U
    (Q^#                     @   sp   d dl mZ d dlmZ dZdZdZdZddd	Zdd
dZ	G dd de
ZG dd deZG dd deZdS )    )NodeVisitor)	iteritemsparamresolvealiasZ	undefinedNc                 C   s*   t |d}t|}| D ]}|| q|S N)parent)SymbolsFrameSymbolVisitorvisit)nodesparent_symbolssymvisitornode r   5/tmp/pip-install-bd4o36v9/Jinja2/jinja2/idtracking.pyfind_symbols   s
    
r   c                 C   s   t |d}||  |S r   )r	   analyze_node)r   r   r   r   r   r   symbols_for_node   s    

r   c                   @   sx   e Zd ZdddZdd ZdddZdd	 Zd
d Zdd Zdd Z	dd Z
dd Zdd Zdd Zdd Zdd ZdS )r	   Nc                 C   sD   |d kr |d krd}n
|j d }|| _ || _i | _i | _t | _d S )Nr      )levelr   refsloadssetstores)selfr   r   r   r   r   __init__   s    
zSymbols.__init__c                 K   s   t | }|j|f| d S N)RootVisitorr   )r   r   kwargsr   r   r   r   r   '   s    zSymbols.analyze_nodec                 C   s.   d| j |f }|| j|< |d k	r*|| j|< |S )Nzl_%d_%s)r   r   r   )r   nameloadidentr   r   r   _define_ref+   s
    

zSymbols._define_refc                 C   s.   || j kr| j | S | jd k	r*| j|S d S r   )r   r   	find_load)r   targetr   r   r   r%   2   s    


zSymbols.find_loadc                 C   s.   || j kr| j | S | jd k	r*| j|S d S r   )r   r   find_refr   r!   r   r   r   r'   8   s    


zSymbols.find_refc                 C   s"   |  |}|d krtd| |S )NzITried to resolve a name to a reference that was unknown to the frame (%r))r'   AssertionError)r   r!   rvr   r   r   ref>   s    
zSymbols.refc                 C   sB   t | j}|j| j | j |_| j |_| j |_|S r   )	object__new__	__class____dict__updater   copyr   r   )r   r*   r   r   r   r1   E   s    zSymbols.copyc                 C   s`   | j | || jkr\| jd k	rJ| j|}|d k	rJ| j|t|fd d S | j|td fd d S N)r"   )r   addr   r   r'   r$   VAR_LOAD_ALIASVAR_LOAD_UNDEFINED)r   r!   Z	outer_refr   r   r   storeM   s    

zSymbols.storec                 C   s   | j | | j|td fdS r2   )r   r3   r$   VAR_LOAD_PARAMETERr(   r   r   r   declare_parameter_   s    zSymbols.declare_parameterc                 C   s(   |  |}|d kr$| j|t|fd d S r2   )r'   r$   VAR_LOAD_RESOLVE)r   r!   r&   r   r   r   r"   c   s    
zSymbols.loadc           	      C   s   i }|D ]0}|j D ]$}|| j kr"q||dd ||< qq|D ].}| j|j | j|j | j |j  q>t|D ]l\}}|t|krqv| |}|d k	std| j	d k	r| j	|}|d k	rt
|f| j|< qvt|f| j|< qvd S )Nr   r   zshould not happen)r   getr   r0   r   r   lenr'   r)   r   r4   r9   )	r   Zbranch_symbolsr   branchr&   r   r!   Zbranch_countZouter_targetr   r   r   branch_updateh   s*    



zSymbols.branch_updatec                 C   s>   i }| }|d k	r:|j D ]}||kr| |||< q|j}q|S r   )r   r'   r   )r   r*   r   r!   r   r   r   dump_stores   s    
zSymbols.dump_storesc                 C   sH   t  }| }|d k	rDt| jD ]\}\}}|tkr|| q|j}q
|S r   )r   r   r   r7   r3   r   )r   r*   r   r&   instr_r   r   r   dump_param_targets   s    zSymbols.dump_param_targets)NN)N)__name__
__module____qualname__r   r   r$   r%   r'   r+   r1   r6   r8   r"   r=   r>   rA   r   r   r   r   r	      s   


r	   c                   @   sj   e Zd Zdd Zdd Ze Z Z Z Z Z	 Z
Zdd Zdd Zd	d
 ZdddZdd Zdd ZdS )r   c                 C   s   t || _d S r   )r
   sym_visitorr   symbolsr   r   r   r      s    zRootVisitor.__init__c                 K   s   |  D ]}| j| qd S r   Ziter_child_nodesrE   r   r   r   r    childr   r   r   _simple_visit   s    zRootVisitor._simple_visitc                 K   s   |j D ]}| j| qd S r   bodyrE   r   rI   r   r   r   visit_AssignBlock   s    
zRootVisitor.visit_AssignBlockc                 K   s"   |j ddD ]}| j| qd S )N)call)excluderH   rI   r   r   r   visit_CallBlock   s    zRootVisitor.visit_CallBlockc                 K   s   |j D ]}| j| qd S r   rL   rI   r   r   r   visit_OverlayScope   s    
zRootVisitor.visit_OverlayScoperM   c                 K   s   |dkr"| j j|jdd |j}nN|dkr2|j}n>|dkrh| j j|jdd |jd k	rd| j |j d S td|pvdD ]}| j | qxd S )NrM   T)store_as_paramelsetestzUnknown for branchr   )rE   r   r&   rM   else_rU   RuntimeError)r   r   Z
for_branchr    r<   itemr   r   r   	visit_For   s    
zRootVisitor.visit_Forc                 K   s4   |j D ]}| j| q|jD ]}| j| qd S r   )targetsrE   r   rM   )r   r   r    r&   rJ   r   r   r   
visit_With   s    

zRootVisitor.visit_Withc                 O   s   t d|jj d S )NzCannot find symbols for %r)NotImplementedErrorr.   rB   )r   r   argsr    r   r   r   generic_visit   s    zRootVisitor.generic_visitN)rM   )rB   rC   rD   r   rK   Zvisit_Templatevisit_Blockvisit_Macrovisit_FilterBlockvisit_Scopevisit_IfZvisit_ScopedEvalContextModifierrN   rQ   rR   rY   r[   r^   r   r   r   r   r      s    
r   c                   @   s   e Zd ZdZdd Zd$ddZdd Zd	d
 Zdd Zdd Z	dd Z
dd Zdd Zdd Zdd Zdd Zdd Zdd Zdd  Zd!d" Zd#S )%r
   zA visitor for `Frame.inspect`.c                 C   s
   || _ d S r   )rG   rF   r   r   r   r      s    zFrameSymbolVisitor.__init__Fc                 K   sT   |s|j dkr| j|j n2|j dkr8| j|j n|j dkrP| j|j dS )z2All assignments to names go through this function.r   r6   r"   N)ctxrG   r8   r!   r6   r"   )r   r   rS   r    r   r   r   
visit_Name   s    

zFrameSymbolVisitor.visit_Namec                 K   s   | j |j d S r   )rG   r"   r!   r   r   r    r   r   r   visit_NSRef   s    zFrameSymbolVisitor.visit_NSRefc                    s^   j |jf  j fdd}||j}||j}||jpDd}j|||g d S )Nc                    s0      _}| D ]}j|f  q_|S r   )r1   rG   r   )r   r*   Zsubnoder    Zoriginal_symbolsr   r   r   inner_visit   s
    z0FrameSymbolVisitor.visit_If.<locals>.inner_visitr   )r   rU   rG   rM   Zelif_rV   r=   )r   r   r    ri   Zbody_symbolsZelif_symbolsZelse_symbolsr   rh   r   rc      s    

zFrameSymbolVisitor.visit_Ifc                 K   s   | j |j d S r   )rG   r6   r!   rf   r   r   r   r`      s    zFrameSymbolVisitor.visit_Macroc                 K   s    | j |f| | j|j d S r   )r^   rG   r6   r&   rf   r   r   r   visit_Import   s    zFrameSymbolVisitor.visit_Importc                 K   sF   | j |f| |jD ],}t|tr4| j|d  q| j| qd S )Nr   )r^   names
isinstancetuplerG   r6   )r   r   r    r!   r   r   r   visit_FromImport   s
    

z#FrameSymbolVisitor.visit_FromImportc                 K   s$   | j |jf| | j |jf| dS )z'Visit assignments in the correct order.N)r   r   r&   rf   r   r   r   visit_Assign   s    zFrameSymbolVisitor.visit_Assignc                 K   s   | j |jf| dS )zqVisiting stops at for blocks.  However the block sequence
        is visited as part of the outer scope.
        N)r   iterrf   r   r   r   rY     s    zFrameSymbolVisitor.visit_Forc                 K   s   | j |jf| d S r   )r   rO   rf   r   r   r   rQ   	  s    z"FrameSymbolVisitor.visit_CallBlockc                 K   s   | j |jf| d S r   )r   filterrf   r   r   r   ra     s    z$FrameSymbolVisitor.visit_FilterBlockc                 K   s   |j D ]}| | qd S r   )valuesr   )r   r   r    r&   r   r   r   r[     s    
zFrameSymbolVisitor.visit_Withc                 K   s   | j |jf| dS )zStop visiting at block assigns.N)r   r&   rf   r   r   r   rN     s    z$FrameSymbolVisitor.visit_AssignBlockc                 K   s   dS )zStop visiting at scopes.Nr   rf   r   r   r   rb     s    zFrameSymbolVisitor.visit_Scopec                 K   s   dS )zStop visiting at blocks.Nr   rf   r   r   r   r_     s    zFrameSymbolVisitor.visit_Blockc                 K   s   dS )z!Do not visit into overlay scopes.Nr   rf   r   r   r   rR     s    z%FrameSymbolVisitor.visit_OverlayScopeN)F)rB   rC   rD   __doc__r   re   rg   rc   r`   rj   rn   ro   rY   rQ   ra   r[   rN   rb   r_   rR   r   r   r   r   r
      s"   
	r
   )N)N)Zjinja2.visitorr   Zjinja2._compatr   r7   r9   r4   r5   r   r   r,   r	   r   r
   r   r   r   r   <module>   s   

~4