Edit File: refactor.cpython-37.pyc
B q}�ck � @ s d Z dZddlZddlZddlZddlZddlZddlZddlZddl m Z ddl m Z m Z mZ ddlmZ ddlmZmZ dd lmZ d!d d �ZG d d� de�Zdd� Zdd� Zdd� Zdd� Z dd� Z G dd� de�Z G dd � d e �Z G d d � d e�Z!G d d � d e �Z"dS )"z�Refactoring framework. Used as a main program, this can refactor any number of files and/or recursively descend down directories. Imported as a module, this provides infrastructure to write your own refactoring tool. z#Guido van Rossum <guido@python.org>� N)�chain� )�driver�tokenize�token)� find_root)�pytree�pygram)� btm_matcherTc C sX t | g g dg�}g }x>t�|j�D ].\}}}|�d�r"|rF|dd� }|�|� q"W |S )zEReturn a sorted list of all available fix names in the given package.�*�fix_� N)� __import__�pkgutilZ iter_modules�__path__� startswith�append)Z fixer_pkgZ remove_prefixZpkgZ fix_names�finder�nameZispkg� r �5/opt/alt/python37/lib64/python3.7/lib2to3/refactor.py�get_all_fix_names s r c @ s e Zd ZdS )� _EveryNodeN)�__name__� __module__� __qualname__r r r r r + s r c C s� t | tjtjf�r(| jdkr t�| jhS t | tj�rH| jrDt| j�S t�t | tj �r�t � }x*| jD ] }x|D ]}|� t|�� qlW qbW |S t d| ��dS )zf Accepts a pytree Pattern Node and returns a set of the pattern types which will match first. Nz$Oh no! 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N)� collections� defaultdict�list�patternr r r Z _accept_typer r �python_grammarZ symbol2number�values�tokens�extend�dict)Z fixer_listZ head_nodesZevery�fixerZheadsZ node_typer r r �_get_headnode_dictK s" r/ c s � fdd�t � d�D �S )zN Return the fully qualified names for fixers in the package pkg_name. c s g | ]}� d | �qS )�.r )�.0�fix_name)�pkg_namer r � <listcomp>h s z+get_fixers_from_package.<locals>.<listcomp>F)r )r3 r )r3 r �get_fixers_from_packaged s r5 c C s | S )Nr )�objr r r � _identityk s r7 c sV d}t �t�| �j�� � fdd�}ttjt jtj h�}t � }y�x�|� \}}||krVq@q@|tj krl|rfP d}q@|tj k�r.|dk�r.|� \}}|tj ks�|dkr�P |� \}}|tj ks�|dkr�P |� \}}|tj kr�|dkr�|� \}}xJ|tj k�r*|�|� |� \}}|tj k�s |d k�r P |� \}}q�W q@P q@W W n tk �rL Y nX t|�S ) NFc s t � �} | d | d fS )Nr r )�next)�tok)�genr r �advancer s z(_detect_future_features.<locals>.advanceT�fromZ __future__�import�(�,)r �generate_tokens�io�StringIO�readline� frozensetr �NEWLINE�NL�COMMENTr �STRING�NAME�OP�add� StopIteration)�sourceZhave_docstringr; �ignore�features�tp�valuer )r: r �_detect_future_featureso sD rR c @ s e Zd ZdZdS )� FixerErrorz A fixer could not be loaded.N)r r r �__doc__r r r r rS � s rS c @ s� e Zd Zddd�ZdZdZd4dd�Zdd � Zd d � Zd d � Z dd� Z dd� Z d5dd�Z d6dd�Z dd� Zd7dd�Zdd� Zd8d d �Zd d � Zd d!� Zd9d"d#�Zd:d$d%�Zd&Zd'Zd(d)� Zd*d+� Zd,d-� Zd.d/� Zd0d1� Z d2d3� Z dS );�RefactoringToolF)�print_function�write_unchanged_filesZFixr Nc C s2 || _ |p g | _| j�� | _|dk r0| j�|� | jd rDtj| _ntj | _| j� d�| _ g | _ t �d�| _g | _d| _tj| jtj| jd�| _| �� \| _| _g | _t�� | _ g | _ g | _ xXt | j| j�D ]F}|j r�| j �!|� q�|| jkr�| j �"|� q�|| jkr�| j �"|� q�W t#| j �| _$t#| j �| _%dS )z�Initializer. Args: fixer_names: a list of fixers to import options: a dict with configuration. explicit: a list of fixers to run even if they are explicit. NrV rW rU F)�convert�logger)&�fixers�explicit�_default_options�copy�optionsr r �!python_grammar_no_print_statement�grammarr) �getrW �errors�loggingZ getLoggerrY � fixer_log�wroter ZDriverr rX � get_fixers� pre_order� post_order�files�bmZ BottomMatcher�BMZ bmi_pre_orderZbmi_post_orderr Z BM_compatibleZ add_fixerr r/ �bmi_pre_order_heads�bmi_post_order_heads)�selfZ fixer_namesr^ r[ r. r r r �__init__� s< zRefactoringTool.__init__c C s^ g }g }�x(| j D �] }t|i i dg�}|�dd�d }|�| j�rV|t| j�d� }|�d�}| jd�dd � |D �� }yt ||�}W n& t k r� t d ||f �d�Y nX || j | j �} | jr�| jd k r�|| jkr�| �d |� q| �d |� | jdk�r |�| � q| jdk�r"|�| � qt d| j ��qW t�d�} |j| d� |j| d� ||fS )a Inspects the options to load the requested patterns and handlers. Returns: (pre_order, post_order), where pre_order is the list of fixers that want a pre-order AST traversal, and post_order is the list that want post-order traversal. r r0 r ���N�_� c S s g | ] }|� � �qS r )�title)r1 r# r r r r4 � s z.RefactoringTool.get_fixers.<locals>.<listcomp>zCan't find %s.%sTzSkipping optional fixer: %szAdding transformation: %sZpreZpostzIllegal fixer order: %rZ run_order)�key)rZ r �rsplitr � FILE_PREFIX�len�split� CLASS_PREFIX�join�getattr�AttributeErrorrS r^ rd r[ � log_message� log_debug�orderr �operator� attrgetter�sort) rn Zpre_order_fixersZpost_order_fixersZ fix_mod_path�modr2 �parts� class_nameZ fix_classr. Zkey_funcr r r rf � s8 zRefactoringTool.get_fixersc O s � dS )z Called when an error occurs.Nr )rn �msg�args�kwdsr r r � log_error� s zRefactoringTool.log_errorc G s |r || }| j �|� dS )zHook to log a message.N)rY �info)rn r� r� r r r r} s zRefactoringTool.log_messagec G s |r || }| j �|� d S )N)rY �debug)rn r� r� r r r r~ s zRefactoringTool.log_debugc C s dS )zTCalled with the old version, new version, and filename of a refactored file.Nr )rn �old_text�new_text�filename�equalr r r � print_output s z RefactoringTool.print_outputc C s< x6|D ].}t j�|�r&| �|||� q| �|||� qW dS )z)Refactor a list of files and directories.N)�os�path�isdir� refactor_dir� refactor_file)rn �items�write� doctests_onlyZ dir_or_filer r r �refactor s zRefactoringTool.refactorc C s� t jd }x�t �|�D ]�\}}}| �d|� |�� |�� xF|D ]>}|�d�sBt j�|�d |krBt j�||�} | � | ||� qBW dd� |D �|dd�< qW dS )z�Descends down a directory and refactor every Python file found. Python files are assumed to have a .py extension. Files and subdirectories starting with '.' are skipped. �pyzDescending into %sr0 r c S s g | ]}|� d �s|�qS )r0 )r )r1 Zdnr r r r4 . s z0RefactoringTool.refactor_dir.<locals>.<listcomp>N) r� �extsep�walkr~ r� r r� �splitextrz r� ) rn Zdir_namer� r� Zpy_ext�dirpathZdirnames� filenamesr �fullnamer r r r� s z RefactoringTool.refactor_dirc C s� yt |d�}W n0 tk r> } z| �d||� dS d}~X Y nX zt�|j�d }W d|�� X tj |d|dd��}|�� |fS Q R X dS ) zG Do our best to decode a Python source file correctly. �rbzCan't open %s: %s)NNNr r" rr )�encoding�newline) �open�OSErrorr� r �detect_encodingrC �closerA �read)rn r� �f�errr� r r r �_read_python_source0 s z#RefactoringTool._read_python_sourcec C s� | � |�\}}|dkrdS |d7 }|rn| �d|� | �||�}| jsL||kr`| �|||||� q�| �d|� nH| �||�}| js�|r�|jr�| jt|�dd� |||d� n | �d|� dS )zRefactors a file.N� zRefactoring doctests in %szNo doctest changes in %srp )r� r� zNo changes in %s)r� r~ �refactor_docstringrW �processed_file�refactor_string� was_changed�str)rn r� r� r� �inputr� �output�treer r r r� @ s z RefactoringTool.refactor_filec C s� t |�}d|krtj| j_zLy| j�|�}W n6 tk rb } z| �d||jj |� dS d}~X Y nX W d| j| j_X ||_ | � d|� | � ||� |S )aF Refactor a given input string. Args: data: a string holding the code to be refactored. name: a human-readable name for use in error/log messages. Returns: An AST corresponding to the refactored input stream; None if there were errors during the parse. rV zCan't parse %s: %s: %sNzRefactoring %s) rR r r_ r r` Z parse_stringr! r� � __class__r �future_featuresr~ � refactor_tree)rn �datar rO r� r� r r r r� W s z RefactoringTool.refactor_stringc C s� t j�� }|rN| �d� | �|d�}| js2||krB| �|d|� q�| �d� n:| �|d�}| jsj|r~|jr~| �t |�d|� n | �d� d S )Nz Refactoring doctests in stdinz<stdin>zNo doctest changes in stdinzNo changes in stdin) �sys�stdinr� r~ r� rW r� r� r� r� )rn r� r� r� r� r r r �refactor_stdinr s z RefactoringTool.refactor_stdinc C s� x"t | j| j�D ]}|�||� qW | �| j|�� � | �| j|�� � | j�|� � �}�xtt |� � ��rΐx^| jj D �]P}||krv|| rv|| j tjjdd� |jr�|| j tjjd� �xt|| �D ]�}||| kr�|| �|� y t|� W n tk �r w�Y nX |j�r&||jk�r&q�|�|�}|r�|�||�}|dk r�|�|� x,|�� D ] }|j�sng |_|j�|� �q\W | j�|� � �}x2|D ]*} | |k�r�g || < || � || � �q�W q�W qvW q\W x$t | j| j�D ]}|� ||� �q�W |j S )a� Refactors a parse tree (modifying the tree in place). For compatible patterns the bottom matcher module is used. Otherwise the tree is traversed node-to-node for matches. Args: tree: a pytree.Node instance representing the root of the tree to be refactored. name: a human-readable name for this tree. Returns: True if the tree was modified, False otherwise. T)rt �reverse)rt N) r rg rh Z start_tree� traverse_byrl rm rk �runZleaves�anyr* rZ r� r ZBaseZdepthZkeep_line_orderZ get_linenor' �remover � ValueErrorZfixers_applied�match� transform�replacer r, Z finish_treer� ) rn r� r r. Z match_set�node�results�newZ new_matchesZfxrr r r r� � sJ $z RefactoringTool.refactor_treec C s^ |sdS xP|D ]H}xB||j D ]4}|�|�}|r |�||�}|dk r |�|� |}q W qW dS )a Traverse an AST, applying a set of fixers to each node. This is a helper method for refactor_tree(). Args: fixers: a list of fixer instances. traversal: a generator that yields AST nodes. Returns: None N)r r� r� r� )rn rZ Z traversalr� r. r� r� r r r r� � s zRefactoringTool.traverse_byc C s� | j �|� |dkr.| �|�d }|dkr.dS ||k}| �||||� |r`| �d|� | js`dS |rv| �||||� n | �d|� dS )zR Called when a file has been refactored and there may be changes. Nr zNo changes to %szNot writing changes to %s)ri r r� r� r~ rW � write_file)rn r� r� r� r� r� r� r r r r� � s z RefactoringTool.processed_filec C s� yt j|d|dd�}W n0 tk rF } z| �d||� dS d}~X Y nX |�F y|�|� W n0 tk r� } z| �d||� W dd}~X Y nX W dQ R X | �d|� d| _dS ) z�Writes a string to a file. It first shows a unified diff between the old text and the new text, and then rewrites the file; the latter is only done if the write option is set. �wrr )r� r� zCan't create %s: %sNzCan't write %s: %szWrote changes to %sT)rA r� r� r� r� r~ re )rn r� r� r� r� �fpr� r r r r� � s * zRefactoringTool.write_filez>>> z... c C s g }d}d}d}d}x�|j dd�D ]�}|d7 }|�� �| j�r�|dk r\|�| �||||�� |}|g}|�| j�} |d| � }q"|dk r�|�|| j �s�||| j�� d kr�|� |� q"|dk r�|�| �||||�� d}d}|� |� q"W |dk �r|�| �||||�� d� |�S )a� Refactors a docstring, looking for doctests. This returns a modified version of the input string. It looks for doctests, which start with a ">>>" prompt, and may be continued with "..." prompts, as long as the "..." is indented the same as the ">>>". (Unfortunately we can't use the doctest module's parser, since, like most parsers, it is not geared towards preserving the original source.) Nr T)�keependsr r� rr ) � splitlines�lstripr �PS1r, �refactor_doctest�find�PS2�rstripr rz ) rn r� r� �result�blockZ block_lineno�indent�lineno�line�ir r r r� s: z"RefactoringTool.refactor_docstringc s* y�� ||� �}W nf tk rx } zH�j�tj�rRx |D ]}��d|�d�� q8W ��d|||j j |� |S d}~X Y nX �� ||��r&t |�j dd�}|d|d � ||d d� } }| dg|d ks�t| ��|d �d�s�|d d7 < � �j |�d � g}|�r&|� �fd d �|D �7 }|S ) z�Refactors one doctest. A doctest is given as a block of lines, the first of which starts with ">>>" (possibly indented), while the remaining lines start with "..." (identically indented). z Source: %sr� z+Can't parse docstring in %s line %s: %s: %sNT)r� r rp r c s g | ]}� �j | �qS r )r� )r1 r� )r� rn r r r4 Z s z4RefactoringTool.refactor_doctest.<locals>.<listcomp>)� parse_blockr! rY Z isEnabledForrc �DEBUGr~ r� r� r� r r� r� r� �AssertionError�endswithr� �pop) rn r� r� r� r� r� r� r� r� Zclippedr )r� rn r r� @ s& "z RefactoringTool.refactor_doctestc C s� | j r d}nd}| js$| �d|� n&| �d|� x| jD ]}| �|� q8W | jrt| �d� x| jD ]}| �|� qbW | jr�t| j�dkr�| �d� n| �dt| j�� x&| jD ] \}}}| j|f|�|� q�W d S ) N�werez need to bezNo files %s modified.zFiles that %s modified:z$Warnings/messages while refactoring:r zThere was 1 error:zThere were %d errors:)re ri r} rd rb rw )rn r� �file�messager� r� r� r r r � summarize] s$ zRefactoringTool.summarizec C s" | j �| �|||��}t� |_|S )z�Parses a block into a tree. This is necessary to get correct line number / offset information in the parser diagnostics and embedded into the parse tree. )r Z parse_tokens� wrap_toksrD r� )rn r� r� r� r� r r r r� t s zRefactoringTool.parse_blockc c sh t �| �||�j�}xN|D ]F\}}\}}\} } } ||d 7 }| |d 7 } ||||f| | f| fV qW dS )z;Wraps a tokenize stream to systematically modify start/end.r N)r r@ � gen_lines�__next__) rn r� r� r� r+ r rQ Zline0Zcol0Zline1Zcol1Z line_textr r r r� ~ s zRefactoringTool.wrap_toksc c s� || j }|| j }|}xV|D ]N}|�|�r@|t|�d� V n(||�� d krXdV ntd||f ��|}q W x dV qrW dS )z�Generates lines as expected by tokenize from a list of lines. This strips the first len(indent + self.PS1) characters off each line. Nr� zline=%r, prefix=%rrr )r� r� r rw r� r� )rn r� r� �prefix1Zprefix2�prefixr� r r r r� � s zRefactoringTool.gen_lines)NN)FF)FF)FF)F)NFN)N) r r r r\ ry rv ro rf r� r} r~ r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r r r r rU � s: 4( O + rU c @ s e Zd ZdS )�MultiprocessingUnsupportedN)r r r r r r r r� � s r� c sB e Zd Z� fdd�Zd � fdd� Z� fdd�Z� fd d �Z� ZS ) �MultiprocessRefactoringToolc s" t t| �j||� d | _d | _d S )N)�superr� ro �queue� output_lock)rn r� �kwargs)r� r r ro � s z$MultiprocessRefactoringTool.__init__Fr c s |dkr t t���|||�S y dd l� W n tk r@ t�Y nX �jd k rTtd��� �� �_� � � �_ � �fdd�t |�D �}z.x|D ] }|� � q�W t t���|||� W d �j� � x t |�D ]}�j�d � q�W x |D ]}|�� r�|� � q�W d �_X d S )Nr r z already doing multiple processesc s g | ]}� j �jd ��qS ))�target)ZProcess�_child)r1 r� )�multiprocessingrn r r r4 � s z8MultiprocessRefactoringTool.refactor.<locals>.<listcomp>)r� r� r� r� � ImportErrorr� r� � RuntimeErrorZ JoinableQueueZLockr� �range�startrz �putZis_alive)rn r� r� r� Z num_processesZ processesr# r� )r� )r� rn r r� � s2 z$MultiprocessRefactoringTool.refactorc sR | j �� }xB|d k rL|\}}ztt| �j||� W d | j �� X | j �� }q W d S )N)r� ra r� r� r� Z task_done)rn Ztaskr� r� )r� r r r� � s z"MultiprocessRefactoringTool._childc s2 | j d k r | j �||f� ntt| �j||�S d S )N)r� r� r� r� r� )rn r� r� )r� r r r� � s z)MultiprocessRefactoringTool.refactor_file)FFr )r r r ro r� r� r� � __classcell__r r )r� r r� � s r� )T)#rT � __author__rA r� r r� rc r� r% � itertoolsr Zpgen2r r r Z fixer_utilr rr r r r rj r r! r r r/ r5 r7 rR rS �objectrU r� r� r r r r �<module> s8 (