File: //usr/local/lib/python3.9/site-packages/distlib/__pycache__/markers.cpython-39.pyc
a
��h� � @ s� d Z ddlZddlZddlZddlZddlmZ ddlmZm Z ddl
m Z dgZ
e�d�Zd d
hZd d � Zd
d� Zdd� ZG dd� de�Ze�d�Zdd� Ze� Z[e� Zddd�Zddd�ZdS )zG
Parser for the environment markers micro-language defined in PEP 508.
� N� )� string_types)�in_venv� parse_marker)�
LegacyVersion� interpretz<((\d+(\.\d+)*\w*)|\'(\d+(\.\d+)*\w*)\'|\"(\d+(\.\d+)*\w*)\")�python_version�python_full_versionc C s t | t�o| tv S �N)�
isinstancer �_VERSION_MARKERS��s� r �9/usr/local/lib/python3.9/site-packages/distlib/markers.py�_is_version_marker s r c C s t | t�r| sdS | d dv S )NFr �'")r r )�or r r � _is_literal" s r c C s dd� t �| �D �S )Nc S s h | ]}t |�� d ��qS )r )�LV�groups)�.0�mr r r � <setcomp>) � z _get_versions.<locals>.<setcomp>)�_VERSION_PATTERN�finditerr
r r r �
_get_versions( s r c
@ sf e Zd ZdZdd� dd� dd� dd� dd� dd� d d� d
d� d d� d d� d
d� dd� d� Zdd� ZdS )� Evaluatorz<
This class is used to evaluate marker expressions.
c C s | |kS r
r ��x�yr r r �<lambda>2 r zEvaluator.<lambda>c C s | |kS r
r r r r r r" 3 r c C s | |kp| |kS r
r r r r r r" 4 r c C s | |kS r
r r r r r r" 5 r c C s | |k S r
r r r r r r" 6 r c C s | |kp| |k S r
r r r r r r" 7 r c C s | |kS r
r r r r r r" 8 r c C s | |kp| |kS r
r r r r r r" 9 r c C s | o|S r
r r r r r r" : r c C s | p|S r
r r r r r r" ; r c C s | |v S r
r r r r r r" < r c C s | |vS r
r r r r r r" = r ) �==�===�~=�!=�<�<=�>�>=�and�or�in�not inc C s" t |t�rB|d dv r$|dd� }n ||vr8td| ��|| }n�t |t�sPJ �|d }|| jvrntd| ��|d }|d }t|d �r�t|d �r�td
|||f ��| �||�}| �||�}t|�s�t|�r�|d v r�t |�}t |�}n$t|��r|d v �rt |�}t
|�}| j| ||�}|S )
z�
Evaluate a marker expression returned by the :func:`parse_requirement`
function in the specified context.
r r r ���zunknown variable: %s�opzop not implemented: %s�lhs�rhsz invalid comparison: %s %s %s)r' r( r) r* r$ r# r& r% )r- r. ) r r � SyntaxError�dict�
operations�NotImplementedErrorr �evaluater r r ) �self�expr�context�resultr0 ZelhsZerhsr1 r2 r r r r7 @ s4
�
zEvaluator.evaluateN)�__name__�
__module__� __qualname__�__doc__r5 r7 r r r r r , s �r z\d+\.\d+c
C s� dd� } t td�r(| tjj�}tjj}nd}d}t�� }t�|�}|� d�}||t
jt� � t� � t�
� t�� t�� tt� �||tjd� }|S )Nc S s< d| j | j| jf }| j}|dkr8||d t| j� 7 }|S )Nz%s.%s.%s�finalr )�major�minor�micro� releaselevel�str�serial)�info�version�kindr r r �format_full_versionh s
z,default_context.<locals>.format_full_version�implementation�0� r ) �implementation_name�implementation_version�os_name�platform_machine� platform_python_implementation�platform_release�platform_system�platform_versionZplatform_in_venvr r � sys_platform)�hasattr�sysrK rH �name�platformr �_DIGITS�match�group�os�machine�python_implementation�release�systemrE r )rJ rO rN Zppvr �pvr; r r r �default_contextf s.
�rd c C s" t t�}|r|�|� t�| |�S r
)r4 �DEFAULT_CONTEXT�update� evaluatorr7 )r9 �execution_contextr: r r r �interpret_parsed� s
ri c
C sp zt | �\}}W n4 tyD } z td| |f ��W Y d}~n
d}~0 0 |rf|d dkrftd| |f ��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 � Exceptionr3 ri )�markerrh r9 �rest�er r r r � s &)N)N) r? r^ �rerX rZ �compatr �utilr r rH r r �__all__�compiler r r r r �objectr r[ rd re rg ri r r r r r �<module> s*
7
$