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The docstring for each __parse_* function contains ENBF-inspired grammar representing the implementation. � N)�Any�List� NamedTuple�Optional�Tuple�Union� )� DEFAULT_RULES� Tokenizerc @ sH e Zd Zdeddfdd�Zdefdd�Zdefdd �Zdefd d �ZdS ) �Node�value�returnNc C s || _ d S �N�r )�selfr � r �E/opt/saltstack/salt/lib/python3.10/site-packages/packaging/_parser.py�__init__ s z Node.__init__c C s | j S r r �r r r r �__str__ s z Node.__str__c C s d| j j� d| � d�S )N�<z('z')>)� __class__�__name__r r r r �__repr__ s z Node.__repr__c C s t �r )�NotImplementedErrorr r r r � serialize s zNode.serialize)r � __module__� __qualname__�strr r r r r r r r r s r c @ � e Zd Zdefdd�ZdS )�Variabler c C � t | �S r �r r r r r r � zVariable.serializeN�r r r r r r r r r r � r c @ r )�Valuer c C s d| � d�S )N�"r r r r r r ! s zValue.serializeNr$ r r r r r& r% r& c @ r )�Opr c C r! r r" r r r r r & r# z Op.serializeNr$ r r r r r( % r% r( c @ s> e Zd ZU eed< eed< ee ed< eed< ee ed< dS )�ParsedRequirement�name�url�extras� specifier�markerN)r r r r �__annotations__r r � MarkerListr r r r r) 4 s r) �sourcer c C � t t| td��S �N)Zrules)�_parse_requirementr r �r1 r r r �parse_requirement? � r6 � tokenizerc C sf | � d� | jddd�}|j}| � d� t| �}| � d� t| �\}}}| jddd� t|||||�S )zI requirement = WS? IDENTIFIER WS? extras WS? requirement_details �WS� IDENTIFIERz1package name at the start of dependency specifier��expected�ENDzend of dependency specifier)�consume�expect�text� _parse_extras�_parse_requirement_detailsr) )r8 Z name_tokenr* r, r+ r- r. r r r r4 C s � r4 c C s� d}d}d}| � d�rF| �� | �d� | j}| jddd�j}| j dd d �r+|||fS | jdd d� | j dd d �r>|||fS t| |d d �}n#| j}t| �}| �d� | j dd d �r^|||fS t| ||redndd �}|||fS )z~ requirement_details = AT URL (WS requirement_marker?)? | specifier WS? (requirement_marker)? � N�ATr9 ZURLz URL after @r; r= T��peekzwhitespace after URLzURL and whitespace)� span_start�after�version specifierz#name and no valid version specifier)�check�readr> �positionr? r@ �_parse_requirement_marker�_parse_specifier)r8 r- r+ r. Z url_startZspecifier_startr r r rB X s: � �� rB rG rH c C s> | � d�s| jd|� d�|d� | �� t| �}| �d� |S )z3 requirement_marker = SEMICOLON marker WS? Z SEMICOLONz!Expected end or semicolon (after �))rG r9 )rJ �raise_syntax_errorrK � _parse_markerr> )r8 rG rH r. r r r rM � s � rM c C sd | j ddd�s g S | jdddd�� | �d� t| �}| �d� W d � |S 1 s+w Y |S ) zG extras = (LEFT_BRACKET wsp* extras_list? wsp* RIGHT_BRACKET)? Z LEFT_BRACKETTrE Z RIGHT_BRACKETr, �Zaroundr9 N)rJ �enclosing_tokensr> �_parse_extras_list)r8 r, r r r rA � s � � � rA c C s� g }| � d�s |S |�| �� j� | �d� | j ddd�r$| �d� n| � d�s, |S | �� | �d� | jddd�}|�|j� q) z> extras_list = identifier (wsp* ',' wsp* identifier)* r: Tr9 rE z"Expected comma between extra names�COMMAzextra name after commar; )rJ �appendrK r@ r> rP r? )r8 r, Z extra_tokenr r r rT � s � �rT c C sR | j dddd�� | �d� t| �}| �d� W d � |S 1 s"w Y |S )zr specifier = LEFT_PARENTHESIS WS? version_many WS? RIGHT_PARENTHESIS | WS? version_many WS? �LEFT_PARENTHESIS�RIGHT_PARENTHESISrI rR r9 N)rS r> �_parse_version_many)r8 �parsed_specifiersr r r rN � s � � � rN c C s� d}| � d�rQ| j}|| �� j7 }| j ddd�r#| jd|| jd d� | j d dd�r3| jd || jd� | �d � | � d �s@ |S || �� j7 }| �d � | � d�s|S ) z@ version_many = (SPECIFIER (WS? COMMA WS? SPECIFIER)*)? rC Z SPECIFIERZVERSION_PREFIX_TRAILTrE z6.* suffix can only be used with `==` or `!=` operatorsr )rG Zspan_endZVERSION_LOCAL_LABEL_TRAILz@Local version label can only be used with `==` or `!=` operatorsr9 rU )rJ rL rK r@ rP r> )r8 rZ rG r r r rY � s0 �� � �rY c C r2 r3 )�_parse_full_markerr r r5 r r r � parse_marker� r7 r\ c C s t | �}| jddd� |S )Nr= zend of marker expressionr; )rQ r? )r8 �retvalr r r r[ s r[ c C sB t | �g}| �d�r | �� }t | �}|�|j|f� | �d�s |S )z4 marker = marker_atom (BOOLOP marker_atom)+ ZBOOLOP)�_parse_marker_atomrJ rK �extendr@ )r8 Z expression�tokenZ expr_rightr r r rQ s �rQ c C s| | � d� | jddd�r3| jdddd�� | � d� t| �}| � d� W d � n1 s-w Y nt| �}| � d� |S ) zw marker_atom = WS? LEFT_PARENTHESIS WS? marker WS? RIGHT_PARENTHESIS WS? | WS? marker_item WS? r9 rW TrE rX zmarker expressionrR N)r> rJ rS rQ �_parse_marker_item)r8 r. r r r r^ s � �� r^ c C sJ | � d� t| �}| � d� t| �}| � d� t| �}| � d� |||fS )zG marker_item = WS? marker_var WS? marker_op WS? marker_var WS? r9 )r> �_parse_marker_var�_parse_marker_op)r8 Zmarker_var_leftZ marker_opZmarker_var_rightr r r ra * s ra c C sH | � d�rt| �� j�dd��S | � d�r t| �� j�S | jdd� dS )z/ marker_var = VARIABLE | QUOTED_STRING ZVARIABLE�.�_Z QUOTED_STRINGz+Expected a marker variable or quoted string)�messageN)rJ �process_env_varrK r@ �replace�process_python_strrP �r8 r r r rb 8 s �rb �env_varc C s | dv rt d�S t | �S )N)� platform_python_implementation�python_implementationrl )r )rk r r r rg F s rg � python_strc C s t �| �}tt|��S r )�astZ literal_evalr& r )rn r r r r ri M s ri c C sr | � d�r | �� td�S | � d�r(| �� | jddd� | jddd� td�S | � d �r4t| �� j�S | �d �S ) z& marker_op = IN | NOT IN | OP �IN�inZNOTr9 zwhitespace after 'not'r; z'in' after 'not'znot in�OPzJExpected marker operator, one of <=, <, !=, ==, >=, >, ~=, ===, in, not in)rJ rK r( r? r@ rP rj r r r rc R s �rc )(�__doc__ro �typingr r r r r r Z _tokenizerr r r r r& r( Z MarkerVarZ MarkerItemZ MarkerAtomr0 r) r r6 r4 rB �intrM rA rT rN rY r\ r[ rQ r^ ra rb rg ri rc r r r r �<module> sT � �3��� �
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