a
    hbòf}  ã                   @   s    d Z ddlZddlZddlZddlZddlmZ ddlmZm	Z	 ddl
mZ dgZe d¡Zd	d
„ Zdd„ ZG dd„ deƒZdd„ Zeƒ Z[eƒ Zddd„ZdS )zG
Parser for the environment markers micro-language defined in PEP 508.
é    Né   )Ústring_types)Úin_venvÚparse_marker)ÚNormalizedVersionÚ	interpretz<((\d+(\.\d+)*\w*)|\'(\d+(\.\d+)*\w*)\'|\"(\d+(\.\d+)*\w*)\")c                 C   s   t | tƒr| sdS | d dv S )NFr   ú'")Ú
isinstancer   )Úo© r   úX/home/httpd/docs/test/DocsMgr/lib/python3.9/site-packages/pip/_vendor/distlib/markers.pyÚ_is_literal   s    r   c                 C   s2   g }t  | ¡D ]}| t| ¡ d ƒ¡ qt|ƒS )Nr   )Ú_VERSION_PATTERNÚfinditerÚappendÚNVÚgroupsÚset)ÚsÚresultÚmr   r   r   Ú_get_versions!   s    r   c                   @   sf   e Zd ZdZdd„ dd„ dd„ dd„ dd„ dd„ d	d„ d
d„ dd„ dd„ dd„ dd„ dœZdd„ ZdS )Ú	Evaluatorz;
    This class is used to evaluate marker expessions.
    c                 C   s   | |kS ©Nr   ©ÚxÚyr   r   r   Ú<lambda>-   ó    zEvaluator.<lambda>c                 C   s   | |kS r   r   r   r   r   r   r   .   r   c                 C   s   | |kp| |kS r   r   r   r   r   r   r   /   r   c                 C   s   | |kS r   r   r   r   r   r   r   0   r   c                 C   s   | |k S r   r   r   r   r   r   r   1   r   c                 C   s   | |kp| |k S r   r   r   r   r   r   r   2   r   c                 C   s   | |kS r   r   r   r   r   r   r   3   r   c                 C   s   | |kp| |kS r   r   r   r   r   r   r   4   r   c                 C   s   | o|S r   r   r   r   r   r   r   5   r   c                 C   s   | p|S r   r   r   r   r   r   r   6   r   c                 C   s   | |v S r   r   r   r   r   r   r   7   r   c                 C   s   | |vS r   r   r   r   r   r   r   8   r   )ú==ú===ú~=ú!=ú<ú<=ú>ú>=ÚandÚorÚinúnot inc           	      C   s"  t |tƒrB|d dv r$|dd… }n||vr8td| ƒ‚|| }nÜt |tƒsPJ ‚|d }|| jvrntd| ƒ‚|d }|d	 }t|d ƒr¨t|d	 ƒr¨td
|||f ƒ‚|  ||¡}|  ||¡}|dksÐ|dkrê|dv rêt|ƒ}t|ƒ}n$|dk�r|dv �rt|ƒ}t	|ƒ}| j| ||ƒ}|S )zƒ
        Evaluate a marker expression returned by the :func:`parse_requirement`
        function in the specified context.
        r   r   r   éÿÿÿÿzunknown variable: %sÚopzop not implemented: %sÚlhsÚrhszinvalid comparison: %s %s %sÚpython_version)r#   r$   r%   r&   r    r   r"   r!   )r)   r*   )
r	   r   ÚSyntaxErrorÚdictÚ
operationsÚNotImplementedErrorr   Úevaluater   r   )	ÚselfÚexprÚcontextr   r,   ZelhsZerhsr-   r.   r   r   r   r4   ;   s4    


ÿ
zEvaluator.evaluateN)Ú__name__Ú
__module__Ú__qualname__Ú__doc__r2   r4   r   r   r   r   r   '   s   ôr   c                  C   s€   dd„ } t tdƒr(| tjjƒ}tjj}nd}d}||tjt ¡ t ¡ t 	¡ t 
¡ t ¡ ttƒ ƒt ¡ t ¡ d d… tjdœ}|S )Nc                 S   s<   d| j | j| jf }| j}|dkr8||d t| jƒ 7 }|S )Nz%s.%s.%sÚfinalr   )ÚmajorÚminorÚmicroÚreleaselevelÚstrÚserial)ÚinfoÚversionÚkindr   r   r   Úformat_full_version^   s
    z,default_context.<locals>.format_full_versionÚimplementationÚ0Ú é   )Úimplementation_nameÚimplementation_versionÚos_nameÚplatform_machineÚplatform_python_implementationÚplatform_releaseÚplatform_systemÚplatform_versionZplatform_in_venvÚpython_full_versionr/   Úsys_platform)ÚhasattrÚsysrG   rD   ÚnameÚosÚplatformÚmachineÚpython_implementationÚreleaseÚsystemrA   r   r/   )rF   rL   rK   r   r   r   r   Údefault_context]   s(    

ôr^   c              
   C   sˆ   zt | ƒ\}}W n4 tyD } ztd| |f ƒ‚W Y d}~n
d}~0 0 |rf|d dkrftd| |f ƒ‚ttƒ}|r|| |¡ t ||¡S )zò
    Interpret a marker and return a result depending on environment.

    :param marker: The marker to interpret.
    :type marker: str
    :param execution_context: The context used for name lookup.
    :type execution_context: mapping
    z)Unable to interpret marker syntax: %s: %sNr   ú#z*unexpected trailing data in marker: %s: %s)r   Ú	Exceptionr0   r1   ÚDEFAULT_CONTEXTÚupdateÚ	evaluatorr4   )ÚmarkerZexecution_contextr6   ÚrestÚer7   r   r   r   r   �   s    	&
)N)r;   rX   ÚrerV   rY   Úcompatr   Úutilr   r   rD   r   r   Ú__all__Úcompiler   r   r   Úobjectr   r^   ra   rc   r   r   r   r   r   Ú<module>   s"   
6