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    babel.messages.jslexer
    ~~~~~~~~~~~~~~~~~~~~~~

    A simple JavaScript 1.5 lexer which is used for the JavaScript
    extractor.

    :copyright: (c) 2013-2018 by the Babel Team.
    :license: BSD, see LICENSE for more details.
    )
namedtupleN)unichr+-*%z!=z==<>z<=z>==z+=z-=z*=z%=z<<z>>z>>>z<<=z>>=z>>>=&z&=|z|=z&&z||^z^=()[]{}!z--z++~,;.:T)keyreverse
	)bfnrtz[\w$_][\w\d$_]*z[\w$_][\w\d$_.]*[\w\d$_.]z/=?z%/(?:[^/\\]*(?:\\.[^/\\]*)*)/[a-zA-Z]*z(\r\n|\n|\r)z\\z[a-fA-F0-9]{1,4}Tokenztype value linenoz\s+z<!--.*Zlinecommentz//.*Zmultilinecommentz	/\*.*?\*/dotted_namenamenumberzb(
        (?:0|[1-9]\d*)
        (\.\d+)?
        ([eE][-+]?\d+)? |
        (0x[a-fA-F0-9]+)
    )Zjsx_tagz(?:</?[^>\s]+|/>)operatorz(%s)template_stringz`(?:[^`\\]*(?:\\.[^`\\]*)*)`stringzT(
        '(?:[^'\\]*(?:\\.[^'\\]*)*)'  |
        "(?:[^"\\]*(?:\\.[^"\\]*)*)"
    )c             C   sZ   g }xPt D ]H\}}| s$|r$d|kr$q
|s2|dkr2q
|dkrD|s@q
d}|||f q
W |S )ze
    Get a tokenization rule list given the passed syntax options.

    Internal to this module.
    jsxr+   r'   r(   )_rulesappend)r-   dottedr+   rules
token_typerule r4   Klib/python3.7/site-packages/Babel-2.6.0-py3.7.egg/babel/messages/jslexer.py	get_rules:   s    r6   c             C   s   | j dkr| jdkS | j dkS )zzA helper function that helps the tokenizer to decide if the current
    token may be followed by a division operator.
    r*   )r   r   r   z++z--)r(   r)   r,   regexp)typevalue)tokenr4   r4   r5   indicates_divisionN   s    

r;   c             C   sb  | r | d | d kr | d dks(t dtd| dd } g }|j}d}x| d|}|dk rbP || ||  | |d  }|tkr|t|  n|dkr&t| |d	 }|d
k	r| }t	|dkry|t
t|d W n tk
r   Y nX |d }qL|||  | }qLn|| n|| |d	 }qLW |t	| k rX|| |d
  d|S )zUnquote a string with JavaScript rules.  The string has to start with
    string delimiters (``'``, ``"`` or the back-tick/grave accent (for template strings).)
    r   z"'`z)string provided is not properly delimitedz\1   \ZuU   N          )AssertionErrorline_join_resubr/   findescapesuni_escape_rematchgrouplenr   int
ValueErrorendjoin)r,   resultaddposZ
escape_posZ	next_charZescapedZescaped_valuer4   r4   r5   unquote_stringW   sD    "


rT   c             c   s   d}d}d}t | }t|||d}x||k rx^|D ]\}	}
|
| |}|dk	r2P q2W |rjt| |}d}	nt| |}d}	|dkr|d7 }q$| }|	dk	rt|	||}t|}|V  |t t	|7 }|
 }q$W dS )z
    Tokenize JavaScript/JSX source.  Returns a generator of tokens.

    :param jsx: Enable (limited) JSX parsing.
    :param dotted: Read dotted names as single name token.
    :param template_string: Support ES6 template strings
    Fr   r=   )r-   r0   r+   Nr*   r7   )rL   r6   rJ   division_reregex_rerK   r&   r;   line_refindallrO   )sourcer-   r0   r+   Z
may_dividerS   linenorO   r1   r2   r3   rJ   Ztoken_valuer:   r4   r4   r5   tokenize   s2    
r[   )TTT) __doc__collectionsr   reZbabel._compatr   sortedrL   Z	operatorsrH   compileUNICODEZname_reZdotted_name_rerU   DOTALLrV   rW   patternrE   rI   r&   VERBOSEIrP   mapescaper.   r6   r;   rT   r[   r4   r4   r4   r5   <module>   sF   





	8