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The docstring for each __parse_* function contains EBNF-inspired grammar representing the implementation. � )� annotationsN)�List�Literal� NamedTuple�Sequence�Tuple�Union� )� DEFAULT_RULES� Tokenizerc @ sJ e Zd ZdZddd�dd�Zdd�dd �Zdd�d d �Zdd�d d �ZdS )�Node��value�str�None)r �returnc C s || _ d S �Nr )�selfr � r �W/opt/bart/bart_venv/lib/python3.9/site-packages/setuptools/_vendor/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| j�d�S )N�<�(z)>)� __class__�__name__r 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__� __slots__r r r r r r r r r s r c @ s e Zd ZdZdd�dd�ZdS )�Variabler r 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 r$ s r$ c @ s e Zd ZdZdd�dd�ZdS )�Valuer r 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 ZdZdd�dd�ZdS )�Opr r r c C s t | �S r r% r r r r r 0 s z Op.serializeNr& r r r r r) - s r) )�and�or� 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. ; s r. r )�sourcer c C s t t| td��S �N)�rules)�_parse_requirementr r �r6 r r r �parse_requirementF s r; r )� tokenizerr c 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. )r< � name_tokenr/ r2 r0 r3 r4 r r r r9 J s � r9 z"tuple[str, str, MarkerList | None]c C s� d}d}d}| � d�r�| �� | �d� | j}| jddd�j}| j dd d �rV|||fS | jdd d� | j dd d �r||||fS t| |d d �}nF| j}t| �}| �d� | j dd d �r�|||fS t| ||r�dndd �}|||fS )z~ requirement_details = AT URL (WS requirement_marker?)? | specifier WS? (requirement_marker)? � N�ATr= �URLz URL after @r? rA T��peekzwhitespace after URLz$semicolon (after URL and whitespace))� span_startr@ zEcomma (within version specifier), semicolon (after version specifier)z0semicolon (after name with no version specifier))�check�readrB �positionrC rD �_parse_requirement_marker�_parse_specifier)r< r3 r0 r4 � url_start�specifier_startr r r rF _ s> � �� rF �int)r< rM r@ r c C s@ | � d�s"| jd|� d�|dd� | �� t| �}| �d� |S )z3 requirement_marker = SEMICOLON marker WS? � SEMICOLONz Expected z or endN�rM �span_endr= )rN �raise_syntax_errorrO � _parse_markerrB )r< rM r@ r4 r r r rQ � s � rQ r1 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_BRACKETTrK � RIGHT_BRACKETr2 ��aroundr= N)rN �enclosing_tokensrB �_parse_extras_list)r< r2 r r r rE � s � (rE 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)* r> r= TrK z"Expected comma between extra names�COMMAzextra name after commar? )rN �appendrO rD rB rY rC )r< r2 � 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_PARENTHESISzversion specifierr] r= N)r_ rB �_parse_version_many)r< �parsed_specifiersr r r rR � s � (rR 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)*)? rH � SPECIFIER�VERSION_PREFIX_TRAILTrK z6.* suffix can only be used with `==` or `!=` operatorsr rW �VERSION_LOCAL_LABEL_TRAILz@Local version label can only be used with `==` or `!=` operatorsr= ra )rN rP rO rD rY rB )r< rg rM r r r rf � s, �� rf c C s t t| td��S r7 )�_parse_full_markerr r r: r r r � parse_marker s rl c C s t | �}| jddd� |S )NrA zend of marker expressionr? )rZ rC )r< �retvalr r r rk s rk c C s: t | �g}| �d�r6| �� }t | �}|�|j|f� q |S )z4 marker = marker_atom (BOOLOP marker_atom)+ �BOOLOP)�_parse_marker_atomrN rO �extendrD )r< � expression�token� expr_rightr r r rZ s rZ 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? r= rd TrK re zmarker expressionr] N)rB rN r_ rZ �_parse_marker_item)r< r4 r r r ro s � * ro � MarkerItemc C sJ | � d� t| �}| � d� t| �}| � d� t| �}| � d� |||fS )zG marker_item = WS? marker_var WS? marker_op WS? marker_var WS? r= )rB �_parse_marker_var�_parse_marker_op)r< �marker_var_left� marker_op�marker_var_rightr r r rt 4 s rt � 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)rN �process_env_varrO rD �replace�process_python_strrY �r< r r r rv B s �rv )�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� P s r� )� python_strr c C s t �| �}tt|��S r )�ast� literal_evalr' r )r� r r r r r� W 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�NOTr= zwhitespace after 'not'r? z'in' after 'not'znot in�OPzJExpected marker operator, one of <=, <, !=, ==, >=, >, ~=, ===, in, not inN)rN rO r) rC rD rY r� r r r rw \ s �rw ))�__doc__� __future__r r� �typingr r r r r r � _tokenizerr r r r$ r' r) � MarkerLogicalr{ ru r, r- r. r; r9 rF rQ rE r` rR rf rl rk rZ ro rt rv r� r� rw r r r r �<module> s> 5
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