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Edit File: weakref.pyc
� �?gc @ s� d Z d d l Z d d l m Z m Z m Z m Z m Z m Z m Z m Z d d l m Z m Z d d l m Z e e f Z d d d d d d d d d d d d g Z d e j f d � � YZ d e f d � � YZ d e j f d � � YZ d S( s{ Weak reference support for Python. This module is an implementation of PEP 205: http://www.python.org/dev/peps/pep-0205/ i����N( t getweakrefcountt getweakrefst reft proxyt CallableProxyTypet ProxyTypet ReferenceTypet _remove_dead_weakref( t WeakSett _IterationGuard( t ReferenceErrorR R R R t WeakKeyDictionaryR R R R t ProxyTypest WeakValueDictionaryR c B s� e Z d Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z e Z d � Z d d � Z d � Z d � Z d � Z e Z d � Z d � Z d � Z d � Z d d � Z d � Z d � Z d � Z RS( s� Mapping class that references values weakly. Entries in the dictionary will be discarded when no strong reference to the value exists anymore c O s� | s t d � � n | d } | d } t | � d k rT t d t | � � � n t | � t d � } | | _ g | _ t � | _ t j j | | | � d S( NsG descriptor '__init__' of 'WeakValueDictionary' object needs an argumenti i s$ expected at most 1 arguments, got %dc S sN | � } | d k rJ | j r4 | j j | j � qJ | | j | j � n d S( N( t Nonet _iteratingt _pending_removalst appendt keyt data( t wrt selfreft _atomic_removalt self( ( s /usr/lib/python2.7/weakref.pyt remove8 s ( t TypeErrort lenR R t _removeR t setR t UserDictt __init__( t argst kwR R ( ( s /usr/lib/python2.7/weakref.pyR 0 s c C s< | j } | j } x# | r7 | j � } t | | � q Wd S( N( R R t popR ( R t lt dR ( ( s /usr/lib/python2.7/weakref.pyt _commit_removalsG s c C sF | j r | j � n | j | � } | d k r> t | � n | Sd S( N( R R$ R R t KeyError( R R t o( ( s /usr/lib/python2.7/weakref.pyt __getitem__P s c C s$ | j r | j � n | j | =d S( N( R R$ R ( R R ( ( s /usr/lib/python2.7/weakref.pyt __delitem__Y s c C sI | j r | j � n y | j | � } Wn t k r> t SX| d k S( N( R R$ R R% t FalseR ( R R R& ( ( s /usr/lib/python2.7/weakref.pyt __contains__^ s c C sI | j r | j � n y | j | � } Wn t k r> t SX| d k S( N( R R$ R R% R) R ( R R R& ( ( s /usr/lib/python2.7/weakref.pyt has_keyg s c C s d t | � S( Ns <WeakValueDictionary at %s>( t id( R ( ( s /usr/lib/python2.7/weakref.pyt __repr__p s c C s6 | j r | j � n t | | j | � | j | <d S( N( R R$ t KeyedRefR R ( R R t value( ( s /usr/lib/python2.7/weakref.pyt __setitem__s s c C s' | j r | j � n | j j � d S( N( R R$ R t clear( R ( ( s /usr/lib/python2.7/weakref.pyR1 x s c C se | j r | j � n t � } x? | j j � D]. \ } } | � } | d k r/ | | | <q/ q/ W| S( N( R R$ R R t itemsR ( R t newR R R& ( ( s /usr/lib/python2.7/weakref.pyt copy} s c C s� d d l m } | j r& | j � n | j � } xH | j j � D]7 \ } } | � } | d k rB | | | | | � <qB qB W| S( Ni����( t deepcopy( R4 R5 R R$ t __class__R R2 R ( R t memoR5 R3 R R R& ( ( s /usr/lib/python2.7/weakref.pyt __deepcopy__� s c C s] | j r | j � n y | j | } Wn t k r; | SX| � } | d k rU | S| Sd S( N( R R$ R R% R ( R R t defaultR R& ( ( s /usr/lib/python2.7/weakref.pyt get� s c C sk | j r | j � n g } xH | j j � D]7 \ } } | � } | d k r, | j | | f � q, q, W| S( N( R R$ R R2 R R ( R t LR R R& ( ( s /usr/lib/python2.7/weakref.pyR2 � s c c sm | j r | j � n t | � �E x= | j j � D], } | � } | d k r3 | j | f Vq3 q3 WWd QXd S( N( R R$ R R t itervaluesR R ( R R R/ ( ( s /usr/lib/python2.7/weakref.pyt iteritems� s c c sL | j r | j � n t | � �$ x | j j � D] } | Vq3 WWd QXd S( N( R R$ R R t iterkeys( R t k( ( s /usr/lib/python2.7/weakref.pyR> � s c c sL | j r | j � n t | � �$ x | j j � D] } | Vq3 WWd QXd S( s� Return an iterator that yields the weak references to the values. The references are not guaranteed to be 'live' at the time they are used, so the result of calling the references needs to be checked before being used. This can be used to avoid creating references that will cause the garbage collector to keep the values around longer than needed. N( R R$ R R R< ( R R ( ( s /usr/lib/python2.7/weakref.pyt itervaluerefs� s c c sd | j r | j � n t | � �< x4 | j j � D]# } | � } | d k r3 | Vq3 q3 WWd QXd S( N( R R$ R R R< R ( R R t obj( ( s /usr/lib/python2.7/weakref.pyR< � s c C sU | j r | j � n x8 | j j � \ } } | � } | d k r | | f Sq Wd S( N( R R$ R t popitemR ( R R R R& ( ( s /usr/lib/python2.7/weakref.pyRB � s c G sw | j r | j � n y | j j | � � } Wn t k rH d } n X| d k ro | rc | d St | � n | Sd S( Ni ( R R$ R R! R% R ( R R R R& ( ( s /usr/lib/python2.7/weakref.pyR! � s c C sx | j r | j � n y | j | � } Wn t k rC d } n X| d k rp t | | j | � | j | <| S| Sd S( N( R R$ R R% R R. R ( R R R9 R& ( ( s /usr/lib/python2.7/weakref.pyt setdefault� s c O s | s t d � � n | d } | d } t | � d k rT t d t | � � � n | rd | d n d } | j r� | j � n | j } | d k r� t | d � s� t i � | � } n x6 | j � D]% \ } } t | | j | � | | <q� Wn t | � r| j | � n d S( NsE descriptor 'update' of 'WeakValueDictionary' object needs an argumenti i s$ expected at most 1 arguments, got %dR2 ( R R R R R$ R t hasattrt typeR2 R. R t update( R t kwargsR t dictR# R R& ( ( s /usr/lib/python2.7/weakref.pyRF � s" c C s# | j r | j � n | j j � S( s~ Return a list of weak references to the values. The references are not guaranteed to be 'live' at the time they are used, so the result of calling the references needs to be checked before being used. This can be used to avoid creating references that will cause the garbage collector to keep the values around longer than needed. 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The references are not guaranteed to be 'live' at the time they are used, so the result of calling the references needs to be checked before being used. This can be used to avoid creating references that will cause the garbage collector to keep the keys around longer than needed. N( R R R> ( R R ( ( s /usr/lib/python2.7/weakref.pyt iterkeyrefs� s c c sN t | � �< x4 | j j � D]# } | � } | d k r | Vq q WWd QXd S( N( R R R> R ( R R RA ( ( s /usr/lib/python2.7/weakref.pyR> � s c c s6 t | � �$ x | j j � D] } | Vq WWd QXd S( N( R R R< ( R R/ ( ( s /usr/lib/python2.7/weakref.pyR< � s c C s | j j � S( sz Return a list of weak references to the keys. The references are not guaranteed to be 'live' at the time they are used, so the result of calling the references needs to be checked before being used. This can be used to avoid creating references that will cause the garbage collector to keep the keys around longer than needed. 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