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a n�h�5 � @ s� d Z ddlZddlmZ ddlmZ ddlmZ ddlmZ ej ej ej ej fZ ed�Zed�Zd Zejed �d d �ZG d d� de�ZdS )z*Comparison checker from the basic checker.� N)�nodes)�utils)� _BasicChecker)�HIGH)�==�!=�<�>z<=z>=)�is�is notr r z builtins.type)�call�returnc C s" t | tj�o t| j�dko | j S )z3Is this a call with exactly 1 positional argument ?� )� isinstancer �Call�len�args�keywords)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/base/comparison_checker.py�_is_one_arg_pos_call s r c @ s e Zd ZdZddddddgifdd d d d d �Zd,ejejejedd�dd�Z d-ejejejedd�dd�Z ejejdd�dd�Z ejdd�dd�Z ejdd�dd �Z ejdd�d d �Ze�d dd d!d"d#d$�ejdd�d%d&��Zejdd�d'd(�Zejejejdd)�d*d+�ZdS ).�ComparisonCheckera Checks for comparisons. - singleton comparison: 'expr == True', 'expr == False' and 'expr == None' - yoda condition: 'const "comp" right' where comp can be '==', '!=', '<', '<=', '>' or '>=', and right can be a variable, an attribute, a method or a function )�Comparison %s should be %s�singleton-comparisonzQUsed when an expression is compared to singleton values like True, False or None.z4Use isinstance() rather than type() for a typecheck.�unidiomatic-typecheckz�The idiomatic way to perform an explicit typecheck in Python is to use isinstance(x, Y) rather than type(x) == Y, type(x) is Y. 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r �_check_nan_comparison� s" �z'ComparisonChecker._check_nan_comparison)�literalr& r c C s� t |tjtjtjf�}d}t |tj�rTt |jt�s<|jdu r@dS t |jtt t t f�}|s\|r�|� � }d|v rvd}d}nd}d}|� ||�}| jd||||f|td� dS ) zMCheck if we compare to a literal, which is usually what we do not want to do.FNr r r r r )r r& � confidence)r r �List�Dict�Set�Constr' rC �bytes�str�int�floatr) �replacer* r ) r+ rE r& Zis_other_literalZis_constZincorrect_node_strZequal_or_not_equalZ is_or_is_notZfixed_node_strr r r �_check_literal_comparison� s4 ���z+ComparisonChecker._check_literal_comparisonr. c C s� |j }|jd d }|jd d }t|tj�rHt|tj�rH|j}|j}n$t|tj�rlt|tj�rl|j}|j}||kr�|� d|� d|� �}| jd||fd� dS )z�Check if identifier is compared against itself. :param node: Compare node :Example: val = 786 if val == val: # [comparison-with-itself] pass r r � r r% N) �left�opsr r rJ r' r; r< r* )r+ r& � left_operand� right_operand�operatorr, r r r �_check_logical_tautology� s ��z*ComparisonChecker._check_logical_tautologyc C sb |j }t|tj�sdS |jd d }t|tj�s4dS |jd d }| jd||j||jftd� dS )zGWhen two constants are being compared it is always a logical tautology.Nr r r )r& r rF )rR r r rJ rS r* r' r )r+ r& rT rU rV r r r �_check_constants_comparison� s �z-ComparisonChecker._check_constants_comparisonc C s� |j d d }|tvrd S tjtjf}|j|j d d }}d}||fD ]@}t�|�}t ||�rHd|� � vrHt dd� |j D ��sH|d7 }qH|dkr�| j d|d� d S )Nr r ztyping._SpecialFormc s s | ]}t |tj�V qd S r> )r r �Raise)�.0�xr r r � <genexpr> � z?ComparisonChecker._check_callable_comparison.<locals>.<genexpr>r r3 )rS �COMPARISON_OPERATORSr � FunctionDef�astroidZ BoundMethodrR r � safe_inferr Zdecoratornames�any�bodyr* ) r+ r& rV Zbare_callablesrT rU Znumber_of_bare_callables�operandr1 r r r �_check_callable_comparison s" � �� z,ComparisonChecker._check_callable_comparisonr r r r r r c C s� | � |� | �|� | �|� | �|� t|j�dkr:d S |j}|jd \}}|dv rl| j||||dkd� |dv r�| j||||dv d� |dv r�| � ||� d S ) Nr r > r r r )r# > r r r r > r r > r r ) re rW � _check_unidiomatic_typecheckrX r rS rR r- rD rP )r+ r& rR rV �rightr r r � visit_compare s$ � �z ComparisonChecker.visit_comparec C s8 |j d \}}|tv r4|j}t|�r4| j|||d� d S )Nr )r& rR rg )rS � TYPECHECK_COMPARISON_OPERATORSrR r �_check_type_x_is_y)r+ r& rV rg rR r r r rf A s z.ComparisonChecker._check_unidiomatic_typecheck)r& rR rg r c C s� t �|j�}t|tj�r$|�� tks(dS t|�rrt �|j�}t|tj�rr|�� tkrrt �|j d �}t|t �srdS | j d|d� dS )z(Check for expressions like type(x) == Y.Nr r r3 ) r ra �funcr r �ClassDefZqname� TYPE_QNAMEr r �LITERAL_NODE_TYPESr* )r+ r& rR rg Z left_funcZ right_funcZ right_argr r r rj H s � � � � z$ComparisonChecker._check_type_x_is_y)F)F)�__name__� __module__� __qualname__�__doc__Zmsgsr rB �ComparerC r- rD rP rW rX re r Zonly_required_for_messagesrh rf rj r r r r r sb � �7 �� < �� .� #� �r )rr r` r Zpylint.checkersr Z"pylint.checkers.base.basic_checkerr Zpylint.interfacesr rJ rH rG rI rn � frozensetr^ ri rm rB rC r r r r r r �<module> s
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