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Code Editor : refactor.cpython-310.pyc
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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'|r"|dd� }|�|� q|S )zEReturn a sorted list of all available fix names in the given package.�*�fix_� N)� __import__�pkgutil� iter_modules�__path__� startswith�append)� fixer_pkg� remove_prefix�pkg� fix_names�finder�name�ispkg� r �'/usr/lib/python3.10/lib2to3/refactor.py�get_all_fix_names s �r c @ � e Zd ZdS )� _EveryNodeN��__name__� __module__� __qualname__r r r r r + � r c C s� t | tjtjf�r| jdu rt�| jhS t | tj�r$| jr"t| j�S t�t | tj �rAt � }| jD ]}|D ] }|� t|�� q4q0|S t d| ��)zf Accepts a pytree Pattern Node and returns a set of the pattern types which will match first. Nz$Oh no! I don't understand pattern %s) � isinstancer � NodePattern� LeafPattern�typer �NegatedPattern�content�_get_head_types�WildcardPattern�set�update� Exception)�pat�r�p�xr r r r+ / s � r+ c C s� t �t�}g }| D ];}|jr1zt|j�}W n ty# |�|� Y q w |D ] }|| �|� q&q |jdur?||j �|� q |�|� q tt j j � � t j j �D ] }|| �|� qPt|�S )z^ Accepts a list of fixers and returns a dictionary of head node type --> fixer list. N)� collections� defaultdict�list�patternr+ r r � _accept_typer r �python_grammar� symbol2number�values�tokens�extend�dict)� fixer_list� head_nodes�every�fixer�heads� node_typer r r �_get_headnode_dictK s( �� �rE 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 rJ r rJ r �get_fixers_from_packaged s �rM c C s | S �Nr )�objr r r � _identityk s rP c sj d}t �t�| �j�� � fdd�}ttjt jtj h�}t � }z� |� \}}||v r*q |tj kr5|r2ncd}n_|tj kr�|dkr�|� \}}|tj ksL|dkrMnR|� \}}|tj ks[|dkr\nH|� \}}|tj kro|dkro|� \}}|tj kr�|�|� |� \}}|tj ks�|d kr�n |� \}}|tj kstnnq W t|�S W t|�S W t|�S W t|�S ty� Y t|�S w ) NFc s t � �} | d | d fS )Nr r )�next)�tok��genr r �advancer s z(_detect_future_features.<locals>.advanceT�from� __future__�import�(�,)r �generate_tokens�io�StringIO�readline� frozensetr �NEWLINE�NL�COMMENTr- �STRING�NAME�OP�add� StopIteration)�source�have_docstringrU �ignore�features�tp�valuer rS r �_detect_future_featureso s\ ������ ��rn c @ s e Zd ZdZdS )� FixerErrorz A fixer could not be loaded.N)r! r" r# �__doc__r r r r ro � s ro c @ s� e Zd Zdddd�ZdZdZd4dd�Zdd � Zd d � Zd d � Z dd� Z dd� Z d5dd�Z d5dd�Z dd� Zd5dd�Zdd� Zd6d d �Zd d � Zd d!� Z d7d"d#�Zd8d$d%�Zd&Zd'Zd(d)� Zd*d+� Zd,d-� Zd.d/� Zd0d1� Z d2d3� Z dS )9�RefactoringToolF)�print_function� exec_function�write_unchanged_files�Fixr Nc C sH || _ |pg | _| j�� | _|dur| j�|� tj�� | _| jd r)| jj d= n | jd r3| jj d= | j� d�| _ g | _ t �d�| _g | _d| _tj| jtj| jd �| _| �� \| _| _g | _t�� | _ g | _ g | _ t | j| j�D ]#}|j r~| j �!|� qr|| jv r�| j �"|� qr|| jv r�| j �"|� qrt#| j �| _$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. Nrr �printrs �execrt rq F)�convert�logger)&�fixers�explicit�_default_options�copy�optionsr. r r9 �grammar�keywords�getrt �errors�logging� getLoggerry � fixer_log�wroter �Driverr rx � get_fixers� pre_order� post_order�files�bm� BottomMatcher�BM� bmi_pre_order�bmi_post_orderr � BM_compatible� add_fixerr rE �bmi_pre_order_heads�bmi_post_order_heads)�self� fixer_namesr~ r{ rB r r r �__init__� sD � � zRefactoringTool.__init__c C sJ g }g }| j D ]�}t|i i dg�}|�dd�d }|�| j�r(|t| j�d� }|�d�}| jd�dd � |D �� }zt ||�}W n t yQ t d ||f �d�w || j | j �} | jrm| jd urm|| jvrm| �d |� q| �d |� | jdkr~|�| � q| jdkr�|�| � qt d| j ��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 rG r ���N�_� c S s g | ]}|� � �qS r )�title)rH r2 r r r rL � s z.RefactoringTool.get_fixers.<locals>.<listcomp>zCan't find %s.%sTzSkipping optional fixer: %szAdding transformation: %s�pre�postzIllegal fixer order: %r� run_order��key)rz r �rsplitr � FILE_PREFIX�len�split� CLASS_PREFIX�join�getattr�AttributeErrorro r~ r� r{ � log_message� log_debug�orderr �operator� attrgetter�sort) r� �pre_order_fixers�post_order_fixers� fix_mod_path�modrI �parts� class_name� fix_classrB �key_funcr r r r� � s: � zRefactoringTool.get_fixersc O s � )z Called when an error occurs.r )r� �msg�args�kwdsr r r � log_error s zRefactoringTool.log_errorc G s |r|| }| j �|� dS )zHook to log a message.N)ry �info�r� r� r� r r r r� s zRefactoringTool.log_messagec G s |r|| }| j �|� d S rN )ry �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 )r� �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)r� �items�write� doctests_only� 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�< q dS )z�Descends down a directory and refactor every Python file found. 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Files and subdirectories starting with '.' are skipped. �pyzDescending into %srG r c S s g | ] }|� d �s|�qS rF )r )rH �dnr r r rL 2 � z0RefactoringTool.refactor_dir.<locals>.<listcomp>N) r� �extsep�walkr� r� r r� �splitextr� r� ) r� �dir_namer� r� �py_ext�dirpath�dirnames� filenamesr �fullnamer r r r� s ��z RefactoringTool.refactor_dirc C s� zt |d�}W n ty! } z| �d||� W Y d}~dS d}~ww zt�|j�d }W |�� n|�� w tj |d|dd��}|�� |fW d � S 1 sPw Y dS ) zG Do our best to decode a Python source file correctly. �rbzCan't open %s: %sN�NNr r1 r� ��encoding�newline) �open�OSErrorr� r �detect_encodingr^ �closer\ �read)r� r� �f�errr� r r r �_read_python_source4 s �� $�z#RefactoringTool._read_python_sourcec C s� | � |�\}}|du r dS |d7 }|r9| �d|� | �||�}| js&||kr1| �|||||� dS | �d|� dS | �||�}| jsG|rX|jrX| jt|�dd� |||d� dS | �d|� dS )zRefactors a file.N� zRefactoring doctests in %szNo doctest changes in %sr� )r� r� zNo changes in %s)r� r� �refactor_docstringrt �processed_file�refactor_string� was_changed�str)r� r� r� r� �inputr� �output�treer r r r� D s �z RefactoringTool.refactor_filec C s� t |�}d|v r tj| j_z3z| j�|�}W n# ty9 } z| �d||jj |� W Y d}~W | j| j_dS d}~ww W | j| j_n| j| j_w ||_ | � 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. rr zCan't parse %s: %s: %sNzRefactoring %s) rn r �!python_grammar_no_print_statementr r � parse_stringr/ r� � __class__r! �future_featuresr� � refactor_tree)r� �datar rk r� r� r r r r� [ s& � ��� z RefactoringTool.refactor_stringc C s� t j�� }|r)| �d� | �|d�}| js||kr"| �|d|� d S | �d� d S | �|d�}| js7|rB|jrB| �t |�d|� d S | �d� d S )Nz Refactoring doctests in stdinz<stdin>zNo doctest changes in stdinzNo changes in stdin) �sys�stdinr� r� r� rt r� r� r� r� )r� 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 ]�}||v r�|| r�|| j tjjdd� |jrV|| j tjjd� t|| �D ]o}||| v rk|| �|� zt|� W n tyz Y q\w |jr�||jv r�q\|�|�}|r�|�||�}|dur�|�|� |�� D ]}|js�g |_|j�|� q�| j�|� � �}|D ]} | |vr�g || < || � || � q�q\q4t |� � �s0t | 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 r� r� � start_tree� traverse_byr� r� r� �run�leaves�anyr; rz r� r �Base�depth�keep_line_order� get_linenor6 �remover � ValueError�fixers_applied�match� transform�replacer r= � finish_treer� ) r� r� r rB � match_set�node�results�new� new_matches�fxrr r r r� � sP � � �1z RefactoringTool.refactor_treec C sV |sdS |D ]"}||j D ]}|�|�}|r'|�||�}|dur'|�|� |}q qdS )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 )r� rz � traversalr rB r r r r r r� � s ���zRefactoringTool.traverse_byc C s� | j �|� |du r| �|�d }|du rdS ||k}| �||||� |r0| �d|� | js0dS |r<| �||||� dS | �d|� dS )zR Called when a file has been refactored and there may be changes. Nr zNo changes to %szNot writing changes to %s)r� r r� r� r� rt � write_file)r� r� r� r� r� r� r� r r r r� � s z RefactoringTool.processed_filec C s� z t j|d|dd�}W n ty% } z| �d||� W Y d}~dS d}~ww |�) z|�|� W n tyI } z | �d||� W Y d}~nd}~ww W d � n1 sTw 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)r\ r� r� r� r� r� r� )r� r� r� r� r� �fpr� r r r r s$ ����� � zRefactoringTool.write_filez>>> z... c C s g }d}d}d}d}|j dd�D ]d}|d7 }|�� �| j�r?|dur-|�| �||||�� |}|g}|�| j�} |d| � }q|dur\|�|| j �sV||| j�� d kr\|� |� q|durk|�| �||||�� d}d}|� |� q|dur�|�| �||||�� 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� ) r� r� r� �result�block� block_lineno�indent�lineno�line�ir r r r� sB � � � � z"RefactoringTool.refactor_docstringc s( z �� ||� �}W n4 ty= } z(�j�tj�r&|D ] }��d|�d�� q��d|||j j |� |W Y d}~S d}~ww �� ||�r�t |�j dd�}|d|d � ||d d� } }| dg|d ksjJ | ��|d �d�sy|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 r� r c s g | ] }� �j | �qS r )r )rH r! �r r� r r rL ^ r� z4RefactoringTool.refactor_doctest.<locals>.<listcomp>)� parse_blockr/ ry � isEnabledForr� �DEBUGr� r r� r� r! r� r� r �endswithr �pop) r� r r r r� r� r� r! r �clippedr r# r r D s, ��� "z RefactoringTool.refactor_doctestc C s� | j rd}nd}| js| �d|� n| �d|� | jD ]}| �|� q| jr6| �d� | jD ]}| �|� q.| jrdt| j�dkrF| �d� n | �dt| j�� | jD ]\}}}| j|g|�R i |�� qRd S d S ) N�werez need to bezNo files %s modified.zFiles that %s modified:z$Warnings/messages while refactoring:r zThere was 1 error:zThere were %d errors:)r� r� r� r� r� r� )r� r* �file�messager� r� r� r r r � summarizea s( �zRefactoringTool.summarizec C s" | j �| �|||��}t� |_|S )z�Parses a block into a tree. This is necessary to get correct line number / offset information in the parser diagnostics and embedded into the parse tree. )r � parse_tokens� wrap_toksr_ r� )r� r r r r� r r r r$ x s zRefactoringTool.parse_blockc c sf � t �| �||�j�}|D ]#\}}\}}\} } } ||d 7 }| |d 7 } ||||f| | f| fV q dS )z;Wraps a tokenize stream to systematically modify start/end.r N)r r[ � gen_lines�__next__) r� r r r r< r( rm �line0�col0�line1�col1� line_textr r r r/ � s � �zRefactoringTool.wrap_toksc c sx � || j }|| j }|}|D ]'}|�|�r |t|�d� V n||�� d kr,dV ntd||f ��|}q dV q8)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=%rTr� )r r r r� r �AssertionError)r� r r �prefix1�prefix2�prefixr! r r r r0 � s � �zRefactoringTool.gen_linesr� )FF)F)NFNrN ) 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 r- r$ r/ r0 r r r r rq � sB � 7( O � + rq c @ r )�MultiprocessingUnsupportedNr r r r r r; � r$ r; c sF e Zd Z� fdd�Z d � fdd� Z� fdd�Z� fd d �Z� ZS ) �MultiprocessRefactoringToolc s& t t| �j|i |�� d | _d | _d S rN )�superr< r� �queue� output_lock�r� r� �kwargs�r� r r r� � s z$MultiprocessRefactoringTool.__init__Fr c s2 |dkrt t���|||�S zdd l� W n ty t�w �jd ur'td��� �� �_� � � �_ � �fdd�t |�D �}z8|D ]}|� � q@t t���|||� W �j� � t |�D ]}�j�d � q[|D ] }|�� rp|� � qfd �_d S �j� � t |�D ]}�j�d � q|D ] }|�� r�|� � q�d �_w )Nr r z already doing multiple processesc s g | ] }� j �jd ��qS ))�target)�Process�_child)rH r" ��multiprocessingr� r r rL � s �z8MultiprocessRefactoringTool.refactor.<locals>.<listcomp>)r= r< r� rG � ImportErrorr; r> � RuntimeError� JoinableQueue�Lockr? �range�startr� �put�is_alive)r� r� r� r� � num_processes� processesr2 r" rB rF r r� � sL � � � � � � �z$MultiprocessRefactoringTool.refactorc sf | j �� }|d ur1|\}}ztt| �j|i |�� W | j �� n| j �� w | j �� }|d us d S d S rN )r> r� r= r< r� � task_done)r� �taskr� rA rB r r rE � s �� �z"MultiprocessRefactoringTool._childc s4 | j d ur| j �||f� d S tt| �j|i |��S rN )r> rN r= r< r� r@ rB r r r� � s ��z)MultiprocessRefactoringTool.refactor_file)FFr )r! r" r# r� r� rE r� � __classcell__r r rB r r< � s � r< )T)#rp � __author__r\ r� r r� r� r� r4 � itertoolsr �pgen2r r r � fixer_utilr r� r r r r� r r/ r r+ rE rM rP rn ro �objectrq r; r< r r r r �<module> s: (
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