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Editing: fixer_util.cpython-36.pyc
3 \g; � @ s� d Z ddlmZ ddlmZmZ ddlmZ ddl m Z dd� Z dd � Z d d � Z d d � ZdWdd�Zdd� Zdd� Zdd� Ze � e � fdd�ZdXdd�Zdd � Zd d � ZdYd d �Zd!d"� ZdZd#d$�Zd[d%d&�Zd'd(� Zd)d*� Z d+d,� Z d-d.� Z d/d0� Z d1d2d3d4d5d6d7d8d9d:h Z d;d<� Z!d=a"d>a#d?a$d@a%dAdB� Z&dCdD� Z'dEdF� Z(dGdH� Z)dIdJ� Z*dKdL� Z+dMdN� Z,dOdP� Z-ej.ej/hZ0d\dQdR�Z1ej/ej.ej2hZ3dSdT� Z4d]dUdV�Z5dS )^z1Utility functions, node construction macros, etc.� )�token)�Leaf�Node)�python_symbols)�patcompc C s t tj| ttjd�|g�S )N�=)r �symsZargumentr r �EQUAL)�keyword�value� r �*/usr/lib64/python3.6/lib2to3/fixer_util.py� KeywordArg s r c C s t tjd�S )N�()r r �LPARr r r r �LParen s r c C s t tjd�S )N�))r r �RPARr r r r �RParen s r c C sH t | t�s| g} t |t�s&d|_|g}ttj| ttjddd�g | �S )z Build an assignment statement� r )�prefix) � isinstance�listr r r �atomr r r )�target�sourcer r r �Assign s r Nc C s t tj| |d�S )zReturn a NAME leaf)r )r r �NAME)�namer r r r �Name$ s r c C s | t tjt� |g�gS )zA node tuple for obj.attr)r r �trailer�Dot)�obj�attrr r r �Attr( s r$ c C s t tjd�S )z A comma leaf�,)r r �COMMAr r r r �Comma, s r' c C s t tjd�S )zA period (.) leaf�.)r r �DOTr r r r r! 0 s r! c C s4 t tj|j� |j� g�}| r0|jdt tj| �� |S )z-A parenthesised argument list, used by Call()r )r r r �clone� insert_child�arglist)�argsZlparenZrparen�noder r r �ArgList4 s r/ c C s& t tj| t|�g�}|dk r"||_|S )zA function callN)r r �powerr/ r )Z func_namer- r r. r r r �Call; s r1 c C s t tjd�S )zA newline literal� )r r �NEWLINEr r r r �NewlineB s r4 c C s t tjd�S )z A blank line� )r r r3 r r r r � BlankLineF s r6 c C s t tj| |d�S )N)r )r r �NUMBER)�nr r r r �NumberJ s r9 c C s" t tjttjd�| ttjd�g�S )z A numeric or string subscript�[�])r r r r r �LBRACE�RBRACE)Z index_noder r r � SubscriptM s r> c C s t tj| |d�S )z A string leaf)r )r r �STRING)�stringr r r r �StringS s rA c C s� d| _ d|_ d|_ ttjd�}d|_ ttjd�}d|_ ||||g}|rtd|_ ttjd�}d|_ |jttj||g�� ttj| ttj |�g�}ttj ttj d�|ttj d�g�S )zuA list comprehension of the form [xp for fp in it if test]. 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If you have a chain of objects where a.foo -> b, b.foo-> c, etc, use this to iterate over all objects in the chain. Iteration is terminated by getattr(x, attr) is None. Args: obj: the starting object attr: the name of the chaining attribute Yields: Each successive object in the chain. N)�getattr)r" r# �nextr r r � attr_chain� s rm zefor_stmt< 'for' any 'in' node=any ':' any* > | comp_for< 'for' any 'in' node=any any* > z� power< ( 'iter' | 'list' | 'tuple' | 'sorted' | 'set' | 'sum' | 'any' | 'all' | 'enumerate' | (any* trailer< '.' 'join' >) ) trailer< '(' node=any ')' > any* > z` power< ( 'sorted' | 'enumerate' ) trailer< '(' arglist<node=any any*> ')' > any* > Fc C sr t s&tjt�atjt�atjt�ada tttg}x<t|t| d��D ](\}}i }|j||�rB|d | krBdS qBW dS )a Returns true if node is in an environment where all that is required of it is being iterable (ie, it doesn't matter if it returns a list or an iterator). See test_map_nochange in test_fixers.py for some examples and tests. T�parentr. F) � pats_builtr Zcompile_pattern�p0�p1�p2�ziprm �match)r. Zpatterns�patternrn rW r r r �in_special_context� s rv c C s� | j }|dk r |jtjkr dS | j}|jtjtjfkr:dS |jtjkrX|j d | krXdS |jtj ks�|jtj kr�|dk r�|jtj ks�|j d | kr�dS dS )zG Check that something isn't an attribute or function name etc. NFrU T) Z prev_siblingrV r r) rn r �funcdef�classdef� expr_stmtrO Z parametersZ typedargslistr& )r. �prevrn r r r �is_probably_builtin� s r{ c C sN xH| dk rH| j tjkr@t| j�dkr@| jd }|j tjkr@|jS | j} qW dS )z Find the indentation of *node*.Nr\ r r5 ) rV r �suiter] rO r �INDENTr rn )r. �indentr r r �find_indentation s r c C s> | j tjkr| S | j� } | jd }| _ttj| g�}||_|S )N)rV r r| r* rn r )r. rn r| r r r � make_suite s r� c C s( x"| j tjkr"| j} | std��qW | S )z Find the top level namespace.z,root found before file_input node was found.)rV r Z file_inputrn � ValueError)r. r r r � find_root& s r� c C s t |t|�| �}t|�S )z� Returns true if name is imported from package at the top level of the tree which node belongs to. 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Zbindingr r r �does_tree_import/ s r� c C s | j tjtjfkS )z0Returns true if the node is an import statement.)rV r � import_namerN )r. r r r � is_import7 s r� c C s4 dd� }t |�}t| ||�r dS d }}xTt|j�D ]F\}}||�sFq4x(t|j|d� �D ]\}}||�sZP qZW || }P q4W |dkr�xDt|j�D ]6\}}|jtjkr�|jr�|jd jtjkr�|d }P q�W | dkr�t tj t tj d�t tj |dd�g�} nt | t tj |dd�g�} | t� g} |j|t tj| �� dS ) z\ Works like `does_tree_import` but adds an import statement if it was not imported. c S s | j tjko | jo t| jd �S )NrU )rV r � simple_stmtrO r� )r. r r r �is_import_stmt> s z$touch_import.<locals>.is_import_stmtNrU r rK r )r )r� r� rj rO rV r r� r r? r r� r r rQ r4 r+ ) r� r r. r� �rootZ insert_pos�offset�idxZnode2�import_rO r r r � touch_import; s4 r� c C s� �x�|j D �]�}d}|jtjkrVt| |j d �r4|S t| t|j d �|�}|rR|}�n4|jtjtjfkr�t| t|j d �|�}|r�|}�n |jtj k�rt| t|j d �|�}|r�|}nXx�t |j dd� �D ]@\}}|jt j ko�|j dkr�t| t|j |d �|�}|r�|}q�W nx|jtk�r6|j d j | k�r6|}nTt|| |��rJ|}n@|jtjk�rft| ||�}n$|jtjk�r�t| |j d ��r�|}|r |�s�|S t|�r |S q W dS ) z� Returns the node which binds variable name, otherwise None. 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