�
z fc @ 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/lib64/python2.7/weakref.pyt remove8 s
(
t TypeErrort lenR R t _removeR t setR t UserDictt __init__( t argst kwR R ( ( s /usr/lib64/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/lib64/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/lib64/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/lib64/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/lib64/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/lib64/python2.7/weakref.pyt has_keyg s
c C s d t | � S( Ns <WeakValueDictionary at %s>( t id( R ( ( s /usr/lib64/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/lib64/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/lib64/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/lib64/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/lib64/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/lib64/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/lib64/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/lib64/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/lib64/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/lib64/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/lib64/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/lib64/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/lib64/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/lib64/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/lib64/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.
( R R$ R t values( R ( ( s /usr/lib64/python2.7/weakref.pyt valuerefs s
c C s_ | j r | j � n g } x< | j j � D]+ } | � } | d k r, | j | � q, q, W| S( N( R R$ R RI R R ( R R; R R& ( ( s /usr/lib64/python2.7/weakref.pyRI s
N( t __name__t
__module__t __doc__R R$ R' R( R* R+ R- R0 R1 R4 t __copy__R8 R R: R2 R= R> t __iter__R@ R< RB R! RC RF RJ RI ( ( ( s /usr/lib64/python2.7/weakref.pyR
$ s4
R. c B s& e Z d Z d Z d � Z d � Z RS( s[ Specialized reference that includes a key corresponding to the value.
This is used in the WeakValueDictionary to avoid having to create
a function object for each key stored in the mapping. A shared
callback object can use the 'key' attribute of a KeyedRef instead
of getting a reference to the key from an enclosing scope.
R c C s" t j | | | � } | | _ | S( N( R t __new__R ( RE t obt callbackR R ( ( s /usr/lib64/python2.7/weakref.pyRP 6 s c C s t t | � j | | � d S( N( t superR. R ( R RQ RR R ( ( s /usr/lib64/python2.7/weakref.pyR ; s ( R ( RK RL RM t __slots__RP R ( ( ( s /usr/lib64/python2.7/weakref.pyR. * s c B s� e Z d Z d 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 d
� Z d � Z d � Z e Z d � Z d � Z d � Z d � Z d � Z d d � Z d d � Z RS( s� Mapping class that references keys weakly.
Entries in the dictionary will be discarded when there is no
longer a strong reference to the key. This can be used to
associate additional data with an object owned by other parts of
an application without adding attributes to those objects. This
can be especially useful with objects that override attribute
accesses.
c C sY i | _ t | � d � } | | _ g | _ t � | _ | d k rU | j | � n d S( Nc S sB | � } | d k r> | j r1 | j j | � q> | j | =n d S( N( R R R R R ( R? R R ( ( s /usr/lib64/python2.7/weakref.pyR L s
( R R R R R R R RF ( R RH R ( ( s /usr/lib64/python2.7/weakref.pyR J s c C sH | j } | j } x/ | rC y | | j � =Wq t k
r? q Xq Wd S( N( R R R! R% ( R R" R# ( ( s /usr/lib64/python2.7/weakref.pyR$ Z s
c C s | j t | � =d S( N( R R ( R R ( ( s /usr/lib64/python2.7/weakref.pyR( g s c C s | j t | � S( N( R R ( R R ( ( s /usr/lib64/python2.7/weakref.pyR' j s c C s d t | � S( Ns <WeakKeyDictionary at %s>( R, ( R ( ( s /usr/lib64/python2.7/weakref.pyR- m s c C s | | j t | | j � <d S( N( R R R ( R R R/ ( ( s /usr/lib64/python2.7/weakref.pyR0 p s c C sO t � } x? | j j � D]. \ } } | � } | d k r | | | <q q W| S( N( R R R2 R ( R R3 R R/ R& ( ( s /usr/lib64/python2.7/weakref.pyR4 s s c C sk d d l m } | j � } xH | j j � D]7 \ } } | � } | d k r, | | | � | | <q, q, W| S( Ni����( R5 ( R4 R5 R6 R R2 R ( R R7 R5 R3 R R/ R& ( ( s /usr/lib64/python2.7/weakref.pyR8 } s c C s | j j t | � | � S( N( R R: R ( R R R9 ( ( s /usr/lib64/python2.7/weakref.pyR: � s c C s2 y t | � } Wn t k
r$ d SX| | j k S( Ni ( R R R ( R R R ( ( s /usr/lib64/python2.7/weakref.pyR+ � s
c C s2 y t | � } Wn t k
r$ d SX| | j k S( Ni ( R R R ( R R R ( ( s /usr/lib64/python2.7/weakref.pyR* � s
c C sU g } xH | j j � D]7 \ } } | � } | d k r | j | | f � q q W| S( N( R R2 R R ( R R; R R/ R& ( ( s /usr/lib64/python2.7/weakref.pyR2 � s c c sZ t | � �H x@ | j j � D]/ \ } } | � } | d k r | | f Vq q WWd QXd S( N( R R R= R ( R R R/ R ( ( s /usr/lib64/python2.7/weakref.pyR= � s
c c s6 t | � �$ x | j j � D] } | Vq WWd QXd S( s� Return an iterator that yields the 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.
N( R R R> ( R R ( ( s /usr/lib64/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/lib64/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/lib64/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.
( R t keys( R ( ( s /usr/lib64/python2.7/weakref.pyt keyrefs� s
c C sI g } x< | j j � D]+ } | � } | d k r | j | � q q W| S( N( R RV R R ( R R; R R& ( ( s /usr/lib64/python2.7/weakref.pyRV � s c C s? x8 | j j � \ } } | � } | d k r | | f Sq Wd S( N( R RB R ( R R R/ R& ( ( s /usr/lib64/python2.7/weakref.pyRB � s
c G s | j j t | � | � S( N( R R! R ( R R R ( ( s /usr/lib64/python2.7/weakref.pyR! � s c C s | j j t | | j � | � S( N( R RC R R ( R R R9 ( ( s /usr/lib64/python2.7/weakref.pyRC � s c K s� | j } | d k ro t | d � s9 t i � | � } n x3 | j � D]" \ } } | | t | | j � <qF Wn t | � r� | j | � n d S( NR2 ( R R RD RE R2 R R R RF ( R RH RG R# R R/ ( ( s /usr/lib64/python2.7/weakref.pyRF � s N( RK RL RM R R R$ R( R' R- R0 R4 RN R8 R: R+ R* R2 R= RU R> RO R< RW RV RB R! RC RF ( ( ( s /usr/lib64/python2.7/weakref.pyR ? s2
( RM R t _weakrefR R R R R R R R t _weakrefsetR R t
exceptionsR
R t __all__R
R. R ( ( ( s /usr/lib64/python2.7/weakref.pyt <module> s :
�