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@ s e Zd ZdZdd� ZdS )�_ImportStarInFunctionz%import * only allowed at module levelc C s |� � o| jjjd uS r� )Zis_star_importr r� r� r� rc rc rd r� � s z _ImportStarInFunction.is_issueNr rc rc rc rd r; � s r; c @ s e Zd ZdZdd� ZdS )�_FutureImportRulez?from __future__ imports must occur at the beginning of the filec C s� t |�r�t|�sdS |�� D ]~\}}|j}tt�}| jjdkrH|�d� |dkr`| j |dd� q |dkr|d}| j ||d� q ||vr d | }| j ||d� q d S ) NT�r � � annotationsZbracesz not a chancer� �barry_as_FLUFLz-Seriously I'm not implementing this :) ~ Davez future feature %s is not defined) ru r� � get_pathsr\ r0 �ALLOWED_FUTURESr r. r� r� )r� r^ � from_nameZ future_namer� Zallowed_futures�mr� rc rc rd r� � s z_FutureImportRule.is_issueNr rc rc rc rd r< � s r< rM c @ s e Zd ZdZdd� ZdS )� _StarExprRulez2iterable unpacking cannot be used in comprehensionc C s� dd� }| j jdkr |j}nt|�}|jg t�d�R vrb|jdkrP|jd dksb| j|dd � d S ||�r�| j jdkr�| j|d d � n| j|dd � d S |jjd kr�|jjd jtv r�| j|| j d � d S ) Nc S s< | j d ur8| j } | jdkr dS | jg t�d�R vr dS q dS )N�del_stmtTr F)rx rV r� ry rc rc rd �check_delete_starred s z4_StarExprRule.is_issue.<locals>.check_delete_starredr� r r r r+ �!can't use starred expression herer� zcannot delete starredr r# ) r r. rx rz rV r� rX r� rl �message_iterable_unpacking)r� r^ rG �ancestorrc rc rd r� s& � � z_StarExprRule.is_issueN)r� r� r� rI r� rc rc rc rd rE � s rE )�typesc @ s e Zd Zdd� ZdS )�_StarExprParentRulec s� � fdd�� � ||j �r�dd� |jD �}dd� |D �}t|�dkrl| jjdk rTd}nd }| j|d |d � n0|r�|�|d �}|d kr�d }| j|d |d � d S )Nc sD |d u r dS |j }|dkr dS |dkr8| j|jd jk S � | |j�S )NFrG r� rF )rV r� rX rx )r^ rJ r_ �r� rc rd r� $ s z3_StarExprParentRule.is_issue.<locals>.is_definitionc S s g | ]}|d kr|�qS )r1 rc r rc rc rd rq 2 rr z0_StarExprParentRule.is_issue.<locals>.<listcomp>c S s g | ]}|j d kr|�qS )rM r| r rc rc rd rq 3 rr r# r� z%two starred expressions in assignmentz*multiple starred expressions in assignmentr� r � z1too many expressions in star-unpacking assignment)rx rX rY r r. r� r3 )r� r^ r� rS r� �countrc rM rd r� # s z _StarExprParentRule.is_issueN�r� r� r� r� rc rc rc rd rL ! s rL r� c @ s e Zd ZdZdd� Zdd� ZdS )�_AnnotatorRulez illegal target for annotationc C s |j S r� r r� rc rc rd r� G s z_AnnotatorRule.get_nodec C s� d }|j jd }t|�}z |j}W n ty4 Y nH0 d|v sT|jdkrZ|d dkrZd}n|jdkrt|d dkrtd}|d }|d u r�|jd ks�|jd v r�|jd kr�|jd dks�d S nd }| j|j || d� d S )Nr r1 r r+ r- r/ r0 rF r� rB rG Tz,only single target (not %s) can be annotatedr� )rx rX r[ rv rV r� )r� r^ r_ �lhsrX rG r� rc rc rd r� J s. �� �z_AnnotatorRule.is_issueNr� rc rc rc rd rQ A s rQ r� c @ s e Zd Zdd� ZdS )� _ArgumentRulec C s� |j d }| jjdk r t|�}|j d dkr||jdkr||jdkrX| jjdk rRd}qnd}n| jjdk rjd }nd}| j||d � t|�r�|jjd kr�| j|d d � d S ) Nr r r# �=r� r z lambda cannot contain assignmentz=expression cannot contain assignment, perhaps you meant "=="?z keyword can't be an expressionr� r� r� )rX r r. r[ rV r� r� rx )r� r^ ra r� rc rc rd r� h s z_ArgumentRule.is_issueNrP rc rc rc rd rS f s 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�propertyr� r� rc rc rc rd rV � s rV r0 r c @ s e Zd ZdZdd� ZdS )�_ParameterRulez-non-default argument follows default argumentc C s� t � }d}d}t|�D ]�}|jdkr8|jdkrd}d}q|jj|v r`d}| j|j||jj d� |�|jj� |s|jd u r�|js�|r� dS q|jr�d}d}qd}qd S )NFr6 r. Tz.duplicate argument '%s' in function definitionr� ) rW r~ rV r\ r� r� rY �defaultr2 )r� r^ Z param_namesZ default_onlyZ star_seen�pr� rc rc rd r� � s* z_ParameterRule.is_issueNr rc rc rc rd r\ � s r\ r c @ s e Zd ZdZdd� ZdS )� _TryStmtRulez default 'except:' must be lastc C sP d }|j dd d� D ]6}|dv r$ qL|dkr2|}q|d ur| j|| jd� qd S )Nr )�elser �exceptr� )rX r� r� )r� r Zdefault_exceptZ except_clauserc rc rd r� � s z_TryStmtRule.is_issueNr rc rc rc rd r_ � s r_ rT c @ s> e Zd ZdZdZdZdZdd� Zdd� Zd d � Z dd d �Z dS )� _FStringRuleNz3f-string expression part cannot include a backslashz'f-string: expressions nested too deeplyzAf-string: invalid conversion character: expected 's', 'r', or 'a'c C s | � |jdd � |� d S r� ��_check_fstring_contentsrX )r� � format_spec�depthrc rc rd �_check_format_spec� s z _FStringRule._check_format_specc C s� |dkr| j || jd� |jd }d|�� v r>| j || jd� |jd }|jdkrh|jdkrh|jd }n|}|jdkr�|jd }|jd vr�| j || jd� |jd }|jd kr�| �||d � d S ) Nr r� r# r� r6 rT r Zfstring_conversion)�sr �ar� Zfstring_format_spec) r� �message_nestedrX �get_code� message_exprrV r\ �message_conversionrg )r� � fstring_exprrf rL Z children_2� conversionr� re rc rc rd �_check_fstring_expr� s z _FStringRule._check_fstring_exprc C s | � |jdd� � d S )Nr# rF rc )r� rT rc rc rd r� s z_FStringRule.is_issuer c C s$ |D ]}|j dkr| �||� qd S )Nrn )rV rp )r� rX rf Zfstring_contentrc rc rd rd s z$_FStringRule._check_fstring_contents)r ) r� r� r� Z_fstring_grammarrl rj rm rg rp r� rd rc rc rc rd rb � s rb c @ s e Zd Zddd�ZdS )�_CheckAssignmentRuleFc C s� d }|j }|dkrd}�n |dk�r�|jd d� \}}t|�}|d u �r:|j dkr�| jjdk rdd}n*|jd d kr�| jjd k r�d }q�d }nd }n�|dkr�|dkr�| jjdk r�d}n| jjd k r�d }nd }n�|dkr�t|j�dkr�| jjdk r�d}nd }n�|dv �r:|j dk�rd}nj|j dk�rn|�rD|dk�r6d}n|dk�rDd}|jd d d� D ]} | �| |||� �qTn| �||||� �n�|dk�r�|jdk�r�d}n | jjdk �r�d}n t|j�}�nz|dk�r�|jdk�r:| jjd k �r�d }nd }�nH|d k�rd }�n6|d v �rd}�n$|dk�r6d } | j || d!� �n|d"k�rHd#}�n�|d$v �r�|jd% d&k�rhd'}n�|jd( d)k�r�| jjd k �r�d}nd*}nf|jd+ } | j d,k�s�J �| jd% dk�r�d-}n6|�r�| jd% dk�r�d.}n|�r:| jd% d/k�r:d0}�n>|d1k�r"| jjdk �rd}nd2}�n|d3v �rV|jd d d� D ]} | �| |||� �q<n�d4|v �rj|d5k�s~d6|v �s~|d7v �r�| jjd k �r�d}nd*}n�|d5k�r:|�r�| jjd8k�r�d9}n| j |d:d!� n^| jjd8k�r�|j } nt |�} | j t v�r*|�s*| j dk�r| jd% dk�s*d;} | j || d!� | �|jd � |d u�r�|�rTd<| } n0| jjdk �rfd=nd>} d?� | |�rzd@ndA|g�} | j || d!� d S )BNr r r r r r r" r# r$ r& r( r) r* r1 r2 )r+ r/ r? r5 r r+ r- r/ r0 r3 r4 r6 r7 r8 r9 r: r; z+assignment to yield expression not possibler� r@ rA rB r rD rE r� r% rR rF rG rH rI rJ rK rT rU )r r r� rL rM rN rO r� rS rH z4starred assignment target must be in a list or tuplez)cannot use assignment expressions with %szcan't�cannot� �deletez assign to)rV rX rW r r. rY �_check_assignmentr\ r] r� rx rz r� �join)r� r^ � is_deletion� is_namedexpr� is_aug_assignr r_ ra rb ri r� rG rJ rr rc rc rd ru s� �� � � z&_CheckAssignmentRule._check_assignmentN)FFF)r� r� r� ru rc rc rc rd rq s rq r c @ s e Zd ZdZdd� ZdS )� _CompForRulez>asynchronous comprehension outside of an asynchronous functionc C s< |j d }|jdkr | �|� |jj d dko:| jj�� S )Nr# � expr_listr �async)rX rV ru rx r r� r� )r� r^ r{ rc rc rd r� � s �z_CompForRule.is_issueNr rc rc rc rd rz � s rz r� c @ s e Zd ZdZde Zdd� ZdS )� _ExprStmtRulez+illegal expression for augmented assignmentz'{target}' is an c C s� |j d }|dko|jdk}| jjdks,|sP|j d dd� D ]}| j||d� q<|r�t|j d �}|jd ks�|jd v r�|j d jd kr�|j d j d d kr�dS | jjdkr�dS | j|| jjt |j d | jj�d�d� d S )Nr# rT r� r r� r )ry r r� rB rG rF r+ FT)�targetr� ) rX rV r r. ru r[ r� �extended_messagerX rZ )r� r^ Z augassignry Z before_equalr~ rc rc rd r� � s. ��� ��z_ExprStmtRule.is_issueN)r� r� r� r� r r� rc rc rc rd r} � s r} � with_itemc @ s e Zd Zdd� ZdS )� _WithItemRulec C s | � |jd � d S �Nr )ru rX )r� r� rc rc rd r� � s z_WithItemRule.is_issueNrP rc rc rc rd r� � s r� rF c @ s e Zd Zdd� ZdS )� _DelStmtRulec C s& |j d }|jdkr"| j|dd� d S )Nr# r{ T)rw �rX rV ru )r� rF ri rc rc rd r� � s z_DelStmtRule.is_issueNrP rc rc rc rd r� � s r� r{ c @ s e Zd Zdd� ZdS )� _ExprListRulec C s$ |j d d d� D ]}| �|� qd S r� )rX ru )r� r{ rL rc rc rd r� � s z_ExprListRule.is_issueNrP rc rc rc rd r� � s r� r c @ s e Zd Zdd� ZdS )� _ForStmtRulec C s" |j d }|jdkr | �|� d S )Nr# r{ r� )r� r r{ rc rc rd r� � s z_ForStmtRule.is_issueNrP rc rc rc rd r� � s r� �namedexpr_testc @ s e Zd Zdd� ZdS )�_NamedExprRulec s� |j d }dd� }||�r,d}| j||d� t� � � fdd���fdd �}||�}|r�| jjjjd krxd }| j||d� d d � � D �}|jdkr�|j|v r�d|j }| j||d� | j|dd� d S )Nr c S s8 | j }|d u r|S |jdkr.|jd | kr.|S |} q d S )Nr r rw )r^ rx rc rc rd � search_namedexpr_in_comp_for� s z=_NamedExprRule.is_issue.<locals>.search_namedexpr_in_comp_forzKassignment expression cannot be used in a comprehension iterable expressionr� c s6 | j dkr| }n| j dkr$| jd }� �t|�� d S )Nr r r# )rV rX r� r� )r �comp)r rc rd �process_comp_for s z1_NamedExprRule.is_issue.<locals>.process_comp_forc sF d}| � dd�} | d u rqB| jD ] }|jtv r � |� d} qq q|S )NFr r T)r� rX rV rl )r^ Z has_ancestorsri )r� rc rd �search_all_comp_ancestors s z:_NamedExprRule.is_issue.<locals>.search_all_comp_ancestorsr� zKassignment expression within a comprehension cannot be used in a class bodyc S s g | ]}|j d kr|j�qS )r� )rV r\ )ro rL rc rc rd rq $ rr z+_NamedExprRule.is_issue.<locals>.<listcomp>r� zGassignment expression cannot rebind comprehension iteration variable %rT)rx ) rX r� r0 r r� r^ rV r\ ru )r� r� ra r� r� r� Z search_all�namelistrc )r r� rd r� � s( �z_NamedExprRule.is_issueNrP rc rc rc rd r� � s r� )Fr" r- r% r� � contextlibr Zparso.normalizerr r r r Zparso.python.tokenizer r� r� r� r� rB rl rZ rj rW ru r[ rz r~ r� r� r� r� r� r� r� r� r� Z register_ruler� r� r� r r r r r r r r/ r5 r7 r8 r: r; r< rE rL rQ rS rU rV r\ r_ rb rq rz r} r� r� r� r� r� rc rc rc rd �<module> s� V t # $ $ 5 ( "
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