (not arglist<any+>) any ')' > >
              >
              '\n'
            >
            sort=
            simple_stmt<
              power< id2=any
                     trailer< '.' 'sort' > trailer< '(' ')' >
              >
              '\n'
            >
            next=any*
        >
        |
        sorted=any<
            any*
            simple_stmt< expr_stmt< id1=any '=' expr=any > '\n' >
            sort=
            simple_stmt<
              power< id2=any
                     trailer< '.' 'sort' > trailer< '(' ')' >
              >
              '\n'
            >
            next=any*
        >
    c                s8   t t| |}|r4d|kr4|d |d kr0|S d S |S )NsortedZid1Zid2)superr	   match)selfnoder)	__class__ )lib/python3.7/lib2to3/fixes/fix_idioms.pyr   O   s    zFixIdioms.matchc             C   sH   d|kr|  ||S d|kr(| ||S d|kr<| ||S tdd S )N
isinstancewhiler
   zInvalid match)transform_isinstancetransform_whiletransform_sortRuntimeError)r   r   resultsr   r   r   	transformZ   s    zFixIdioms.transformc             C   sh   |d   }|d   }d|_d|_ttd|t |g}d|kr\d|_ttjtd|g}|j|_|S )NxT  r   nnot)cloneprefixr   r   r   r   r   Znot_test)r   r   r   r   r   Ztestr   r   r   r   d   s    zFixIdioms.transform_isinstancec             C   s    |d }| td|jd d S )Nr   True)r"   )replacer   r"   )r   r   r   Zoner   r   r   r   p   s    zFixIdioms.transform_whilec             C   s  |d }|d }| d}| d}|r>|td|jd n8|rn| }d|_|ttd|g|jd ntd|  |j}d	|kr|r|d	d
 |d
 jf}	d		|	|d
 _nH|j
st|jd kstt }
|j
|
 |j|
kst|d	d
 |
_d S )Nsortnextlistexprr
   )r"   r   zshould not have reached here
    )getr$   r   r"   r!   r   r   remove
rpartitionjoinparentAssertionErrorZnext_siblingr   Zappend_child)r   r   r   Z	sort_stmtZ	next_stmtZ	list_callZsimple_exprnewZbtwnZprefix_linesZend_liner   r   r   r   t   s0    



zFixIdioms.transform_sort)__name__
__module____qualname__ZexplicitTYPECMPZPATTERNr   r   r   r   r   __classcell__r   r   )r   r   r	   %   s   '
r	   N)__doc__r   r   Z
fixer_utilr   r   r   r   r   r   r6   r5   ZBaseFixr	   r   r   r   r   <module>   s
    