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� ��abc @ s� d Z d d l Z d d l Z d d l Z d d l Z d d l m Z m Z d d l m Z d g Z d e f d � � YZ d d � Z d S( sE Parser for the environment markers micro-language defined in PEP 345.i����Ni ( t python_implementationt string_types( t in_venvt interprett Evaluatorc B s^ e Z d Z i d � d 6d � d 6d � d 6d � d 6d � d 6d � d 6d � d 6d � d 6d � d 6Z i e j d 6d e j d d 6e j j d d � d d 6e j d 6e e � � d 6e j � d 6e j � d 6e j � d 6e � d 6Z d, d! � Z d" � Z d# � Z d, d$ � Z d% � Z d& � Z d' � Z d( � Z d) � Z d* � Z d+ � Z RS(- s5 A limited evaluator for Python expressions. c C s | | k S( N( ( t xt y( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyt <lambda> t t eqc C s | | k S( N( ( R R ( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyR R t gtc C s | | k S( N( ( R R ( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyR R t gtec C s | | k S( N( ( R R ( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyR R t inc C s | | k S( N( ( R R ( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyR R t ltc C s | | k S( N( ( R R ( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyR R t ltec C s | S( N( ( R ( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyR R t notc C s | | k S( N( ( R R ( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyR ! R t noteqc C s | | k S( N( ( R R ( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyR " R t notint sys_platforms %s.%si t python_versiont i i t python_full_versiont os_namet platform_in_venvt platform_releaset platform_versiont platform_machinet platform_python_implementationc C s | p i | _ d | _ d S( su Initialise an instance. :param context: If specified, names are looked up in this mapping. N( t contextt Nonet source( t selfR ( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyt __init__3 s c C sH d } d | j | | | !} | | t | j � k rD | d 7} n | S( sH Get the part of the source which is causing a problem. i s %rs ...( R t len( R t offsett fragment_lent s( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyt get_fragment< s c C s t | d | d � S( s@ Get a handler for the specified AST node type. s do_%sN( t getattrR ( R t node_type( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyt get_handlerF s c C s t | t � r� | | _ i d d 6} | r8 | | d <n y t j | | � } Wq� t k r� } | j | j � } t d | � � q� Xn | j j j � } | j | � } | d k r� | j d k r� d } n | j | j � } t d | | f � � n | | � S( sf Evaluate a source string or node, using ``filename`` when displaying errors. t evalt modet filenames syntax error %ss (source not available)s don't know how to evaluate %r %sN( t isinstanceR R t astt parset SyntaxErrorR% R" t __class__t __name__t lowerR( R t col_offset( R t nodeR+ t kwargst eR$ R' t handler( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyt evaluateL s& c C s d | j j | j f S( Ns %s.%s( t valuet idt attr( R R4 ( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyt get_attr_keyf s c C s� t | j t j � s t } n- | j | � } | | j k pH | | j k } | sd t d | � � n | | j k r� | j | } n | j | } | S( Ns invalid expression: %s( R, R9 R- t Namet FalseR< R t allowed_valuesR/ ( R R4 t validt keyt result( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyt do_attributej s c C s� | j | j d � } | j j t j k } | j j t j k } | rL | sY | r� | r� xD | j d D]2 } | j | � } | r� | s� | rg | rg Pqg qg Wn | S( Ni i ( R8 t valuest opR0 R- t Ort And( R R4 RB t is_ort is_andt n( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyt do_boolopx s c s� � � f d � } � j } � j | � } t } x� t � j � j � D]� \ } } | | | � | j j j � } | � j k r� t d | � � n � j | � } � j | | | � } | s� Pn | } | } qF W| S( Nc sb t } t | t j � r3 t | t j � r3 t } n | s^ � j � j � } t d | � � n d S( Ns Invalid comparison: %s( t TrueR, R- t StrR> R% R3 R/ ( t lhsnodet rhsnodeR@ R$ ( R4 R ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyt sanity_check� s $ s unsupported operation: %r( t leftR8 RL t zipt opst comparatorsR0 R1 R2 t operatorsR/ ( R R4 RP RN t lhsRB RE RO t rhs( ( R4 R s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyt do_compare� s " c C s | j | j � S( N( R8 t body( R R4 ( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyt do_expression� s c C s| t } | j | j k r1 t } | j | j } n+ | j | j k r\ t } | j | j } n | sx t d | j � � n | S( Ns invalid expression: %s( R> R: R RL R? R/ ( R R4 R@ RB ( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyt do_name� s c C s | j S( N( R$ ( R R4 ( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyt do_str� s N( R1 t __module__t __doc__RU t syst platformt version_infot versiont splitt ost namet strR t releaset machineR R? R R R% R( R8 R< RC RK RX RZ R[ R\ ( ( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyR s@ c C s t | � j | j � � S( s� 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 ( R R8 t strip( t markert execution_context( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyR � s ( R^ R- Rd R_ R` t compatR R t utilR t __all__t objectR R R ( ( ( s? /usr/lib/python2.7/site-packages/pip/_vendor/distlib/markers.pyt <module> s �
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