£Á°èZ¨Ä…–K§‚«“ô4“ÒÙ´dîfUÙÃÅ WKbyÊ¦•êŽ…È®FÒ¿ÊÎóCozá¬S@6{Í:›œêZÌ:Š•_%:¢¾¾~;‘Ã~èŠ©ÊÇí`ÔÑ©úë™µ'5I¿fš×WO%ø9¾«¾DK|€ùÍD”Ýs]nHÕ¶ê×Ó¼ãžªéUWŸÈË%DÒÕ¬ï‘]/Åcx  ‰ï2ß]ä6G[]S£ÔÏ¯rs{úëóµmÒï#UQxo·õÞCe]"±/aÙ&Eã4ú9Jé_ÞåëdãöKë)AÞ                  ¯¹ægƒÛowÐø^d™ý½ßB7áyMä9ÜÖUã
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     f5                 @   sd   d dl mZmZmZ G dd dejZG dd deZG dd deZG dd	 d	eZ	dddZ
dS )   )grammartokentokenizec               @   s   e Zd ZdS )PgenGrammarN)__name__
__module____qualname__ r	   r	   7/opt/alt/python37/lib64/python3.7/lib2to3/pgen2/pgen.pyr      s   r   c               @   s   e Zd Zd&ddZdd Zdd Zdd	 Zd
d Zdd Zdd Z	dd Z
dd Zdd Zdd Zdd Zdd Zdd Zdd Zd'd d!Zd"d# Zd$d% ZdS )(ParserGeneratorNc             C   sl   d }|d krt |}|j}|| _|| _t|j| _|   | 	 \| _
| _|d k	rZ|  i | _|   d S )N)openclosefilenamestreamr   generate_tokensreadline	generatorgettokenparsedfasstartsymbolfirstaddfirstsets)selfr   r   Zclose_streamr	   r	   r
   __init__   s    zParserGenerator.__init__c          	   C   s*  t  }t| j }|  || j |d| j x.|D ]&}dt|j	 }||j	|< ||j
|< q<W x|D ]}| j| }g }xl|D ]d}g }x6t|j D ]$\}	}
|| ||	||
f qW |jr|d||f || qW |j| || ||f|j|j	| < qlW |j	| j |_|S )N       )r   listr   keyssortremover   insertlensymbol2numberZnumber2symbolsortedarcsitemsappend
make_labelindexisfinalstates
make_firststart)r   cnamesnameidfar+   stater%   labelnextr	   r	   r
   make_grammar   s.    




  zParserGenerator.make_grammarc             C   s8   | j | }i }x$t|D ]}| ||}d||< qW |S )Nr   )r   r$   r(   )r   r.   r0   Zrawfirstr   r4   ilabelr	   r	   r
   r,   4   s    
zParserGenerator.make_firstc             C   s&  t |j}|d  r||jkrZ||jkr4|j| S |j|j| d f ||j|< |S n>tt|d }||jkrz|j| S |j|d f ||j|< |S nt	|}|d  r||j
kr|j
| S |jtj|f ||j
|< |S n>tj| }||jkr|j| S |j|d f ||j|< |S d S )Nr   )r"   labelsisalphar#   Zsymbol2labelr'   getattrr   tokensevalkeywordsNAMEr   Zopmap)r   r.   r4   r7   Zitokenvaluer	   r	   r
   r(   =   s6    













zParserGenerator.make_labelc             C   s<   t | j }|  x |D ]}|| jkr| | qW d S )N)r   r   r   r   r   	calcfirst)r   r/   r0   r	   r	   r
   r   k   s
    

zParserGenerator.addfirstsetsc          	   C   s
  | j | }d | j|< |d }i }i }x|j D ]x\}}|| j kr|| jkrl| j| }|d krtd| n| | | j| }|| |||< q0d||< |di||< q0W i }	xJ| D ]>\}}
x4|
D ],}||	krtd||||	| f ||	|< qW qW || j|< d S )Nr   zrecursion for rule %rr   zArule %s is ambiguous; %s is in the first sets of %s as well as %s)r   r   r%   r&   
ValueErrorr@   update)r   r0   r2   r3   ZtotalsetZoverlapcheckr4   r5   fsetZinverseZitsfirstZsymbolr	   r	   r
   r@   s   s2    









zParserGenerator.calcfirstc       	      C   s   i }d }x| j tjkrx| j tjkr.|   qW | tj}| tjd |  \}}| tj | 	||}t
|}| | t
|}|||< |d kr
|}q
W ||fS )N:)typer   	ENDMARKERNEWLINEr   expectr>   OP	parse_rhsmake_dfar"   simplify_dfa)	r   r   r   r0   azr2   ZoldlenZnewlenr	   r	   r
   r      s"    
zParserGenerator.parsec          	      s    fdd} fdd t |||g}x|D ]}i }x<|jD ]2}x,|jD ]"\}}	|d k	rJ |	||i  qJW q>W xRt| D ]B\}}
x,|D ]}|j|
krP qW t |
|}|| ||| qW q.W |S )Nc                s   i } | | |S )Nr	   )r3   base)
addclosurer	   r
   closure   s    
z)ParserGenerator.make_dfa.<locals>.closurec                s>   | |krd S d|| < x$| j D ]\}}|d kr || qW d S )Nr   )r%   )r3   rO   r4   r5   )rP   r	   r
   rP      s    z,ParserGenerator.make_dfa.<locals>.addclosure)DFAStatenfasetr%   
setdefaultr$   r&   r'   addarc)r   r-   finishrQ   r+   r3   r%   Znfastater4   r5   rS   str	   )rP   r
   rK      s"    




zParserGenerator.make_dfac       
      C   s   t d| |g}xt|D ]\}}t d|||kr4dp6d x^|jD ]T\}}||kr^||}	nt|}	|| |d krt d|	  qBt d||	f  qBW qW d S )NzDump of NFA forz  Statez(final) z	    -> %dz    %s -> %d)print	enumerater%   r)   r"   r'   )
r   r0   r-   rV   Ztodor1   r3   r4   r5   jr	   r	   r
   dump_nfa   s    

zParserGenerator.dump_nfac             C   sl   t d| x\t|D ]P\}}t d||jr,dp.d x0t|j D ]\}}t d|||f  qBW qW d S )NzDump of DFA forz  Statez(final)rX   z    %s -> %d)rY   rZ   r*   r$   r%   r&   r)   )r   r0   r2   r1   r3   r4   r5   r	   r	   r
   dump_dfa   s
    
zParserGenerator.dump_dfac             C   s~   d}xt|rxd}xft |D ]Z\}}xPt|d t|D ]:}|| }||kr4||= x|D ]}||| qTW d}P q4W qW qW d S )NTFr   )rZ   ranger"   
unifystate)r   r2   Zchangesr1   Zstate_ir[   Zstate_jr3   r	   r	   r
   rL      s    
zParserGenerator.simplify_dfac             C   s   |   \}}| jdkr||fS t }t }|| || x6| jdkrt|   |   \}}|| || q@W ||fS d S )N|)	parse_altr?   NFAStaterU   r   )r   rM   rN   ZaaZzzr	   r	   r
   rJ      s    



zParserGenerator.parse_rhsc             C   sP   |   \}}x:| jdks*| jtjtjfkrF|   \}}|| |}qW ||fS )N)([)
parse_itemr?   rE   r   r>   STRINGrU   )r   rM   br.   dr	   r	   r
   ra   
  s    
zParserGenerator.parse_altc             C   s   | j dkr>|   |  \}}| tjd || ||fS |  \}}| j }|dkr`||fS |   || |dkr||fS ||fS d S )Nrd   ])+*rj   )r?   r   rJ   rH   r   rI   rU   
parse_atom)r   rM   rN   r?   r	   r	   r
   re     s    


zParserGenerator.parse_itemc             C   s   | j dkr4|   |  \}}| tjd ||fS | jtjtjfkrpt	 }t	 }|
|| j  |   ||fS | d| j| j  d S )Nrc   )z+expected (...) or NAME or STRING, got %s/%s)r?   r   rJ   rH   r   rI   rE   r>   rf   rb   rU   raise_error)r   rM   rN   r	   r	   r
   rl   (  s    
zParserGenerator.parse_atomc             C   sD   | j |ks|d k	r2| j|kr2| d||| j | j | j}|   |S )Nzexpected %s/%s, got %s/%s)rE   r?   rn   r   )r   rE   r?   r	   r	   r
   rH   9  s    zParserGenerator.expectc             C   sJ   t | j}x"|d tjtjfkr,t | j}qW |\| _| _| _| _| _	d S )Nr   )
r5   r   r   COMMENTNLrE   r?   Zbeginendline)r   tupr	   r	   r
   r   A  s    
zParserGenerator.gettokenc          
   G   s^   |r8y|| }W n&   d |gttt| }Y nX t|| j| jd | jd | jfd S )N r   r   )joinr   mapstrSyntaxErrorr   rq   rr   )r   msgargsr	   r	   r
   rn   H  s     zParserGenerator.raise_error)N)N)r   r   r   r   r6   r,   r(   r   r@   r   rK   r\   r]   rL   rJ   ra   re   rl   rH   r   rn   r	   r	   r	   r
   r   
   s$   
	.$

r   c               @   s   e Zd Zdd ZdddZdS )rb   c             C   s
   g | _ d S )N)r%   )r   r	   r	   r
   r   S  s    zNFAState.__init__Nc             C   s   | j ||f d S )N)r%   r'   )r   r5   r4   r	   r	   r
   rU   V  s    zNFAState.addarc)N)r   r   r   r   rU   r	   r	   r	   r
   rb   Q  s   rb   c               @   s0   e Zd Zdd Zdd Zdd Zdd Zd	Zd	S )
rR   c             C   s   || _ ||k| _i | _d S )N)rS   r*   r%   )r   rS   finalr	   r	   r
   r   ]  s    
zDFAState.__init__c             C   s   || j |< d S )N)r%   )r   r5   r4   r	   r	   r
   rU   e  s    zDFAState.addarcc             C   s.   x(| j  D ]\}}||kr|| j |< qW d S )N)r%   r&   )r   oldnewr4   r5   r	   r	   r
   r_   k  s    zDFAState.unifystatec             C   sX   | j |j krdS t| jt|jkr(dS x*| j D ]\}}||j|k	r4dS q4W dS )NFT)r*   r"   r%   r&   get)r   otherr4   r5   r	   r	   r
   __eq__p  s    zDFAState.__eq__N)r   r   r   r   rU   r_   r   __hash__r	   r	   r	   r
   rR   [  s
   rR   Grammar.txtc             C   s   t | }| S )N)r   r6   )r   pr	   r	   r
   generate_grammar  s    r   N)r   )rX   r   r   r   ZGrammarr   objectr   rb   rR   r   r	   r	   r	   r
   <module>   s     I
%