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r c @ s$ e Zd Zdd� Zdd� Zdd� ZdS )�SymbolTableFactoryc C s t �� | _d S �N)�weakrefZWeakValueDictionary�_SymbolTableFactory__memo��selfr r r �__init__ s zSymbolTableFactory.__init__c C s6 |j tjkr t||�S |j tjkrt||�S t||�S r )�typer �
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zSymbolTable.__init__c C sJ | j tkrd}nd| j j }| jjdkrd�|| j�S d�|| jj| j�S )N� z%s r z <{0}SymbolTable for module {1}>z <{0}SymbolTable for {1} in {2}>)� __class__r r- r0 �name�formatr1 )r" �kindr r r �__repr__1 s
�zSymbolTable.__repr__c C sX | j jtjkr dS | j jtjkrdS | j jtjkrdS | j jdv s*J d�| j j���dS )zwReturn the type of the symbol table.
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�moduleZfunction�class)� � � zunexpected type: {0}N)r0 r$ r Z TYPE_MODULEr% r& r6 r! r r r �get_type> s �zSymbolTable.get_typec C � | j jS )z,Return an identifier for the table.
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)r0 r5 r! r r r �get_nameR s zSymbolTable.get_namec C r? )zPReturn the number of the first line in the
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get_lineno[ s zSymbolTable.get_linenoc C s t | jjtjk�S )zJReturn *True* if the locals in the table
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or function.)rE r0 �nestedr! r r r � is_nestedg � zSymbolTable.is_nestedc C rG )z:Return *True* if the block has nested namespaces.
)rE r0 �childrenr! r r r � has_childrenl rJ zSymbolTable.has_childrenc C s | j j�� S )zKReturn a view object containing the names of symbols in the table.
)r0 �symbols�keysr! r r r �get_identifiersq rJ zSymbolTable.get_identifiersc C sT | j �|�}|du r(| jj| }| �|�}| jjdk}t||||d� }| j |< |S )zLLookup a *name* in the table.
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�z0SymbolTable.__check_children.<locals>.<listcomp>�r0 rK )r" r5 r r] r Z__check_children� s �z SymbolTable.__check_childrenc s � fdd�� j jD �S )z3Return a list of the nested symbol tables.
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Nc S rd r )r re r r r rg � rh z(Function.get_nonlocals.<locals>.<lambda>)�_Function__nonlocalsrj r! r r r �
get_nonlocals� rl zFunction.get_nonlocalsc C s$ | j du rdd� }| �|�| _ | j S )z:Return a tuple of free variables in the function.
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zFunction.get_frees)r- r. r/ ri rr r| rx rz rj rk ru ry r{ r~ r r r r r � s r c @ s e Zd ZdZdd� ZdS )r Nc C s6 | j du ri }| jjD ]}d||j< q t|�| _ | j S )z9Return a tuple of methods declared in the class.
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zSymbol.__init__c C s d� | j�S )Nz<symbol {0!r}>)r6 r� r! r r r r8 � s zSymbol.__repr__c C � | j S )z#Return a name of a symbol.
)r� r! r r r rB � s zSymbol.get_namec C s t | jtj@ �S )zBReturn *True* if the symbol is used in
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is_referenced� s zSymbol.is_referencedc C � t | jt@ �S )z4Return *True* if the symbol is a parameter.
)rE r� r r! r r r � is_parameter� � zSymbol.is_parameterc C �" t | jttfv p| jo| jt@ �S )z0Return *True* if the sysmbol is global.
)rE r� r r r� r� r r! r r r � is_global� � �zSymbol.is_globalc C r� )z(Return *True* if the symbol is nonlocal.)rE r� r r! r r r � is_nonlocal� � zSymbol.is_nonlocalc C � t | jtk�S )zOReturn *True* if the symbol is declared global
with a global statement.)rE r� r r! r r r �is_declared_global r� zSymbol.is_declared_globalc C r� )z.Return *True* if the symbol is local.
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t | j�S )a� Returns *True* if name binding introduces new namespace.
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objects, like an int or list, that does not introduce a new
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zSymbol.is_namespacec C r� )z.Return a list of namespaces bound to this name)r� r! r r r �get_namespaces. s zSymbol.get_namespacesc C s t | j�dkr td��| jd S )z�Return the single namespace bound to this name.
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