B
    Y#                 @   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paramZresolvealiasZ	undefinedNc             C   s.   t |d}t|}x| D ]}|| qW |S )N)parent)SymbolsFrameSymbolVisitorvisit)nodesparent_symbolssymvisitornode r   0lib/python3.7/site-packages/jinja2/idtracking.pyfind_symbols   s
    

r   c             C   s   t |d}||  |S )N)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loadZ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 )N)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 )N)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 )N)	object__new__	__class____dict__updater   copyr   r   )r   r%   r   r   r   r,   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 )N)r   )r   r-   r    VAR_LOAD_PARAMETER)r   r   r   r   r   declare_parameter_   s    zSymbols.declare_parameterc             C   s(   |  |}|d kr$| j|t|fd d S )N)r   )r#   r    VAR_LOAD_RESOLVE)r   r   r"   r   r   r   r   c   s    
zSymbols.loadc       	      C   s   i }x<|D ]4}x.|j D ]$}|| j kr&q||dd ||< qW q
W x6|D ].}| j|j | j|j | j |j  qHW xxt|D ]l\}}|t|krq| |}|d k	std| j	d k	r| j	|}|d k	rt
|f| j|< qt|f| j|< qW d S )Nr   r   zshould not happen)r   getr   r+   r   r   lenr#   r$   r   r.   r3   )	r   Zbranch_symbolsr   branchr"   r   r   Zbranch_countZouter_targetr   r   r   branch_updateh   s*    




zSymbols.branch_updatec             C   sF   i }| }x8|d k	r@x$|j D ]}||kr| |||< qW |j}q
W |S )N)r   r#   r   )r   r%   r   r   r   r   r   dump_stores   s    

zSymbols.dump_storesc             C   sP   t  }| }x@|d k	rJx,t| jD ]\}\}}|tkr || q W |j}qW |S )N)r   r   r   r1   r-   r   )r   r%   r   r"   Zinstr_r   r   r   dump_param_targets   s    

zSymbols.dump_param_targets)NN)N)__name__
__module____qualname__r   r   r    r!   r#   r&   r,   r0   r2   r   r7   r8   r:   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 )N)r   sym_visitor)r   symbolsr   r   r   r      s    zRootVisitor.__init__c             K   s"   x|  D ]}| j| q
W d S )N)iter_child_nodesr>   r	   )r   r   r   childr   r   r   _simple_visit   s    zRootVisitor._simple_visitc             K   s    x|j D ]}| j| qW d S )N)bodyr>   r	   )r   r   r   rA   r   r   r   visit_AssignBlock   s    zRootVisitor.visit_AssignBlockc             K   s&   x |j ddD ]}| j| qW d S )N)call)Zexclude)r@   r>   r	   )r   r   r   rA   r   r   r   visit_CallBlock   s    zRootVisitor.visit_CallBlockc             K   s    x|j D ]}| j| qW d S )N)rC   r>   r	   )r   r   r   rA   r   r   r   visit_OverlayScope   s    zRootVisitor.visit_OverlayScoperC   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x|pxdD ]}| j | qzW d S )NrC   T)store_as_paramelsetestzUnknown for branchr   )r>   r	   r"   rC   else_rJ   RuntimeError)r   r   Z
for_branchr   r6   itemr   r   r   	visit_For   s    
zRootVisitor.visit_Forc             K   s<   x|j D ]}| j| qW x|jD ]}| j| q$W d S )N)Ztargetsr>   r	   rC   )r   r   r   r"   rA   r   r   r   
visit_With   s    zRootVisitor.visit_Withc             O   s   t d|jj d S )NzCannot find symbols for %r)NotImplementedErrorr)   r;   )r   r   argsr   r   r   r   generic_visit   s    zRootVisitor.generic_visitN)rC   )r;   r<   r=   r   rB   Zvisit_Templatevisit_Blockvisit_Macrovisit_FilterBlockvisit_Scopevisit_IfZvisit_ScopedEvalContextModifierrD   rF   rG   rN   rO   rR   r   r   r   r   r      s   
r   c               @   s   e Zd ZdZdd Zd$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 )N)r?   )r   r?   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   r0   r   N)Zctxr?   r2   r   r0   r   )r   r   rH   r   r   r   r   
visit_Name   s    

zFrameSymbolVisitor.visit_Namec             K   s   | j |j d S )N)r?   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                s4      _}x| D ]}j|f  qW _|S )N)r,   r?   r	   )r
   r%   Zsubnode)r   original_symbolsr   r   r   inner_visit   s
    
z0FrameSymbolVisitor.visit_If.<locals>.inner_visitr   )r	   rJ   r?   rC   Zelif_rK   r7   )r   r   r   r[   Zbody_symbolsZelif_symbolsZelse_symbolsr   )r   rZ   r   r   rW      s    

zFrameSymbolVisitor.visit_Ifc             K   s   | j |j d S )N)r?   r0   r   )r   r   r   r   r   r   rT      s    zFrameSymbolVisitor.visit_Macroc             K   s    | j |f| | j|j d S )N)rR   r?   r0   r"   )r   r   r   r   r   r   visit_Import   s    zFrameSymbolVisitor.visit_Importc             K   sJ   | j |f| x6|jD ],}t|tr6| j|d  q| j| qW d S )Nr   )rR   names
isinstancetupler?   r0   )r   r   r   r   r   r   r   visit_FromImport   s
    
z#FrameSymbolVisitor.visit_FromImportc             K   s$   | j |jf| | j |jf| dS )z'Visit assignments in the correct order.N)r	   r   r"   )r   r   r   r   r   r   visit_Assign   s    zFrameSymbolVisitor.visit_Assignc             K   s   | j |jf| dS )zqVisiting stops at for blocks.  However the block sequence
        is visited as part of the outer scope.
        N)r	   iter)r   r   r   r   r   r   rN     s    zFrameSymbolVisitor.visit_Forc             K   s   | j |jf| d S )N)r	   rE   )r   r   r   r   r   r   rF   	  s    z"FrameSymbolVisitor.visit_CallBlockc             K   s   | j |jf| d S )N)r	   filter)r   r   r   r   r   r   rU     s    z$FrameSymbolVisitor.visit_FilterBlockc             K   s   x|j D ]}| | qW d S )N)valuesr	   )r   r   r   r"   r   r   r   rO     s    zFrameSymbolVisitor.visit_Withc             K   s   | j |jf| dS )zStop visiting at block assigns.N)r	   r"   )r   r   r   r   r   r   rD     s    z$FrameSymbolVisitor.visit_AssignBlockc             K   s   dS )zStop visiting at scopes.Nr   )r   r   r   r   r   r   rV     s    zFrameSymbolVisitor.visit_Scopec             K   s   dS )zStop visiting at blocks.Nr   )r   r   r   r   r   r   rS     s    zFrameSymbolVisitor.visit_Blockc             K   s   dS )z!Do not visit into overlay scopes.Nr   )r   r   r   r   r   r   rG     s    z%FrameSymbolVisitor.visit_OverlayScopeN)F)r;   r<   r=   __doc__r   rX   rY   rW   rT   r\   r`   ra   rN   rF   rU   rO   rD   rV   rS   rG   r   r   r   r   r      s"   
	r   )N)N)Zjinja2.visitorr   Zjinja2._compatr   r1   r3   r.   r/   r   r   r'   r   r   r   r   r   r   r   <module>   s   

~4