U
ÀÒ.e# ã @ sŠ d Z ddlZddlZddlZddlZddlmZmZmZ ddl m
Z
m Z dgZ dd„ Z
G d d
„ d
eƒZd d „ Zeƒ Z[eƒ Zdd
d„ZdS )zG
Parser for the environment markers micro-language defined in PEP 508.
é Né )Úpython_implementationÚurlparseÚ string_types)Úin_venvÚ parse_markerÚ interpretc C s t | tƒr| sdS | d dkS )NFr ú'")Ú
isinstancer )Úo© r ú?/usr/lib/python3.8/site-packages/pip/_vendor/distlib/markers.pyÚ _is_literal s r c
@ sf e Zd ZdZdd„ dd„ dd„ dd„ dd„ dd„ d d„ d
d„ d d„ d d„ d
d„ dd„ dœ Zdd„ ZdS )Ú Evaluatorz;
This class is used to evaluate marker expessions.
c C s | |kS ©Nr ©ÚxÚyr r r
Ú$ ó zEvaluator.c C s | |kS r r r r r r
r % r c C s | |kp| |kS r r r r r r
r & r c C s | |kS r r r r r r
r ' r c C s | |k S r r r r r r
r ( r c C s | |kp| |k S r r r r r r
r ) r c C s | |kS r r r r r r
r * r c C s | |kp| |kS r r r r r r
r + 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 | |kS r r r r r r
r . r c C s | |kS r r r r r r
r / r ) z==z===z~=z!=úz>=ÚandÚorÚinznot inc C sÔ t |tƒrB|d dkr$|dd… }qÐ||kr8td| ƒ‚|| }nŽt |tƒsPt‚|d }|| jkrntd| ƒ‚|d }|d }t|d ƒr¨t|d ƒr¨td
|||f ƒ‚| ||¡}| ||¡}| j| ||ƒ}|S ) zƒ
Evaluate a marker expression returned by the :func:`parse_requirement`
function in the specified context.
r r r éÿÿÿÿzunknown variable: %sÚopzop not implemented: %sÚlhsÚrhsz invalid comparison: %s %s %s) r
r Ú SyntaxErrorÚdictÚAssertionErrorÚ
operationsÚNotImplementedErrorr Úevaluate) ÚselfÚexprÚcontextÚresultr ZelhsZerhsr r r r r
r$ 2 s$
zEvaluator.evaluateN)Ú__name__Ú
__module__Ú __qualname__Ú__doc__r" r$ r r r r
r s ôr c
C s€ dd„ } t tdƒr(| tjjƒ}tjj}nd}d}||tjt ¡ t ¡ t ¡ t
¡ t ¡ t t ƒ ƒt
¡ t
¡ d d… tjdœ }|S )Nc S s< d| j | j| jf }| j}|dkr8||d t| jƒ 7 }|S )Nz%s.%s.%sÚfinalr )ÚmajorÚminorÚmicroÚ releaselevelÚstrÚserial)ÚinfoÚversionZkindr r r
Úformat_full_versionN s
z,default_context..format_full_versionÚimplementationÚ0Ú é ) Úimplementation_nameÚimplementation_versionZos_nameZplatform_machineZ platform_python_implementationZplatform_releaseZplatform_systemZplatform_versionZplatform_in_venvZpython_full_versionÚpython_versionZ sys_platform)ÚhasattrÚsysr7 r5 ÚnameÚosÚplatformÚmachiner ÚreleaseÚsystemr2 r r= )r6 r< r; r( r r r
Údefault_contextM s(
ôrF c
C s† zt | ƒ\}}W n2 tk
rB } ztd| |f ƒ‚W 5 d}~X Y nX |rd|d dkrdtd| |f ƒ‚ttƒ}|rz| |¡ 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 Exceptionr r ÚDEFAULT_CONTEXTÚupdateÚ evaluatorr$ )ZmarkerZexecution_contextr& ÚrestÚer' r r r
r q s "
)N)r, rA r? rB ÚreÚcompatr r r Úutilr r Ú__all__r Úobjectr rF rI rK r r r r r
Ú s /