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reference to the value exists anymore
r c K s> t | �tfdd�}|| _g | _t� | _i | _| j|f|� d S )Nc S s6 |� }|d k r2|j r$|j�| j� n||j| j� d S r' )�
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z,WeakValueDictionary.__init__.<locals>.remove)r r �_remover: �setr9 r= �update)r r/ �kwr@ r r r �__init__f s z WeakValueDictionary.__init__c C s( | j }| j}|r$|�� }t||� q d S r' )r: r= �popr )r �l�dr< r r r �_commit_removalsw s
z$WeakValueDictionary._commit_removalsc C s4 | j r| �� | j| � }|d kr,t|��n|S d S r' �r: rI r= �KeyError�r r< �or r r � __getitem__� s
z WeakValueDictionary.__getitem__c C s | j r| �� | j|= d S r' )r: rI r= �r r< r r r � __delitem__� s z WeakValueDictionary.__delitem__c C s | j r| �� t| j�S r' )r: rI �lenr= �r r r r �__len__� s zWeakValueDictionary.__len__c C s> | j r| �� z| j| � }W n tk
r4 Y dS X |d k S r rJ rL r r r � __contains__� s z WeakValueDictionary.__contains__c C s d| j jt| �f S �Nz <%s at %#x>�r+ r2 �idrR r r r �__repr__� s z WeakValueDictionary.__repr__c C s& | j r| �� t|| j|�| j|< d S r' )r: rI �KeyedRefrA r= �r r< �valuer r r � __setitem__� s z WeakValueDictionary.__setitem__c C sV | j r| �� t� }t| ��0 | j�� D ] \}}|� }|d k r(|||< q(W 5 Q R X |S r' )r: rI r r r= �items)r �newr< r> rM r r r �copy� s
zWeakValueDictionary.copyc C sj ddl m} | jr| �� | �� }t| ��6 | j�� D ]$\}}|� }|d k r6|||||�< q6W 5 Q R X |S �Nr )�deepcopy)r_ ra r: rI r+ r r= r] )r �memora r^ r< r> rM r r r � __deepcopy__� s
z WeakValueDictionary.__deepcopy__Nc C sP | j r| �� z| j| }W n tk
r4 | Y S X |� }|d krH|S |S d S r' rJ )r r< �defaultr> rM r r r �get� s
zWeakValueDictionary.getc c sR | j r| �� t| ��2 | j�� D ] \}}|� }|d k r"||fV q"W 5 Q R X d S r' �r: rI r r= r] )r �kr> �vr r r r] � s
zWeakValueDictionary.itemsc c sJ | j r| �� t| ��* | j�� D ]\}}|� d k r"|V q"W 5 Q R X d S r' rf )r rg r> r r r �keys� s
zWeakValueDictionary.keysc c s6 | j r| �� t| �� | j�� E dH W 5 Q R X dS )a� Return an iterator that yields the weak references to the values.
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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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itervaluerefs� s
z!WeakValueDictionary.itervaluerefsc c sJ | j r| �� t| ��* | j�� D ]}|� }|d k r"|V q"W 5 Q R X d S r' rj �r r> r% r r r rk � s
zWeakValueDictionary.valuesc C s8 | j r| �� | j�� \}}|� }|d k r||fS qd S r' )r: rI r= �popitem)r r< r> rM r r r rn � s zWeakValueDictionary.popitemc G s` | j r| �� z| j�|�� }W n tk
r8 d }Y nX |d krX|rN|d S t|��n|S d S )Nr )r: rI r= rF rK )r r< �argsrM r r r rF s
zWeakValueDictionary.popc C s` z| j | � }W n tk
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setdefault s
z WeakValueDictionary.setdefaultc K sz | j r| �� | j}|d k rRt|d�s.t|�}|�� D ]\}}t|| j|�||< q6|�� D ]\}}t|| j|�||< qZd S �Nr] )r: rI r= �hasattr�dictr] rY rA )r r/ �kwargsrH r< rM r r r rC s
zWeakValueDictionary.updatec C s | j r| �� t| j�� �S )a~ Return a list of weak references to the values.
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to be checked before being used. This can be used to avoid
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keep the values around longer than needed.
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z WeakValueDictionary.valuerefs)r )N)N)N)r2 r3 r4 r5 rE rI rN rP rS rT rX r\ r_ �__copy__rc re r] ri �__iter__rl rk rn rF rp rC rv r r r r r Z s.
c s, e Zd ZdZdZdd� Z� fdd�Z� ZS )rY a[ Specialized reference that includes a key corresponding to the value.
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of getting a reference to the key from an enclosing scope.
�r< c C s t �| ||�}||_|S r' )r r# r< )r" �obr r< r r r r r# C s zKeyedRef.__new__c s t � �||� d S r' )r( rE )r rz r r< r* r r rE H s zKeyedRef.__init__)r2 r3 r4 r5 r6 r# rE r8 r r r* r rY 7 s rY c @ s� e Zd ZdZd+dd�Zdd� Zdd� Zd d
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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.
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<listcomp>w s z5WeakKeyDictionary._scrub_removals.<locals>.<listcomp>F)r= r: r{ rR r r} r �_scrub_removalsu s z!WeakKeyDictionary._scrub_removalsc C s d| _ | jt|�= d S r0 )r{ r= r rO r r r rP z s z WeakKeyDictionary.__delitem__c C s | j t|� S r' )r= r rO r r r rN ~ s z WeakKeyDictionary.__getitem__c C s( | j r| jr| �� t| j�t| j� S r' )r{ r: r rQ r= rR r r r rS � s zWeakKeyDictionary.__len__c C s d| j jt| �f S rU rV rR r r r rX � s zWeakKeyDictionary.__repr__c C s || j t|| j�< d S r' )r= r rA rZ r r r r\ � s z WeakKeyDictionary.__setitem__c C sH t � }t| ��0 | j�� D ] \}}|� }|d k r|||< qW 5 Q R X |S r' )r r r= r] )r r^ r< r[ rM r r r r_ � s
zWeakKeyDictionary.copyc C s\ ddl m} | �� }t| ��6 | j�� D ]$\}}|� }|d k r(|||�||< q(W 5 Q R X |S r` )r_ ra r+ r r= r] )r rb ra r^ r< r[ rM r r r rc � s
z WeakKeyDictionary.__deepcopy__c C s | j �t|�|�S r' )r= re r �r r< rd r r r re � s zWeakKeyDictionary.getc C s. z t |�}W n tk
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z WeakKeyDictionary.__contains__c c sD t | ��2 | j�� D ] \}}|� }|d k r||fV qW 5 Q R X d S r' �r r= r] )r r> r[ r< r r r r] � s
zWeakKeyDictionary.itemsc c s8 t | ��& | jD ]}|� }|d k r|V qW 5 Q R X d S r' )r r= rm r r r ri � s
zWeakKeyDictionary.keysc c s< t | ��* | j�� D ]\}}|� d k r|V qW 5 Q R X d S r' r� )r r> r[ r r r rk � s
zWeakKeyDictionary.valuesc C s
t | j�S )az Return a list of weak references to the keys.
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zWeakKeyDictionary.keyrefsc C s0 d| _ | j�� \}}|� }|d k r||fS qd S r0 )r{ r= rn )r r< r[ rM r r r rn � s
zWeakKeyDictionary.popitemc G s d| _ | jjt|�f|�� S r0 )r{ r= rF r )r r< ro r r r rF � s zWeakKeyDictionary.popc C s | j �t|| j�|�S r' )r= rp r rA r� r r r rp � s z WeakKeyDictionary.setdefaultc K s\ | j }|d k rFt|d�s$ti �|�}|�� D ]\}}||t|| j�< q,t|�rX| �|� d S rq )r= rr r" r] r rA rQ rC )r rs rt rH r< r[ r r r rC � s
zWeakKeyDictionary.update)N)N)N)N)r2 r3 r4 r5 rE rI r rP rN rS rX r\ r_ rw rc re rT r] ri rx rk r� rn rF rp rC r r r r r L s.
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� Zdd� Zedd� �Zedd� �Zejdd� �Zdd� Zedd� �Zedd� �Zd S ) r a Class for finalization of weakrefable objects
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and returns the result. After this the finalizer is dead, and
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zfinalize.__call__c C sH | j �| �}|o|�� }|dk rD| j �| d�rD||j|j|jp@i fS dS )z^If alive then mark as dead and return (obj, func, args, kwargs);
otherwise return NoneN)r� re r� rF r& ro rt �r r� r% r r r �detach8 s zfinalize.detachc C s: | j �| �}|o|�� }|dk r6||j|j|jp2i fS dS )zMIf alive then return (obj, func, args, kwargs);
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