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a
    Re}                     @   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Zdd Ze Z[e ZdddZdS )zG
Parser for the environment markers micro-language defined in PEP 508.
    N   )string_types)in_venvparse_marker)NormalizedVersion	interpretz<((\d+(\.\d+)*\w*)|\'(\d+(\.\d+)*\w*)\'|\"(\d+(\.\d+)*\w*)\")c                 C   s   t | tr| sdS | d dv S )NFr   '")
isinstancer   )o r   /builddir/build/BUILDROOT/alt-python39-pip-21.3.1-2.el8.x86_64/opt/alt/python39/lib/python3.9/site-packages/pip/_vendor/distlib/markers.py_is_literal   s    r   c                 C   s2   g }t | D ]}|t| d  qt|S )Nr   )_VERSION_PATTERNfinditerappendNVgroupsset)sresultmr   r   r   _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Zdd ZdS )	Evaluatorz;
    This class is used to evaluate marker expessions.
    c                 C   s   | |kS Nr   xyr   r   r   <lambda>-       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   )=====~=!=<<=>>=andorinnot inc           	      C   s"  t |trB|d dv r$|dd }n||vr8td| || }nt |tsPJ |d }|| jvrntd| |d }|d	 }t|d rt|d	 rtd
|||f | ||}| ||}|dks|dkr|dv rt|}t|}n$|dkr|dv rt|}t	|}| j| ||}|S )z
        Evaluate a marker expression returned by the :func:`parse_requirement`
        function in the specified context.
        r   r   r   zunknown variable: %sopzop not implemented: %slhsrhszinvalid comparison: %s %s %spython_version)r#   r$   r%   r&   r    r   r"   r!   )r)   r*   )
r	   r   SyntaxErrordict
operationsNotImplementedErrorr   evaluater   r   )	selfexprcontextr   r,   ZelhsZerhsr-   r.   r   r   r   r4   ;   s4    



zEvaluator.evaluateN)__name__
__module____qualname____doc__r2   r4   r   r   r   r   r   '   s   r   c                  C   s   dd } t tdr(| tjj}tjj}nd}d}||tjt t t	 t
 t tt t t d d tjd}|S )Nc                 S   s<   d| j | j| jf }| j}|dkr8||d t| j 7 }|S )Nz%s.%s.%sfinalr   )majorminormicroreleaselevelstrserial)infoversionkindr   r   r   format_full_version^   s
    z,default_context.<locals>.format_full_versionimplementation0    )implementation_nameimplementation_versionos_nameplatform_machineplatform_python_implementationplatform_releaseplatform_systemplatform_versionZplatform_in_venvpython_full_versionr/   sys_platform)hasattrsysrG   rD   nameosplatformmachinepython_implementationreleasesystemrA   r   r/   )rF   rL   rK   r   r   r   r   default_context]   s(    

r^   c              
   C   s   zt | \}}W n4 tyD } ztd| |f W Y d}~n
d}~0 0 |rf|d dkrftd| |f tt}|r||| t||S )z
    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   #z*unexpected trailing data in marker: %s: %s)r   	Exceptionr0   r1   DEFAULT_CONTEXTupdate	evaluatorr4   )markerZexecution_contextr6   rester7   r   r   r   r      s    	&
)N)r;   rX   rerV   rY   compatr   utilr   r   rD   r   r   __all__compiler   r   r   objectr   r^   ra   rc   r   r   r   r   r   <module>   s"   
6