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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