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a c�hsk � @ 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 sT t | g g dg�}g }t�|j�D ].\}}}|�d�r |rD|dd� }|�|� q |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 �1/opt/imh-python/lib/python3.9/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(| jdu r t�| jhS t | tj�rH| jrDt| j�S t�t | tj �r�t � }| jD ] }|D ]}|� t|�� qhq`|S t d| ��dS )zf Accepts a pytree Pattern Node and returns a set of the pattern types which will match first. Nz$Oh no! I don't understand pattern %s) � isinstancer Z NodePatternZ LeafPattern�typer ZNegatedPatternZcontent�_get_head_typesZWildcardPattern�set�update� Exception)�pat�r�p�xr r r r / s r c C s� t �t�}g }| D ]v}|jrbzt|j�}W n tyF |�|� Y q�0 |D ]}|| �|� qLq|jdur~||j �|� q|�|� qtt j j � � t j j �D ]}|| �|� q�t|�S )z^ Accepts a list of fixers and returns a dictionary of head node type --> fixer list. N)� collections� defaultdict�list�patternr r r Z _accept_typer r �python_grammarZ symbol2number�values�tokens�extend�dict)Z fixer_listZ head_nodesZevery�fixerZheadsZ node_typer r r �_get_headnode_dictK s$ �r1 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�Zpkg_namer r � <listcomp>h s �z+get_fixers_from_package.<locals>.<listcomp>F)r r6 r r6 r �get_fixers_from_packaged s �r8 c C s | S �Nr )�objr r r � _identityk s r; c sV d}t �t�| �j�� � fdd�}ttjt jtj h�}t � }z�|� \}}||v rTq>q>|tj krl|rf�q6d}q>|tj k�r6|dk�r6|� \}}|tj ks�|dkr��q6|� \}}|tj ks�|dkrq6|� \}}|tj kr�|dkr�|� \}}|tj k�r4|�|� |� \}}|tj k�s.|d k�r"�q4|� \}}q�q>�q6q>W n t�yL Y n0 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 sB rW c @ s e Zd ZdZdS )� FixerErrorz A fixer could not be loaded.N)r r r �__doc__r r r r rX � s rX c @ s� e Zd Zdddd�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$d%�Zd&Zd'Zd(d)� Zd*d+� Zd,d-� Zd.d/� Zd0d1� Z d2d3� Z dS );�RefactoringToolF)�print_function� exec_function�write_unchanged_filesZFixr Nc C sJ || _ |p g | _| j�� | _|dur0| j�|� tj�� | _| jd rR| jj d= n| jd rf| jj d= | j� d�| _ g | _ t �d�| _g | _d| _tj| jtj| jd �| _| �� \| _| _g | _t�� | _ g | _ g | _ t | j| j�D ]H}|j r�| j �!|� q�|| jv �r| j �"|� q�|| jv r�| j �"|� q�t#| j �| _$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. Nr[ �printr\ �execr] rZ F)�convert�logger)&�fixers�explicit�_default_options�copy�optionsr! r r+ �grammar�keywords�getr] �errors�logging� getLoggerra � fixer_log�wroter ZDriverr r` � get_fixers� pre_order� post_order�files�bmZ BottomMatcher�BMZ bmi_pre_orderZbmi_post_orderr Z BM_compatibleZ add_fixerr r1 �bmi_pre_order_heads�bmi_post_order_heads)�selfZ fixer_namesrf rc r0 r r r �__init__� sB � zRefactoringTool.__init__c C sV g }g }| j D �]}t|i i dg�}|�dd�d }|�| j�rR|t| j�d� }|�d�}| jd�dd � |D �� }zt ||�}W n$ t y� t d ||f �d�Y n0 || j | j �} | jr�| jd ur�|| jvr�| �d |� q| �d |� | jdk�r|�| � q| jdk�r |�| � qt d| j ��qt�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 r3 r ���N�_� c S s g | ] }|� � �qS r )�title)r4 r% r r r r7 � � z.RefactoringTool.get_fixers.<locals>.<listcomp>zCan't find %s.%sTzSkipping optional fixer: %szAdding transformation: %s�preZpostzIllegal fixer order: %rZ run_order��key)rb r �rsplitr � FILE_PREFIX�len�split� CLASS_PREFIX�join�getattr�AttributeErrorrX rf rm rc � log_message� log_debug�orderr �operator� attrgetter�sort) rw Zpre_order_fixersZpost_order_fixersZ fix_mod_path�modr5 �parts� class_nameZ fix_classr0 Zkey_funcr r r ro � s: � zRefactoringTool.get_fixersc O s � dS )z Called when an error occurs.Nr )rw �msg�args�kwdsr r r � log_error s zRefactoringTool.log_errorc G s |r || }| j �|� dS )zHook to log a message.N)ra �info�rw r� r� r r r r� s zRefactoringTool.log_messagec G s |r || }| j �|� d S r9 )ra �debugr� 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 )rw �old_text�new_text�filename�equalr r r � print_output s z RefactoringTool.print_outputc C s8 |D ].}t j�|�r$| �|||� q| �|||� qdS )z)Refactor a list of files and directories.N)�os�path�isdir� refactor_dir� refactor_file)rw �items�write� doctests_onlyZ dir_or_filer r r �refactor s zRefactoringTool.refactorc C s� t jd }t �|�D ]�\}}}| �d|� |�� |�� |D ]>}|�d�s>t j�|�d |kr>t j�||�} | � | ||� q>dd� |D �|dd�< qdS )z�Descends down a directory and refactor every Python file found. 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Files and subdirectories starting with '.' are skipped. �pyzDescending into %sr3 r c S s g | ]}|� d �s|�qS r2 )r )r4 Zdnr r r r7 2 r} z0RefactoringTool.refactor_dir.<locals>.<listcomp>N) r� �extsep�walkr� r� r r� �splitextr� r� ) rw Zdir_namer� r� Zpy_ext�dirpath�dirnames� filenamesr �fullnamer r r r� s �z RefactoringTool.refactor_dirc C s� zt |d�}W n4 tyB } z | �d||� W Y d}~dS d}~0 0 z t�|j�d }W |�� n |�� 0 tj |d|dd�� }|�� |fW d � S 1 s�0 Y dS ) zG Do our best to decode a Python source file correctly. �rbzCan't open %s: %sN)NNr r$ r{ ��encoding�newline) �open�OSErrorr� r �detect_encodingrH �closerF �read)rw r� �f�errr� r r r �_read_python_source4 s z#RefactoringTool._read_python_sourcec C s� | � |�\}}|du rdS |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 %sry )r� r� zNo changes in %s)r� r� �refactor_docstringr] �processed_file�refactor_string� was_changed�str)rw r� r� r� �inputr� �output�treer r r r� D s �z RefactoringTool.refactor_filec C s� t |�}d|v rtj| j_zfz| j�|�}W nF tyr } z.| �d||jj |� W Y d}~W | j| j_dS d}~0 0 W | j| j_n | j| j_0 ||_ | � 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. r[ zCan't parse %s: %s: %sNzRefactoring %s) rW r Z!python_grammar_no_print_statementr rg Z parse_stringr" r� � __class__r �future_featuresr� � refactor_tree)rw �datar rT r� r� r r r r� [ 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� r] r� r� r� r� )rw r� r� r� r� r r r �refactor_stdinv s z RefactoringTool.refactor_stdinc C s� t | j| j�D ]}|�||� q| �| j|�� � | �| j|�� � | j�|� � �}t |� � ��r�| jj D �]B}||v rj|| rj|| j tjjdd� |jr�|| j tjjd� t|| �D ]�}||| v r�|| �|� z t|� W n t� y� Y q�Y n0 |j�r||jv �rq�|�|�}|r�|�||�}|dur�|�|� |�� D ] }|j�s\g |_|j�|� �qJ| j�|� � �}|D ]*} | |v�r�g || < || � || � �q�q�qjqTt | j| j�D ]}|� ||� �q�|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)r� �reverser N) r rp rq Z start_tree� traverse_byru rv rt �runZleaves�anyr, rb r� r ZBase�depthZkeep_line_orderZ get_linenor) �remover � ValueErrorZfixers_applied�match� transform�replacer r. Z finish_treer� ) rw r� r r0 Z match_set�node�results�newZ new_matchesZfxrr r r r� � sJ z RefactoringTool.refactor_treec C sV |sdS |D ]D}||j D ]4}|�|�}|r|�||�}|dur|�|� |}qq 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� )rw rb Z traversalr� r0 r� r� r r r r� � s zRefactoringTool.traverse_byc C s� | j �|� |du r.| �|�d }|du r.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)rr r r� r� r� r] � write_file)rw r� r� r� r� r� r� r r r r� � s z RefactoringTool.processed_filec C s� zt j|d|dd�}W n4 tyJ } z | �d||� W Y d}~dS d}~0 0 |�R z|�|� W n2 ty� } z| �d||� W Y d}~n d}~0 0 W d � n1 s�0 Y | �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. �wr{ r� zCan't create %s: %sNzCan't write %s: %szWrote changes to %sT)rF r� r� r� r� r� rn )rw r� r� r� r� �fpr� r r r r� s B zRefactoringTool.write_filez>>> z... c C s g }d}d}d}d}|j dd�D ]�}|d7 }|�� �| j�r~|durZ|�| �||||�� |}|g}|�| j�} |d| � }q |dur�|�|| j �s�||| j�� d kr�|� |� q |dur�|�| �||||�� d}d}|� |� q |du�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� r{ ) � splitlines�lstripr �PS1r. �refactor_doctest�find�PS2�rstripr r� ) rw r� r� �result�blockZ block_lineno�indent�lineno�line�ir r r r� sD � �� � �z"RefactoringTool.refactor_docstringc s. z�� ||� �}W nh tyz } zP�j�tj�rL|D ]}��d|�d�� q4��d|||j j |� |W Y d}~S d}~0 0 �� ||��r*t |�j dd�}|d|d � ||d d� } }| dg|d ks�J | ��|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: %sNTr� r ry r c s g | ]}� �j | �qS r )r� )r4 r� �r� rw r r r7 ^ r} z4RefactoringTool.refactor_doctest.<locals>.<listcomp>)� parse_blockr" ra � isEnabledForrk �DEBUGr� r� r� r� r r� r� r� �endswithr� �pop) rw r� r� r� r� r� r� r� r� Zclippedr r� r r� D s( �"z RefactoringTool.refactor_doctestc C s� | j r d}nd}| js$| �d|� n"| �d|� | jD ]}| �|� q6| jrl| �d� | jD ]}| �|� q\| jr�t| j�dkr�| �d� n| �dt| j�� | jD ]"\}}}| j|g|�R i |�� q�d S ) N�werez need to bezNo files %s modified.zFiles that %s modified:z$Warnings/messages while refactoring:r zThere was 1 error:zThere were %d errors:)rn rr r� rm rj r� )rw r� �file�messager� r� r� r r r � summarizea 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_toksrI r� )rw r� r� r� r� r r r r� x s zRefactoringTool.parse_blockc c sd t �| �||�j�}|D ]F\}}\}}\} } } ||d 7 }| |d 7 } ||||f| | f| fV qdS )z;Wraps a tokenize stream to systematically modify start/end.r N)r rE � gen_lines�__next__) rw r� r� r� r- r rV Zline0Zcol0Zline1Zcol1Z line_textr r r r� � s zRefactoringTool.wrap_toksc c sx || j }|| j }|}|D ]N}|�|�r>|t|�d� V n(||�� d krVdV ntd||f ��|}q dV qldS )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=%rr{ )r� r� r r� r� �AssertionError)rw r� r� �prefix1Zprefix2�prefixr� r r r r� � s zRefactoringTool.gen_lines)NN)FF)FF)FF)F)NFN)N) r r r rd r� r� rx ro 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 rZ � s@ � 7( O � + rZ c @ s e Zd ZdS )�MultiprocessingUnsupportedNr 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|i |�� d | _d | _d S r9 )�superr� rx �queue� output_lock�rw r� �kwargs�r� r r rx � s z$MultiprocessRefactoringTool.__init__Fr c s> |dkr t t���|||�S z dd l� W n ty> t�Y n0 �jd urRtd��� �� �_� � � �_ � �fdd�t |�D �}zn|D ] }|� � q�t t���|||� W �j� � t |�D ]}�j�d � q�|D ]}|�� r�|� � q�d �_nL�j� � t |�D ]}�j�d � �q |D ]}|�� �r|� � �qd �_0 d S )Nr r z already doing multiple processesc s g | ]}� j �jd ��qS ))�target)�Process�_child)r4 r� ��multiprocessingrw r r r7 � s �z8MultiprocessRefactoringTool.refactor.<locals>.<listcomp>)r� r� r� r � ImportErrorr� r� � RuntimeError� JoinableQueue�Lockr� �range�startr� �put�is_alive)rw r� r� r� Z num_processes� processesr% r� r r r r� � sF � � � � z$MultiprocessRefactoringTool.refactorc s\ | j �� }|d urX|\}}z$tt| �j|i |�� W | j �� n | j �� 0 | j �� }q d S r9 )r� ri r� r� r� � task_done)rw Ztaskr� r r r r r � s ��z"MultiprocessRefactoringTool._childc s6 | j d ur | j �||f� ntt| �j|i |��S d S r9 )r� r r� r� r� r� r r r r� � s ��z)MultiprocessRefactoringTool.refactor_file)FFr )r r r rx r� r r� � __classcell__r r r r r� � s � r� )T)#rY � __author__rF r� r r� rk r� r' � itertoolsr Zpgen2r r r Z fixer_utilr r{ r r r rs r r" r r r1 r8 r; rW rX �objectrZ r� r� r r r r �<module> s8 (
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