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a n�h�5 � @ s~ d dl mZ d dlZd dlZd dlmZmZmZ d dlmZ d dl m Z d dl m Z m Z ddd �d d �ZG d d � d ej�ZdS )� )� annotationsN)�bases�nodes�util)�checkers)�utils)�HIGH� INFERENCEzstr | nodes.NodeNG�bool��node�returnc C s t | tj�o | jdko | jduS )Nr F)� isinstance�astroid�Const�value�r � r ��/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/pylint/checkers/refactoring/implicit_booleaness_checker.py�_is_constant_zero s �r c @ s e Zd ZdZdZdddddgifdd d d d d gd�fdddd dgd�fd�ZdZh d�Ze� d�ddd�dd��Z e dd d �d d ��Z e� d�d dd�d!d"��Z e� d#d d�d$dd�d%d&��Zd$dd�d'd(�Zd$dd�d)d*�Zd+d,d�d-d.�Zd+d,d+d/d0�d1d2�Ze d3d4d�d5d6��Zd7S )8�ImplicitBooleanessCheckera� Checks for incorrect usage of comparisons or len() inside conditions. Incorrect usage of len() Pep8 states: For sequences, (strings, lists, tuples), use the fact that empty sequences are false. Yes: if not seq: if seq: No: if len(seq): if not len(seq): Problems detected: * if len(sequence): * if not len(sequence): * elif len(sequence): * elif not len(sequence): * while len(sequence): * while not len(sequence): * assert len(sequence): * assert not len(sequence): * bool(len(sequence)) Incorrect usage of empty literal sequences; (), [], {}, For empty sequences, (dicts, lists, tuples), use the fact that empty sequences are false. Yes: if variable: if not variable No: if variable == empty_literal: if variable != empty_literal: Problems detected: * comparison such as variable == empty_literal: * comparison such as variable != empty_literal: Z refactoringzQDo not use `len(SEQUENCE)` without comparison to determine if a sequence is empty� use-implicit-booleaness-not-lenz�Empty sequences are considered false in a boolean context. 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The inherited names include 'object'. c S s g | ] }|j �qS r )�name)r& rj r r r � <listcomp>T � zDImplicitBooleanessChecker.base_names_of_instance.<locals>.<listcomp>)r r �Instancerp Z ancestorsr r r r r8 J s z0ImplicitBooleanessChecker.base_names_of_instanceN)�__name__� __module__� __qualname__�__doc__rp Zmsgs�optionsrW r Zonly_required_for_messagesr= � staticmethodr: rF rL rK rJ ri r` r8 r r r r r sR &� �� ��+* � >1r )� __future__r rU r r r r Zpylintr Zpylint.checkersr Zpylint.interfacesr r r Z BaseCheckerr r r r r �<module> s
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