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Edit: parser.cpython-39.opt-1.pyc
a �`L� � @ s� d Z ddlmZ ddlmZ ddlmZ ddlmZ ddlm Z ddlm Z e g d��Z e g d ��Z ejejejejejejd �ZG d d � d e�Zd S )z8Parse tokens from the lexer into nodes for the compiler.� )�nodes)�imap)�TemplateAssertionError)�TemplateSyntaxError)�describe_token��describe_token_expr) �for�if�blockZextends�printZmacroZinclude�from�import�set�with� autoescape)�eq�ne�ltZlteq�gtZgteq)�add�sub�mul�div�floordiv�modc @ s� e Zd ZdZdidd�Zdefdd�Zdd� Zdjd d �Zdkd d �Z dld d�Z dmdd�Z dd� Z dndd�Z dd� Zdd� Zdd� Zd d � Zd d � Zd d!� Zd"d#� Zd$d%� Zd&d'� Zd(d)� Zd*d+� Zd,d-� Zd.d/� Zd0d1� Zd2d3� Z d4d5� Z dod7d8�Z dpd9d:�Z d;d<� Z d=d>� Z!d?d@� Z"dAdB� Z#dCdD� Z$dEdF� Z%dGdH� Z&dIdJ� Z'dKdL� Z(dqdMdN�Z)dOdP� Z*drdQdR�Z+dSdT� Z,dUdV� Z-dWdX� Z.dYdZ� Z/d[d\� Z0d]d^� Z1d_d`� Z2dsdadb�Z3dcdd� Z4dtdedf�Z5dgdh� Z6dS )u�Parserz�This is the central parsing class Jinja uses. It's passed to extensions and can be used to parse expressions or statements. Nc C sl || _ |�||||�| _|| _|| _d| _i | _|�� D ] }|jD ]}|j | j|< qBq8d| _ g | _ g | _ d S )NF� ) � environment� _tokenize�stream�name�filename�closed� extensionsZiter_extensions�tags�parse�_last_identifier� _tag_stack�_end_token_stack)�selfr �sourcer! r" �state� extension�tag� r/ �1/usr/lib/python3.9/site-packages/jinja2/parser.py�__init__+ s zParser.__init__c C s( |du r| j jj}|||| j| j��dS )z�Convenience method that raises `exc` with the message, passed line number or last line number as well as the current name and filename. N)r �current�linenor! r" )r* �msgr3 �excr/ r/ r0 �fail9 s z Parser.failc C s� g }|D ]}|� tt|�� q|r<d�dd� |d D ��}nd }|d u rPdg}n d| g}|r�|d ur~||v r~|�d| � n|�d| � | jr�|�d | jd � | �d �|�|� d S ) Nz or c s s | ]}d t |� V qdS )z'%s'Nr )�.0�exprr/ r/ r0 � <genexpr>G s z&Parser._fail_ut_eof.<locals>.<genexpr>���zUnexpected end of template.z Encountered unknown tag '%s'.z_You probably made a nesting mistake. Jinja is expecting this tag, but currently looking for %s.z-Jinja was looking for the following tags: %s.z4The innermost block that needs to be closed is '%s'.� )�extendr r �join�appendr( r6 )r* r! Zend_token_stackr3 ZexpectedZexprsZcurrently_looking�messager/ r/ r0 � _fail_ut_eofB s< � ������zParser._fail_ut_eofc C s | � || j|�S )z�Called if the parser encounters an unknown tag. Tries to fail with a human readable error message that could help to identify the problem. )r@ r) )r* r! r3 r/ r/ r0 �fail_unknown_tagg s zParser.fail_unknown_tagc C s* t | j�}|dur |�|� | �d||�S )z9Like fail_unknown_tag but for end of template situations.N)�listr) r> r@ )r* � end_tokensr3 �stackr/ r/ r0 �fail_eofn s zParser.fail_eofc C s, | j jjdv rdS |dur(| j j�|�S dS )z Are we at the end of a tuple?)� variable_end� block_end�rparenTNF)r r2 �type�test_any)r* �extra_end_rulesr/ r/ r0 � is_tuple_endu s zParser.is_tuple_endc C s6 | j d7 _ t�tj�}tjj|d| j |d� |S )zDReturn a new free identifier as :class:`~jinja2.nodes.InternalName`.r zfi%d�r3 )r' �object�__new__r Z InternalNameZNoder1 )r* r3 �rvr/ r/ r0 �free_identifier} s zParser.free_identifierc C s | j j}|jdkr | �d|j� | j�|j� d}z�|jtv rdt | d| j jj �� W |rb| j� � S |jdkr�| � � W |r�| j� � S |jdkr�| � � W |r�| j� � S | j �|j�}|dur�|| �W |r�| j� � S | j� � d}| �|j|j� W |�r| j� � n|�r| j� � 0 dS ) zParse a single statement.r! ztag name expectedTZparse_�call�filterNF)r r2 rI r6 r3 r( r> �value�_statement_keywords�getattr�pop�parse_call_block�parse_filter_blockr$ �getrA )r* �tokenZpop_tag�extr/ r/ r0 �parse_statement� sD � � � � �zParser.parse_statementFc C sL | j �d� | j �d� | �|�}| j jjdkr:| �|� |rHt| j � |S )aR Parse multiple statements into a list until one of the end tokens is reached. This is used to parse the body of statements as it also parses template data if appropriate. The parser checks first if the current token is a colon and skips it if there is one. Then it checks for the block end and parses until if one of the `end_tokens` is reached. Per default the active token in the stream at the end of the call is the matched end token. If this is not wanted `drop_needle` can be set to `True` and the end token is removed. �colonrG �eof)r �skip_if�expect�subparser2 rI rE �next)r* rC � drop_needle�resultr/ r/ r0 �parse_statements� s zParser.parse_statementsc C sf t | j�j}| jdd�}| j�d�r<| �� }tj|||d�S | �d�}| j ddd�}tj ||||d�S )zParse an assign statement.T)�with_namespace�assignrM N)z name:endset�rd ) rc r r3 �parse_assign_targetr` � parse_tupler ZAssign� parse_filterrf Z AssignBlock)r* r3 �targetr8 Z filter_node�bodyr/ r/ r0 � parse_set� s zParser.parse_setc C s� | j �d�j}| jdd�}| j �d� | jddd�}d}| j �d �rL| �� }| j �d �}| �d �}t| j �j d krxg }n| jd dd�}t j |||||||d�S )zParse a for loop.zname:for)�name:in)rK rp F)�name:recursive)� with_condexprrK N�name:ifrq )� name:endfor� name:elseZendfor)rt Tri rM ) r ra r3 rj rk r` �parse_expressionrf rc rT r ZFor)r* r3 rm �iter�test� recursivern �else_r/ r/ r0 � parse_for� s � zParser.parse_forc C s� t j| j�d�jd� }}| jdd�|_| �d�|_g |_ g |_ t | j�}|�d�rvt j| jj jd�}|j � |� qq�|�d�r�| jdd d �|_ q�q|S ) zParse an if construct.rs rM F�rr )� name:elifru � name:endifr} ru )r~ Tri )r ZIfr ra r3 rk rx rf rn Zelif_rz rc r2 r> )r* �nodere r[ r/ r/ r0 �parse_if� s zParser.parse_ifc C s� t jt| j�jd�}g }g }| jjjdkrr|r:| j�d� | �� }|� d� |� |� | j�d� |� | � � � q ||_ ||_ | jddd�|_|S ) NrM rG �comma�paramrh )z name:endwithTri )r ZWithrc r r3 r2 rI ra rj �set_ctxr> rv �targets�valuesrf rn )r* r r� r� rm r/ r/ r0 � parse_with� s zParser.parse_withc C sD t jt| j�jd�}t �d| �� �g|_| jddd�|_ t � |g�S )NrM r )zname:endautoescapeTri ) r ZScopedEvalContextModifierrc r r3 �Keywordrv �optionsrf rn ZScope�r* r r/ r/ r0 �parse_autoescape� s zParser.parse_autoescapec C sp t jt| j�jd�}| j�d�j|_| j�d�|_ | jj j dkrJ| � d� | j ddd�|_| j�d |j � |S ) NrM r! z name:scopedr zpBlock names in Jinja have to be valid Python identifiers and may not contain hyphens, use an underscore instead.)z name:endblockTri zname:)r ZBlockrc r r3 ra rT r! r` Zscopedr2 rI r6 rf rn r� r/ r/ r0 � parse_block s �zParser.parse_blockc C s" t jt| j�jd�}| �� |_|S )NrM )r ZExtendsrc r r3 rv �templater� r/ r/ r0 � parse_extends s zParser.parse_extendsc C sH | j j�dd�r>| j �� �d�r>t| j �jdk|_| j �� n||_|S )Nz name:withz name:without� name:contextr ) r r2 rJ �lookrx rc rT � with_context�skip)r* r �defaultr/ r/ r0 �parse_import_context s �� zParser.parse_import_contextc C sb t jt| j�jd�}| �� |_| jj�d�rP| j� � �d�rPd|_ | j� d� nd|_ | � |d�S )NrM z name:ignorez name:missingT� F) r ZIncluderc r r3 rv r� r2 rx r� Zignore_missingr� r� r� r/ r/ r0 � parse_include$ s �zParser.parse_includec C sF t jt| j�jd�}| �� |_| j�d� | jdd�j |_ | � |d�S )NrM �name:asT�� name_onlyF) r ZImportrc r r3 rv r� ra rj r! rm r� r� r/ r/ r0 � parse_import0 s zParser.parse_importc s t jt�j�jd�� ��� � _�j�d� g � _� �fdd�}� jrP�j�d� �jj j dkr�|� rfq�j dd�}|j � d �r��jd |jtd � �j�d �r��j dd�}� j�|j |j f� n� j�|j � |� s�jj j dkr�q�q>�j�d� q>t� d ��sd� _� S )NrM z name:importc sB �j jjdv r>�j �� �d�r>t�j �jdk� _�j �� dS dS )N)r Zwithoutr� r TF)r r2 rT r� rx rc r� r� r/ �r r* r/ r0 � parse_context= s � z(Parser.parse_from.<locals>.parse_contextr� r! Tr� �_z4names starting with an underline can not be imported)r5 r� r� F)r Z FromImportrc r r3 rv r� ra �namesr2 rI rj r! � startswithr6 r r` r> �hasattrr� )r* r� rm �aliasr/ r� r0 � parse_from7 s6 � zParser.parse_fromc C s� g |_ }g |_}| j�d� | jjjdkr�|r>| j�d� | jdd�}|�d� | j�d�rp|� | � � � n|r~| � d� |� |� q | j�d� d S ) N�lparenrH r� Tr� r� rh z-non-default argument follows default argument) �args�defaultsr ra r2 rI rj r� r` r> rv r6 )r* r r� r� �argr/ r/ r0 �parse_signaturea s zParser.parse_signaturec C st t jt| j�jd�}| jjjdkr.| �|� n g |_g |_ | � � |_ t |j t j �s`| �d|j� | jddd�|_|S )NrM r� z expected call)z name:endcallTri )r Z CallBlockrc r r3 r2 rI r� r� r� rv rR � isinstance�Callr6 rf rn r� r/ r/ r0 rX q s zParser.parse_call_blockc C s8 t jt| j�jd�}| jd dd�|_| jddd�|_|S )NrM T)� start_inline)zname:endfilterri ) r Z FilterBlockrc r r3 rl rS rf rn r� r/ r/ r0 rY s zParser.parse_filter_blockc C sB t jt| j�jd�}| jdd�j|_| �|� | jddd�|_ |S )NrM Tr� )z name:endmacrori ) r ZMacrorc r r3 rj r! r� rf rn r� r/ r/ r0 � parse_macro� s zParser.parse_macroc C sP t jt| j�jd�}g |_ | jjjdkrL|j r:| j�d� |j �| � � � q|S )NrM rG r� ) r �Outputrc r r3 r2 rI ra r> rv r� r/ r/ r0 � parse_print� s zParser.parse_printTc C s� |rN| j �� jdkrN| j �d�}t| j � | j �d�}tj|j|j|jd�}nL|rt| j �d�}tj |jd|jd�}n&|r�| j d|d�}n| � � }|� d� |� � s�| �d|jj�� |j� |S )a Parse an assignment target. As Jinja allows assignments to tuples, this function can parse all allowed assignment targets. Per default assignments to tuples are parsed, that can be disable however by setting `with_tuple` to `False`. If only assignments to names are wanted `name_only` can be set to `True`. The `extra_end_rules` parameter is forwarded to the tuple parsing function. If `with_namespace` is enabled, a namespace assignment may be parsed. �dotr! rM �storeT)� simplifiedrK zcan't assign to %r)r r� rI ra rc r ZNSRefrT r3 �Namerk � parse_primaryr� Z can_assignr6 � __class__�__name__�lower)r* Z with_tupler� rK rg r[ �attrrm r/ r/ r0 rj � s& � �zParser.parse_assign_targetc C s |r | � � S | �� S )z�Parse an expression. Per default all expressions are parsed, if the optional `with_condexpr` parameter is set to `False` conditional expressions are not parsed. )�parse_condexpr�parse_or)r* rr r/ r/ r0 rv � s zParser.parse_expressionc C sb | j jj}| �� }| j �d�r^| �� }| j �d�r<| �� }nd }tj||||d�}| j jj}q|S )Nrs ru rM )r r2 r3 r� r` r� r ZCondExpr)r* r3 Zexpr1Zexpr2Zexpr3r/ r/ r0 r� � s zParser.parse_condexprc C sF | j jj}| �� }| j �d�rB| �� }tj|||d�}| j jj}q|S )N�name:orrM )r r2 r3 � parse_andr` r ZOr�r* r3 �left�rightr/ r/ r0 r� � s zParser.parse_orc C sF | j jj}| �� }| j �d�rB| �� }tj|||d�}| j jj}q|S )N�name:andrM )r r2 r3 � parse_notr` r ZAndr� r/ r/ r0 r� � s zParser.parse_andc C s4 | j j�d�r,t| j �j}tj| �� |d�S | �� S )N�name:notrM ) r r2 rx rc r3 r �Notr� � parse_compare)r* r3 r/ r/ r0 r� � s zParser.parse_notc C s� | j jj}| �� }g }| j jj}|tv rJt| j � |�t� || �� �� nh| j � d�rn|�t� d| �� �� nD| j j� d�r�| j � � � d�r�| j � d� |�t� d| �� �� nq�| j jj}q|s�|S tj|||d�S )Nrp �inr� r� ZnotinrM )r r2 r3 � parse_math1rI �_compare_operatorsrc r> r ZOperandr` rx r� r� ZCompare)r* r3 r8 �ops� token_typer/ r/ r0 r� � s& � zParser.parse_comparec C s^ | j jj}| �� }| j jjdv rZt| j jj }t| j � | �� }||||d�}| j jj}q|S )N)r r rM )r r2 r3 � parse_concatrI � _math_nodesrc �r* r3 r� �clsr� r/ r/ r0 r� � s zParser.parse_math1c C s^ | j jj}| �� g}| j jjdkr<t| j � |�| �� � qt|�dkrP|d S tj ||d�S )N�tilder r rM ) r r2 r3 � parse_math2rI rc r> �lenr ZConcat)r* r3 r� r/ r/ r0 r� s zParser.parse_concatc C s^ | j jj}| �� }| j jjdv rZt| j jj }t| j � | �� }||||d�}| j jj}q|S )N)r r r r rM )r r2 r3 � parse_powrI r� rc r� r/ r/ r0 r� s zParser.parse_math2c C sR | j jj}| �� }| j jjdkrNt| j � | �� }tj|||d�}| j jj}q|S )N�powrM )r r2 r3 � parse_unaryrI rc r ZPowr� r/ r/ r0 r� s zParser.parse_powc C s� | j jj}| j jj}|dkr<t| j � tj| �d�|d�}n0|dkrdt| j � tj| �d�|d�}n| � � }| � |�}|r�| � |�}|S )Nr FrM r ) r r2 rI r3 rc r ZNegr� ZPosr� � parse_postfix�parse_filter_expr)r* Z with_filterr� r3 r r/ r/ r0 r� ) s zParser.parse_unaryc C sp | j j}|jdkrp|jdv r4tj|jdv |jd�}n0|jdv rPtjd |jd�}ntj|jd|jd�}t| j � n�|jdkr�t| j � |jg}|j}| j jjdkr�|� | j jj� t| j � q�tjd� |�|d�}n�|jd v r�t| j � tj|j|jd�}nr|jd k�r*t| j � | j d d �}| j � d � nB|jdk�r@| � � }n,|jdk�rV| �� }n| �dt|� |j� |S )Nr! )�trueZfalse�True�False)r� r� rM )Znone�None�load�string� )�integer�floatr� T)�explicit_parenthesesrH �lbracket�lbracezunexpected '%s')r r2 rI rT r �Constr3 r� rc r> r= rk ra � parse_list� parse_dictr6 r )r* r[ r �bufr3 r/ r/ r0 r� 9 s: zParser.parse_primaryc s� � j jj}|r� j}n|r"� j}n � fdd�}g }d}|rF� j �d� � �|�rRq�|�|� � � j jjdkr�d}nq�� j jj}q6|s�|r�|d S |s�� � dt � j j� � t j |d|d �S ) a� Works like `parse_expression` but if multiple expressions are delimited by a comma a :class:`~jinja2.nodes.Tuple` node is created. This method could also return a regular expression instead of a tuple if no commas where found. The default parsing mode is a full tuple. If `simplified` is `True` only names and literals are parsed. The `no_condexpr` parameter is forwarded to :meth:`parse_expression`. Because tuples do not require delimiters and may end in a bogus comma an extra hint is needed that marks the end of a tuple. For example for loops support tuples between `for` and `in`. In that case the `extra_end_rules` is set to ``['name:in']``. `explicit_parentheses` is true if the parsing was triggered by an expression in parentheses. This is used to figure out if an empty tuple is a valid expression or not. c s � j dd�S )NFr| )rv r/ �r* r/ r0 r& z s z!Parser.parse_tuple.<locals>.parseFr� Tr z Expected an expression, got '%s'r� rM ) r r2 r3 r� rv ra rL r> rI r6 r r �Tuple) r* r� rr rK r� r3 r& r� Zis_tupler/ r� r0 rk Z s6 ��zParser.parse_tuplec C sj | j �d�}g }| j jjdkrN|r.| j �d� | j jjdkr>qN|�| �� � q| j �d� tj||jd�S )Nr� �rbracketr� rM ) r ra r2 rI r> rv r �Listr3 )r* r[ �itemsr/ r/ r0 r� � s zParser.parse_listc C s� | j �d�}g }| j jjdkrt|r.| j �d� | j jjdkr>qt| �� }| j �d� | �� }|�tj|||jd�� q| j �d� tj ||jd�S )Nr� �rbracer� r^ rM ) r ra r2 rI rv r> r ZPairr3 �Dict)r* r[ r� �keyrT r/ r/ r0 r� � s zParser.parse_dictc C sB | j jj}|dks|dkr&| �|�}q |dkr>| �|�}q q>q |S )Nr� r� r� )r r2 rI �parse_subscript� parse_call�r* r r� r/ r/ r0 r� � s zParser.parse_postfixc C s\ | j jj}|dkr | �|�}q |dkr@| j jjdkr@| �|�}q |dkrX| �|�}q qXq |S )N�piper! �isr� )r r2 rI rl rT � parse_testr� r� r/ r/ r0 r� � s zParser.parse_filter_exprc C s t | j�}|jdkr�| jj}t | j� |jdkrFtj||jd|jd�S |jdkr^| �d|j� tj |j|jd�}tj ||d|jd�S |jdk�r g }| jjjdkr�|r�| j� d � |� | � � � q�| j� d� t|�d kr�|d }ntj|d|jd�}tj ||d|jd�S | �d |j� d S ) Nr� r! r� rM r� zexpected name or numberr� r� r� r r z expected subscript expression)rc r rI r2 r ZGetattrrT r3 r6 r� ZGetitemra r> �parse_subscribedr� r� )r* r r[ Z attr_tokenr� r� r/ r/ r0 r� � s0 � zParser.parse_subscriptc C s� | j jj}| j jjdkr*t| j � d g}n*| �� }| j jjdkrD|S t| j � |g}| j jjdkrn|�d � n(| j jjdvr�|�| �� � n |�d � | j jjdkr�t| j � | j jjdvr�|�| �� � q�|�d � n |�d � tj|d|i�S )Nr^ )r� r� r3 ) r r2 r3 rI rc rv r> r ZSlice)r* r3 r� r r/ r/ r0 r� � s* zParser.parse_subscribedc s� � j �d��g }g }d }}d}� �fdd�}� j jjdk�r\|r`� j �d� � j jjdkr`�q\� j jjdkr�||d u o~|d u � t� j � � �� }n�� j jjdkr�||d u � t� j � � �� }n�� j jjd k�r*� j �� jd k�r*||d u � � j jj}� j �d � � �� } |� t j || | j d �� n,||d u �oD|d u �oD| � |� � �� � d }q.� j �d� |d u �r~||||fS t j |||||�j d �S )Nr� Fc s | s� � d�j� d S )Nz+invalid syntax for function call expression)r6 r3 )r8 �r* r[ r/ r0 �ensure s z!Parser.parse_call.<locals>.ensurerH r� r r� r! rh r� rM T)r ra r2 rI rc rv r� rT r� r> r r� r3 r� ) r* r r� �kwargs�dyn_args� dyn_kwargsZ require_commar� r� rT r/ r� r0 r� sF �� zParser.parse_callc C s� | j jjdks|r�|s t| j � | j �d�}|j}| j jjdkrbt| j � |d| j �d�j 7 }q2| j jjdkr�| �d �\}}}}ng }g }d }}tj|||||||j d�}d}q |S )Nr� r! r� �.r� rM F) r r2 rI rc ra rT r� r ZFilterr3 ) r* r r� r[ r! r� r� r� r� r/ r/ r0 rl < s$ �zParser.parse_filterc C s" t | j�}| jj�d�r(t | j� d}nd}| j�d�j}| jjjdkrjt | j� |d| j�d�j 7 }q:d }}g }| jjjdkr�| �d �\}}}}nV| jjjdv r�| jj�d d d �s�| jj�d �r�| � d � | � � } | � | �} | g}ng }t j |||||||jd�}|�r t j||jd�}|S )Nr� TFr! r� r� r� )r! r� r� r� r� r� r� ru r� r� zname:isz'You cannot chain multiple tests with isrM )rc r r2 rx ra rT rI r� rJ r6 r� r� r ZTestr3 r� ) r* r r[ Znegatedr! r� r� r� r� Zarg_noder/ r/ r0 r� Q s8 � �zParser.parse_testc sl g � g ��j }|d ur"| j� |� � �fdd�}�z | j�r4| jj}|jdkrv|jrj|tj|j|jd�� t | j� q4|jdkr�t | j� || j dd�� | j� d� q4|jd k�r*|� t | j� |d ur�| jjj |� r� W |d ur�| j� � S | �� }t|t��r� �|� n � � |� | j� d � q4td ��q4|� W |d u�rh| j� � n|d u�rf| j� � 0 � S ) Nc s8 �r4�d j } � �tj�d d � | d�� �d d �= d S )Nr rM )r3 r> r r� rM �rn Z data_bufferr/ r0 � flush_data s z#Parser.subparse.<locals>.flush_data�datarM Zvariable_beginTr| rF Z block_beginrG zinternal parsing error)r> r) r r2 rI rT r Z TemplateDatar3 rc rk ra rJ rW r] r� rB r< �AssertionError)r* rC Zadd_datar� r[ rP r/ r� r0 rb w sN � � � zParser.subparsec C s" t j| �� dd�}|�| j� |S )z0Parse the whole template into a `Template` node.r rM )r ZTemplaterb Zset_environmentr )r* re r/ r/ r0 r& � s z Parser.parse)NNN)N)NN)N)N)F)TFNF)T)T)FTNF)F)N)7r� � __module__� __qualname__�__doc__r1 r r6 r@ rA rE rL rQ r] rf ro r{ r� r� r� r� r� r� r� r� r� r� rX rY r� r� rj rv r� r� r� r� r� r� r� r� r� r� r� rk r� r� r� r� r� r� r� rl r� rb r& r/ r/ r/ r0 r & sv % * � % # � A 0 & 0r N)r� r� r Z_compatr � exceptionsr r Zlexerr r � frozensetrU r� ZAddZSubZMulZDivZFloorDivZModr� rN r r/ r/ r/ r0 �<module> s$ � �