B
    Ç S]c  ã               @   sP   d Z ddlZddddddd	d
dddœ
Zdd„ Zdd„ Zdd„ ZedkrLeƒ  dS )z<Safely evaluate Python string literals without using eval().é    NúúúÚ
úú	úú'ú"ú\)
ÚaÚbÚfÚnÚrÚtÚvr	   r
   r   c             C   sÐ   |   dd¡\}}| d¡st‚t |¡}|d k	r4|S | d¡r–|dd … }t|ƒdk rbtd| ƒ‚yt|dƒ}W qÈ tk
r’   td| ƒd ‚Y qÈX n2yt|dƒ}W n" tk
rÆ   td	| ƒd ‚Y nX t|ƒS )
Nr   é   r   Úxé   z!invalid hex string escape ('\%s')é   é   z#invalid octal string escape ('\%s'))	ÚgroupÚ
startswithÚAssertionErrorÚsimple_escapesÚgetÚlenÚ
ValueErrorÚintÚchr)ÚmÚallÚtailZescZhexesÚi© r%   ú'lib/python3.7/lib2to3/pgen2/literals.pyÚescape   s$    

r'   c             C   s¬   |   d¡s(|   d¡s(tt| d d… ƒƒ‚| d }| d d… |d krL|d }|  |¡sptt| t|ƒ d … ƒƒ‚t| ƒdt|ƒ ksˆt‚| t|ƒt|ƒ … } t dt| ¡S )Nr	   r
   r   r   é   r   z)\\(\'|\"|\\|[abfnrtv]|x.{0,2}|[0-7]{1,3}))r   r   ÚreprÚendswithr   ÚreÚsubr'   )ÚsÚqr%   r%   r&   Ú
evalString(   s    ($r/   c              C   sD   x>t dƒD ]2} t| ƒ}t|ƒ}t|ƒ}||kr
t| |||ƒ q
W d S )Né   )Úranger    r)   r/   Úprint)r$   Úcr-   Úer%   r%   r&   Útest2   s    r5   Ú__main__)Ú__doc__r+   r   r'   r/   r5   Ú__name__r%   r%   r%   r&   Ú<module>   s    
	