ó N`¾Tc@sÏdZddlZddlZddlZddlZyeWnek rZd„ZnXejd kr‹ejdƒZ ejdƒZ nejdƒZ ejdƒZ dd „Z d e fd „ƒYZdS( s-Refactored 'safe reference from dispatcher.pyiÿÿÿÿNcCs t|dƒS(Nt__call__(thasattr(tobject((sV/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/blinker/_saferef.pytcallable.sitim_selftim_funct__self__t__func__cCs¤yt|ƒ}Wn:tk rLt|ƒr<tj||ƒStj|ƒSnTX|dk r t|dƒs‡t|dƒs‡td|ƒ‚td|d|ƒ}|SdS(sÖReturn a *safe* weak reference to a callable target. - ``target``: The object to be weakly referenced, if it's a bound method reference, will create a BoundMethodWeakref, otherwise creates a simple weakref. - ``on_delete``: If provided, will have a hard reference stored to the callable to be called after the safe reference goes out of scope with the reference object, (either a weakref or a BoundMethodWeakref) as argument. RRsRsafe_ref target %r has im_self, but no im_func, don't know how to create referencettargett on_deleteN( tget_selftAttributeErrorRtweakreftreftNoneRtAssertionErrortBoundMethodWeakref(RR Rt reference((sV/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/blinker/_saferef.pytsafe_ref:s    ! RcBsqeZdZejƒZdd„Zdd„Zd„Z e e ƒZ d„Z e Z d„Z d„Zd„ZRS( s‰'Safe' and reusable weak references to instance methods. BoundMethodWeakref objects provide a mechanism for referencing a bound method without requiring that the method object itself (which is normally a transient object) is kept alive. Instead, the BoundMethodWeakref object keeps weak references to both the object and the function which together define the instance method. Attributes: - ``key``: The identity key for the reference, calculated by the class's calculate_key method applied to the target instance method. - ``deletion_methods``: Sequence of callable objects taking single argument, a reference to this object which will be called when *either* the target object or target function is garbage collected (i.e. when this object becomes invalid). These are specified as the on_delete parameters of safe_ref calls. - ``weak_self``: Weak reference to the target object. - ``weak_func``: Weak reference to the target function. Class Attributes: - ``_all_instances``: Class attribute pointing to all live BoundMethodWeakref objects indexed by the class's calculate_key(target) method applied to the target objects. This weak value dictionary is used to short-circuit creation so that multiple references to the same (object, function) pair produce the same BoundMethodWeakref instance. cOs„|j|ƒ}|jj|ƒ}|dk rA|jj|ƒ|Stt|ƒj|ƒ}||j|<|j ||||Ž|SdS(sõCreate new instance or return current instance. Basically this method of construction allows us to short-circuit creation of references to already- referenced instance methods. The key corresponding to the target is calculated, and if there is already an existing reference, that is returned, with its deletion_methods attribute updated. Otherwise the new instance is created and registered in the table of already-referenced methods. N( t calculate_keyt_all_instancestgetRtdeletion_methodstappendtsuperRt__new__t__init__(tclsRR t argumentstnamedtkeytcurrenttbase((sV/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/blinker/_saferef.pyR|s   cCs‘|d„}|g|_|j|ƒ|_t|ƒ}t|ƒ}tj||ƒ|_tj||ƒ|_t |ƒ|_ t |j ƒ|_ dS(sƒReturn a weak-reference-like instance for a bound method. - ``target``: The instance-method target for the weak reference, must have im_self and im_func attributes and be reconstructable via the following, which is true of built-in instance methods:: target.im_func.__get__( target.im_self ) - ``on_delete``: Optional callback which will be called when this weak reference ceases to be valid (i.e. either the object or the function is garbage collected). Should take a single argument, which will be passed a pointer to this object. cSsÃ|j}|j2y|jj|j=Wntk r8nXxƒ|D]{}yt|ƒrb||ƒnWq@tk rºytjƒWq»t k r¶t j ƒd}d|||fGHq»Xq@Xq@WdS(s=Set self.isDead to True when method or instance is destroyed.is3Exception during saferef %s cleanup function %s: %sN( Rt __class__RRtKeyErrorRt Exceptiont tracebackt print_excR tsystexc_info(tweaktselftmethodstfunctionte((sV/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/blinker/_saferef.pytremove¢s"      N( RRRR tget_funcR R t weak_selft weak_functstrt self_namet__name__t func_name(R)RR R-RR((sV/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/blinker/_saferef.pyR’s    cCs"tt|ƒƒtt|ƒƒfS(s°Calculate the reference key for this reference. Currently this is a two-tuple of the id()'s of the target object and the target function respectively. (tidR R.(RR((sV/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/blinker/_saferef.pyR¾scCsd|jj|j|jfS(s-Give a friendly representation of the object.s %s(%s.%s)(R!R3R2R4(R)((sV/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/blinker/_saferef.pyt__str__Çs cCs |ƒdk S(s'Whether we are still a valid reference.N(R(R)((sV/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/blinker/_saferef.pyt __nonzero__ÑscCs;t||jƒs(t|jt|ƒƒSt|j|jƒS(sCompare with another reference.(t isinstanceR!tcmpttypeR(R)tother((sV/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/blinker/_saferef.pyt__cmp__ÕscCsD|jƒ}|dk r@|jƒ}|dk r@|j|ƒSndS(s?Return a strong reference to the bound method. If the target cannot be retrieved, then will return None, otherwise returns a bound instance method for our object and function. Note: You may call this method any number of times, as it does not invalidate the reference. N(R/RR0t__get__(R)RR+((sV/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/blinker/_saferef.pyRÛs    N(R3t __module__t__doc__R tWeakValueDictionaryRRRRRt classmethodR6t__repr__R7R<R(((sV/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/blinker/_saferef.pyRXs    ,     (i(R?toperatorR&R$R Rt NameErrort version_infot attrgetterR R.RRRR(((sV/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/blinker/_saferef.pyt#s