3
š(ƒhö1  ã               @   sÜ   d dl Z d dlZd dlmZ d dlmZ d dlmZ d dlm	Z	 d dl
mZ d dlmZ dd	lmZmZmZ dd
lmZ G dd„ deƒZG dd„ deƒZG dd„ deƒZG dd„ deƒZG dd„ deƒZdd„ Zdd„ ZdS )é    N)Úimport_module)Úsix)ÚRemovedInDjango20Warning)Úconditional_escape)Ú
getargspec)Úis_iterableé   )ÚNodeÚTemplateÚtoken_kwargs)ÚTemplateSyntaxErrorc               @   s   e Zd ZdS )ÚInvalidTemplateLibraryN)Ú__name__Ú
__module__Ú__qualname__© r   r   ú;/tmp/pip-install-q3hcpn_q/Django/django/template/library.pyr      s   r   c               @   sZ   e Zd ZdZdd„ Zddd„Zdd„ Zdd	d
„Zdd„ Zddd„Z	ddd„Z
ddd„ZdS )ÚLibrarya  
    A class for registering template tags and filters. Compiled filter and
    template tag functions are stored in the filters and tags attributes.
    The filter, simple_tag, and inclusion_tag methods provide a convenient
    way to register callables as tags.
    c             C   s   i | _ i | _d S )N)ÚfiltersÚtags)Úselfr   r   r   Ú__init__   s    zLibrary.__init__Nc                s~   ˆ d kr|d krˆj S ˆ d k	rL|d krLtˆ ƒr8ˆj ˆ ƒS ‡ ‡fdd„}|S n.ˆ d k	rj|d k	rj|ˆjˆ < |S tdˆ |f ƒ‚d S )Nc                s   ˆj ˆ | ƒS )N)Útag)Úfunc)Únamer   r   r   Údec(   s    zLibrary.tag.<locals>.decz.Unsupported arguments to Library.tag: (%r, %r))Útag_functionÚcallabler   Ú
ValueError)r   r   Zcompile_functionr   r   )r   r   r   r      s    

zLibrary.tagc             C   s   || j t|d|ƒj< |S )NÚ_decorated_function)r   Úgetattrr   )r   r   r   r   r   r   5   s    zLibrary.tag_functionc                sØ   ˆdkr"|dkr"‡ ‡fdd„}|S ˆdk	r^|dkr^t ˆƒrHˆjˆfˆ ŽS ‡ ‡‡fdd„}|S nvˆdk	rÄ|dk	rÄ|ˆjˆ< x@d
D ]8}|ˆ kr~ˆ | }t|||ƒ t|dƒr~t|j||ƒ q~W ˆ|_|S td	ˆ|f ƒ‚dS )z™
        Register a callable as a template filter. Example:

        @register.filter
        def lower(value):
            return value.lower()
        Nc                s   ˆj | fˆ ŽS )N)Úfilter_function)r   )Úflagsr   r   r   r   C   s    zLibrary.filter.<locals>.decc                s   ˆj ˆ| fˆ ŽS )N)Úfilter)r   )r"   r   r   r   r   r   L   s    Úexpects_localtimeÚis_safeÚneeds_autoescaper   z1Unsupported arguments to Library.filter: (%r, %r))r$   r%   r&   )r   r!   r   ÚsetattrÚhasattrr   Z_filter_namer   )r   r   Zfilter_funcr"   r   ÚattrÚvaluer   )r"   r   r   r   r#   9   s*    


zLibrary.filterc             K   s   t |d|ƒj}| j||f|ŽS )Nr   )r    r   r#   )r   r   r"   r   r   r   r   r!   c   s    zLibrary.filter_functionc                s8   ‡ ‡‡fdd„}|dkr|S t |ƒr,||ƒS tdƒ‚dS )z§
        Register a callable as a compiled template tag. Example:

        @register.simple_tag
        def hello(*args, **kwargs):
            return 'world'
        c                sT   t ˆƒ\‰‰‰‰ ˆp tˆdˆƒj‰tjˆƒ‡ ‡‡‡‡‡‡fdd„ƒ}ˆjˆ|ƒ ˆS )Nr   c          	      sj   |j ƒ dd … }d }t|ƒdkr@|d dkr@|d }|d d… }t| |ˆˆˆˆ ˆˆƒ\}}tˆˆ|||ƒS )Nr   é   Úaséþÿÿÿéÿÿÿÿr-   )Úsplit_contentsÚlenÚ
parse_bitsÚ
SimpleNode)ÚparserÚtokenÚbitsÚ
target_varÚargsÚkwargs)Údefaultsr   Úfunction_nameÚparamsÚtakes_contextÚvarargsÚvarkwr   r   Úcompile_funcs   s    z5Library.simple_tag.<locals>.dec.<locals>.compile_func)r   r    r   Ú	functoolsÚwrapsr   )r   r?   )r   r   r<   )r9   r   r:   r;   r=   r>   r   r   o   s
    "zLibrary.simple_tag.<locals>.decNz(Invalid arguments provided to simple_tag)r   r   )r   r   r<   r   r   r   )r   r   r<   r   Ú
simple_tagg   s    zLibrary.simple_tagc             C   s   t jdtdd | j|||ƒS )Nz8assignment_tag() is deprecated. Use simple_tag() insteadr+   )Ú
stacklevel)ÚwarningsÚwarnr   rB   )r   r   r<   r   r   r   r   Úassignment_tag‹   s
    zLibrary.assignment_tagc                s   ‡ ‡‡‡fdd„}|S )zß
        Register a callable as an inclusion tag:

        @register.inclusion_tag('results.html')
        def show_results(poll):
            choices = poll.choice_set.all()
            return {'choices': choices}
        c          	      sV   t ˆƒ\‰‰‰‰ ˆp tˆdˆƒj‰tjˆƒ‡ ‡‡‡‡‡	‡‡fdd„ƒ}ˆjˆ|ƒ ˆS )Nr   c          	      s:   |j ƒ dd … }t| |ˆˆˆˆ ˆˆƒ\}}tˆˆ||ˆƒS )Nr   )r/   r1   ÚInclusionNode)r3   r4   r5   r7   r8   )r9   Úfilenamer   r:   r;   r<   r=   r>   r   r   r?       s    z8Library.inclusion_tag.<locals>.dec.<locals>.compile_func)r   r    r   r@   rA   r   )r   r?   )rH   r   r   r<   )r9   r   r:   r;   r=   r>   r   r   œ   s
    $
z"Library.inclusion_tag.<locals>.decr   )r   rH   r   r<   r   r   r   )rH   r   r   r<   r   Úinclusion_tag“   s    	zLibrary.inclusion_tag)NN)NN)NNN)NNN)NNN)r   r   r   Ú__doc__r   r   r   r#   r!   rB   rF   rI   r   r   r   r   r      s   

*
$
r   c               @   s    e Zd ZdZdd„ Zdd„ ZdS )ÚTagHelperNodez¬
    Base class for tag helper nodes such as SimpleNode and InclusionNode.
    Manages the positional and keyword arguments to be passed to the decorated
    function.
    c             C   s   || _ || _|| _|| _d S )N)r   r<   r7   r8   )r   r   r<   r7   r8   r   r   r   r   µ   s    zTagHelperNode.__init__c                sD   ‡ fdd„| j D ƒ}| jr$ˆ g| }‡ fdd„| jjƒ D ƒ}||fS )Nc                s   g | ]}|j ˆ ƒ‘qS r   )Úresolve)Ú.0Úvar)Úcontextr   r   ú
<listcomp>¼   s    z8TagHelperNode.get_resolved_arguments.<locals>.<listcomp>c                s   i | ]\}}|j ˆ ƒ|“qS r   )rL   )rM   ÚkÚv)rO   r   r   ú
<dictcomp>¿   s    z8TagHelperNode.get_resolved_arguments.<locals>.<dictcomp>)r7   r<   r8   Úitems)r   rO   Úresolved_argsÚresolved_kwargsr   )rO   r   Úget_resolved_arguments»   s
    
z$TagHelperNode.get_resolved_argumentsN)r   r   r   rJ   r   rW   r   r   r   r   rK   ¯   s   rK   c                   s$   e Zd Z‡ fdd„Zdd„ Z‡  ZS )r2   c                s    t t| ƒj||||ƒ || _d S )N)Úsuperr2   r   r6   )r   r   r<   r7   r8   r6   )Ú	__class__r   r   r   Å   s    zSimpleNode.__init__c             C   sD   | j |ƒ\}}| j||Ž}| jd k	r2||| j< dS |jr@t|ƒ}|S )NÚ )rW   r   r6   Z
autoescaper   )r   rO   rU   rV   Úoutputr   r   r   ÚrenderÉ   s    

zSimpleNode.render)r   r   r   r   r\   Ú__classcell__r   r   )rY   r   r2   Ã   s   r2   c                   s$   e Zd Z‡ fdd„Zdd„ Z‡  ZS )rG   c                s    t t| ƒj||||ƒ || _d S )N)rX   rG   r   rH   )r   r   r<   r7   r8   rH   )rY   r   r   r   Ö   s    zInclusionNode.__init__c             C   sÔ   | j |ƒ\}}| j||Ž}|jj| ƒ}|dkr¦t| jtƒrB| j}nZtt| jddƒtƒr`| jj}n<t| jt	j
ƒ rŒt| jƒrŒ|jjj| jƒ}n|jjj| jƒ}||j| < |j|ƒ}|jdƒ}|dk	rÊ||d< |j|ƒS )z°
        Render the specified template and context. Cache the template object
        in render_context to avoid reparsing and loading when used in a for
        loop.
        NÚtemplateÚ
csrf_token)rW   r   Zrender_contextÚgetÚ
isinstancerH   r
   r    r^   r   Ústring_typesr   ZengineZselect_templateZget_templateÚnewr\   )r   rO   rU   rV   Ú_dictÚtZnew_contextr_   r   r   r   r\   Ú   s"    



zInclusionNode.render)r   r   r   r   r\   r]   r   r   )rY   r   rG   Ô   s   rG   c             C   sh  |r*|d dkr|dd… }nt d| ƒ‚g }i }	t|ƒ}
xâ|D ]Ú}t|g| ƒ}|r¼|jƒ \}}||kr‚|dkr‚t d||f ƒ‚n8||	krœt d||f ƒ‚n||	t|ƒ< ||
krº|
j|ƒ q@|	rÎt d| ƒ‚q@|j| j|ƒƒ y|
jdƒ W q@ t	k
r   |dkrt d	| ƒ‚Y q@X q@W |dk	r:|
dt
|ƒ … }
|
r`t d
|djdd„ |
D ƒƒf ƒ‚||	fS )z°
    Parse bits for template tag helpers simple_tag and inclusion_tag, in
    particular by detecting syntax errors and by extracting positional and
    keyword arguments.
    r   rO   r   NzW'%s' is decorated with takes_context=True so it must have a first argument of 'context'z.'%s' received unexpected keyword argument '%s'z7'%s' received multiple values for keyword argument '%s'zH'%s' received some positional argument(s) after some keyword argument(s)z+'%s' received too many positional argumentsz5'%s' did not receive value(s) for the argument(s): %sz, c             s   s   | ]}d | V  qdS )z'%s'Nr   )rM   Úpr   r   r   ú	<genexpr>8  s    zparse_bits.<locals>.<genexpr>)r   Úlistr   ÚpopitemÚstrÚremoveÚappendZcompile_filterÚpopÚ
IndexErrorr0   Újoin)r3   r5   r;   r=   r>   r9   r<   r   r7   r8   Zunhandled_paramsÚbitÚkwargÚparamr*   r   r   r   r1   ø   sV    



r1   c             C   sl   yt | ƒ}W n2 tk
r> } ztd| |f ƒ‚W Y dd}~X nX y|jS  tk
rf   td|  ƒ‚Y nX dS )z;
    Load a Library object from a template tag module.
    zSInvalid template library specified. ImportError raised when trying to load '%s': %sNz4Module  %s does not have a variable named 'register')r   ÚImportErrorr   ÚregisterÚAttributeError)r   ÚmoduleÚer   r   r   Úimport_library<  s    rx   )r@   rD   Ú	importlibr   Zdjango.utilsr   Zdjango.utils.deprecationr   Zdjango.utils.htmlr   Zdjango.utils.inspectr   Zdjango.utils.itercompatr   Úbaser	   r
   r   Ú
exceptionsr   Ú	Exceptionr   Úobjectr   rK   r2   rG   r1   rx   r   r   r   r   Ú<module>   s"    $D