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| | �S ) Nzbegin of commentzend of commentr" zbegin of statement blockzend of statement blockzbegin of print statementzend of print statementzbegin of line statementzend of line statementztemplate data / textzend of template)�reverse_operators�TOKEN_COMMENT_BEGIN�TOKEN_COMMENT_END�
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TOKEN_DATA� TOKEN_EOF�get)rH r: r: r> �_describe_token_type� s rX �Token)�tokenrI c C s | j tkr| jS t| j �S )z#Returns a description of the token.)�type�
TOKEN_NAME�valuerX )rZ r: r: r> �describe_token� s
r^ )�exprrI c C s2 d| kr&| � dd�\}}|tkr*|S n| }t|�S )z0Like `describe_token` but for token expressions.r6 r )�splitr\ rX )r_ r[ r] r: r: r> �describe_token_expr� s ra )r] rI c C s t t�| ��S )zsCount the number of newline characters in the string. This is
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newline_re�findall)r] r: r: r> �count_newlines� s rd r )� environmentrI c C s� t j}t| j�t|| j�ft| j�t|| j�ft| j�t|| j�fg}| j dk rp|�
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d|| j � f� dd� t|dd�D �S )zACompiles all the rules from the environment into a list of rules.Nz ^[ \t\v]*z(?:^|(?<=\S))[^\S\r\n]*c S s g | ]}|d d� �qS )r Nr: )r; rB r: r: r> �
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rr c @ s> e Zd ZdZefeeje dd�dd�Ze edd�dd �Z
dS )
�FailurezjClass that raises a `TemplateSyntaxError` if called.
Used by the `Lexer` to specify known errors.
N)�message�clsrI c C s || _ || _d S )N)rt � error_class)�selfrt ru r: r: r> �__init__ s zFailure.__init__z te.NoReturn)�lineno�filenamerI c C s | � | j||��d S )N)rv rt )rw ry rz r: r: r> �__call__ s zFailure.__call__) �__name__�
__module__� __qualname__�__doc__r �str�t�Typerx �intr{ r: r: r: r> rs � s rs c @ sT e Zd ZU eed< eed< eed< ed�dd�Zeed�dd �Zeed
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S )rY ry r[ r] )rI c C s t | �S )N)r^ )rw r: r: r> �__str__ s z
Token.__str__)r_ rI c C s2 | j |krdS d|kr.|�dd�| j | jgkS dS )z�Test a token against a token expression. This can either be a
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z
Token.test)�iterablerI c s t � fdd�|D ��S )z(Test against multiple token expressions.c 3 s | ]}� � |�V qd S )N)r� )r; r_ )rw r: r> rC $ s z!Token.test_any.<locals>.<genexpr>)�any)rw r� r: )rw r> �test_any" s zToken.test_anyN)
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c @ s< e Zd ZdZddd�dd�Zd d�dd �Zed�d
d �ZdS ) �TokenStreamIteratorz`The iterator for tokenstreams. Iterate over the stream
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|| _ d S )N)r� )rw r� r: r: r> rx , s z TokenStreamIterator.__init__)rI c C s | S )Nr: )rw r: r: r> �__iter__/ s z TokenStreamIterator.__iter__c C s. | j j}|jtkr | j �� t�t| j � |S )N)r� �currentr[ rV �close�
StopIteration�next)rw rZ r: r: r> �__next__2 s
z TokenStreamIterator.__next__)r| r} r~ r rx r� rY r� r: r: r: r> r� ' s r� c @ s� e Zd ZdZeje eje eje d�dd�Z e
d�dd�Z e d�dd �Z
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�dd�Zed�dd�Zd!ed d�dd�Zeeje d�dd�Zee d�dd�Zed�dd �Zd d�d d �Zeed�d d �Zd S )"r� z�A token stream is an iterable that yields :class:`Token`\s. The
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one token ahead. The current active token is stored as :attr:`current`.
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| � d S )NFr � ) �iter�_iterr �_pushedr rz �closedrY �
TOKEN_INITIALr� r� )rw r� r rz r: r: r> rx C s
zTokenStream.__init__)rI c C s t | �S )N)r� )rw r: r: r> r� Q s zTokenStream.__iter__c C s t | j�p| jjtk S )N)r� r� r� r[ rV )rw r: r: r> �__bool__T s zTokenStream.__bool__c C s | S )z Are we at the end of the stream?r: )rw r: r: r> �eosW s zTokenStream.eosN)rZ rI c C s | j �|� dS )z Push a token back to the stream.N)r� rl )rw rZ r: r: r> �push\ s zTokenStream.pushc C s" t | �}| j}| �|� || _|S )zLook at the next token.)r� r� r� )rw Z old_token�resultr: r: r> �look` s
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W dS )zGot n tokens ahead.N)�ranger� )rw r� �_r: r: r> �skiph s zTokenStream.skip)r_ rI c C s | j �|�rt| �S dS )zqPerform the token test and return the token if it matched.
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rR | �� Y nX |S )z|Go one token ahead and return the old one.
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zTokenStream.closec C sn | j �|�sft|�}| j jtkr>td|�d�| j j| j| j��td|�dt | j ���| j j| j| j��t
| �S )z}Expect a given token type and return it. This accepts the same
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Class that implements a lexer for a given environment. Automatically
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k�r0dS t!d || �d!|� �|||��q�W dS )"a This method tokenizes the text and returns the tokens in a
generator. Use this method if you just want to tokenize a template.
.. versionchanged:: 3.0
Only ``\n``, ``\r\n`` and ``\r`` are treated as line
breaks.
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TOKEN_LTEQZ TOKEN_MODZ TOKEN_MULZTOKEN_NEZ
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