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The docstring for each __parse_* function contains EBNF-inspired grammar representing the implementation. � )� annotationsN)� NamedTuple�Sequence�Tuple�Union� )� DEFAULT_RULES� Tokenizerc @ sF e Zd Zddd�dd�Zdd�dd�Zdd�d d �Zdd�d d �Zd S )�Node�str�None)�value�returnc C s || _ d S �N�r )�selfr � r �u/sparta/input/_build_configuration/image_build+validate/lib/bmcenv/lib64/python3.9/site-packages/packaging/_parser.py�__init__ s z Node.__init__�r 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 �d S r )�NotImplementedErrorr r r r � serialize s zNode.serializeN)r � __module__� __qualname__r r r r r r r r r s r c @ s e Zd Zdd�dd�ZdS )�Variabler r c C s t | �S r �r r r r r r s zVariable.serializeN�r r r r r r r r r s r c @ s e Zd Zdd�dd�ZdS )�Valuer r c C s d| � d�S )N�"r r r r r r # s zValue.serializeNr" r r r r r# " s r# c @ s e Zd Zdd�dd�ZdS )�Opr r c C s t | �S r r! r r r r r ( s z Op.serializeNr" r r r r r% ' s r% � MarkerAtom� MarkerListc @ s6 e Zd ZU ded< ded< ded< ded< ded< d S ) �ParsedRequirementr �name�url� list[str]�extras� specifierzMarkerList | None�markerN)r r r �__annotations__r r r r r( 2 s r( r )�sourcer c C s t t| td��S �N)�rules)�_parse_requirementr r �r0 r r r �parse_requirement= s r5 r )� tokenizerr c C sf | � d� | jddd�}|j}| � d� t| �}| � d� t| �\}}}| jddd� t|||||�S )zI requirement = WS? 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(requirement_marker)? � N�ATr7 �URLz URL after @r9 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)r6 r- r* r. � url_start�specifier_startr r r r@ V s: � �� r@ �int)r6 rG rH r c C s> | � d�s | jd|� d�|d� | �� t| �}| �d� |S )z3 requirement_marker = SEMICOLON marker WS? � SEMICOLONz!Expected end or semicolon (after �))rG r7 )rJ �raise_syntax_errorrK � _parse_markerr< )r6 rG rH r. r r r rM � s � rM r+ c C sb | j ddd�sg S | jdddd��, | �d� t| �}| �d� W d � n1 sT0 Y |S ) zG extras = (LEFT_BRACKET wsp* extras_list? wsp* RIGHT_BRACKET)? � LEFT_BRACKETTrE � RIGHT_BRACKETr, ��aroundr7 N)rJ �enclosing_tokensr< �_parse_extras_list)r6 r, r r r r? � s � (r? c C s� g }| � d�s|S |�| �� j� | �d� | j ddd�rF| �d� n | � d�sRq�| �� | �d� | jddd�}|�|j� q"|S ) z> extras_list = identifier (wsp* ',' wsp* identifier)* r8 r7 TrE z"Expected comma between extra names�COMMAzextra name after commar9 )rJ �appendrK r> r< rT r= )r6 r, � extra_tokenr r r r[ � s r[ c C sP | j dddd��, | �d� t| �}| �d� W d � n1 sB0 Y |S )zr specifier = LEFT_PARENTHESIS WS? version_many WS? RIGHT_PARENTHESIS | WS? version_many WS? �LEFT_PARENTHESIS�RIGHT_PARENTHESISrI rX r7 N)rZ r< �_parse_version_many)r6 �parsed_specifiersr r r rN � s � (rN c C s� d}| � d�r�| j}|| �� j7 }| j ddd�rF| jd|| jd d� | j d dd�rf| jd || jd� | �d � | � d �s|q�|| �� j7 }| �d � q|S ) z@ version_many = (SPECIFIER (WS? COMMA WS? SPECIFIER)*)? rB � SPECIFIER�VERSION_PREFIX_TRAILTrE z6.* suffix can only be used with `==` or `!=` operatorsr )rG �span_end�VERSION_LOCAL_LABEL_TRAILz@Local version label can only be used with `==` or `!=` operatorsr7 r\ )rJ rL rK r> rT r< )r6 rb rG r r r ra � s, �� ra c C s t t| td��S r1 )�_parse_full_markerr r r4 r r r � parse_marker� s rh c C s t | �}| jddd� |S )Nr; zend of marker expressionr9 )rU r= )r6 �retvalr r r rg s rg c C s: t | �g}| �d�r6| �� }t | �}|�|j|f� q |S )z4 marker = marker_atom (BOOLOP marker_atom)+ �BOOLOP)�_parse_marker_atomrJ rK �extendr> )r6 � expression�token� expr_rightr r r rU s rU c C s| | � d� | jddd�rf| jdddd��, | � d� t| �}| � d� W d � qn1 sZ0 Y nt| �}| � d� |S ) zw marker_atom = WS? LEFT_PARENTHESIS WS? marker WS? RIGHT_PARENTHESIS WS? | WS? marker_item WS? r7 r_ TrE r` zmarker expressionrX N)r< rJ rZ rU �_parse_marker_item)r6 r. r r r rk s � * rk � MarkerItemc C sJ | � d� t| �}| � d� t| �}| � d� t| �}| � d� |||fS )zG marker_item = WS? marker_var WS? marker_op WS? marker_var WS? r7 )r< �_parse_marker_var�_parse_marker_op)r6 �marker_var_left� marker_op�marker_var_rightr r r rp ( s rp � MarkerVarc C sH | � d�r t| �� j�dd��S | � d�r8t| �� j�S | jdd� dS )z/ marker_var = VARIABLE | QUOTED_STRING �VARIABLE�.�_� QUOTED_STRINGz+Expected a marker variable or quoted string)�messageN)rJ �process_env_varrK r> �replace�process_python_strrT �r6 r r r rr 6 s �rr )�env_varr c C s | dv rt d�S t | �S d S )N)� platform_python_implementation�python_implementationr� )r )r� r r r r} D s r} )� python_strr c C s t �| �}tt|��S r )�ast� literal_evalr# r )r� r r r r r K s r c C sv | � d�r| �� td�S | � d�rP| �� | jddd� | jddd� td�S | � d �rht| �� j�S | �d �S d S ) z& marker_op = IN | NOT IN | OP �IN�in�NOTr7 zwhitespace after 'not'r9 z'in' after 'not'znot in�OPzJExpected marker operator, one of <=, <, !=, ==, >=, >, ~=, ===, in, not inN)rJ rK r% r= r> rT r� r r r rs P s �rs )'�__doc__� __future__r r� �typingr r r r � _tokenizerr r r r r# r% rw rq r& r r' r( r5 r3 r@ rM r? r[ rN ra rh rg rU rk rp rr r} r rs r r r r �<module> s< 3
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