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a n�hk5 � @ s� d dl mZ d dlZd dlmZmZ d dlmZ d dlm Z m Z d dl m Z m Z d dlmZ erld dlmZ ejd kr�d d lmZ n d d lmZ G d d � d e �Zd dd�dd�ZdS )� )� annotationsN)� TYPE_CHECKING�cast)�nodes)� BaseChecker�utils)�only_required_for_messages� safe_infer)� INFERENCE)�PyLinter)� � )� TypeGuardc @ s: e Zd ZdZdZddddddd d ifd d d d d ifd�Zdddddd�ffZdd�dd�Zed �ddd�dd ��Z ed �d dd�d d ��Z ed!�d"dd�d#d$��Z ed!�d%dd�d&d'��Z ed(�d)dd�d*d+��Z d dd�d,d-�Zd)dd�d.d/�Zed0d1d2d3�d4d5��Zed)d1d6d7�d8d9��Zed�d:dd�d;d<��Zd=S )>�CodeStyleCheckeram Checkers that can improve code consistency. As such they don't necessarily provide a performance benefit and are often times opinionated. Before adding another checker here, consider this: 1. Does the checker provide a clear benefit, i.e. detect a common issue or improve performance => it should probably be part of the core checker classes 2. Is it something that would improve code consistency, maybe because it's slightly better with regard to performance and therefore preferred => this is the right place 3. Everything else should go into another extension Z code_style)z<Consider using namedtuple or dataclass for dictionary values�&consider-using-namedtuple-or-dataclasszUEmitted when dictionary values can be replaced by namedtuples or dataclass instances.)z0Consider using an in-place tuple instead of list�consider-using-tuplez�Only for style consistency! Emitted where an in-place defined ``list`` can be replaced by a ``tuple``. Due to optimizations by CPython, there is no performance benefit from it.)zUse '%s' instead� consider-using-assignment-exprz�Emitted when an if assignment is directly followed by an if statement and both can be combined by using an assignment expression ``:=``. 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For example if an assignment is directly followed by an if statement: >>> x = 2 >>> if x: >>> ... Can be replaced by: >>> if (x := 2): >>> ... Note: Assignment expressions were added in Python 3.8 N�notr= �(z := �)zif �:r )r) �args)r5 �testr �Name�UnaryOp�op�operand�Compare�leftrP �opsZprevious_siblingr � _check_prev_sibling_to_if_stmt�name�(_check_ignore_assignment_expr_suggestionrE �replace�value� col_offsetr$ r, )r% r) Z node_name� prev_siblingZtest_strZ suggestionr& r& r' r: � sX � �� ��� �� � �� ��z6CodeStyleChecker._check_consider_using_assignment_exprznodes.NodeNG | Nonez str | Nonez)TypeGuard[nodes.Assign | nodes.AnnAssign])rn ri r c C s� | du s| j | j dkr dS t| tj�r\t| j�dkr\t| jd tj�r\| jd j|kr\dS t| tj �r�t| j tj�r�| j j|kr�dS dS )z}Check if previous sibling is an assignment with the same name. Ignore statements which span multiple lines. Nr Fr= T) ZtolinenoZ fromlinenor5 r rK rP �targetsrO ri rL rN )rn ri r& r& r' rh s& � ��� � � �z/CodeStyleChecker._check_prev_sibling_to_if_stmt�bool)r) ri r c C s� t | jtj�r�d}| �� }t| j�dkrFt | jd tj�rF| jd }nt |tj�rV|}|dur�t |jtj�r�t |jjtj �r�|jjj |ks�t |jtj �r�|jj |kr�dS dS )z�Return True if suggestion for assignment expr should be ignored. E.g., in cases where a match statement would be a better fit (multiple conditions). Nr= r TF) r5 r` r re � next_siblingrP �orelse�Ifrf ra ri )r) ri Z next_if_noderq r& r& r' rj / s* � �� � � � z9CodeStyleChecker._check_ignore_assignment_expr_suggestionz nodes.Assignc C s6 t �|�\}}|r2| jd|� d�||j|jtd� d S )Nr �=)r_ r) �linerm r* )r Zis_augmented_assignr, �linenorm r )r% r) Zis_augrc r& r& r' � visit_assignO s �z CodeStyleChecker.visit_assignN)�__name__� __module__� __qualname__�__doc__ri Zmsgs�optionsr( r r- r1 r8 r9 r; r/ r: � staticmethodrh rj rw r& r& r& r' r sZ �� ���,��� HC r r r )r r c C s | � t| �� d S r. )Zregister_checkerr )r r& r& r' �register] s r~ )� __future__r �sys�typingr r Zastroidr Zpylint.checkersr r Zpylint.checkers.utilsr r Zpylint.interfacesr Z pylint.lintr � version_infor �typing_extensionsr r~ r& r& r& r' �<module> s F
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