a
    °¯/`ô5  ã                   @   sd   d dl mZmZmZ G dd„ dejƒZG dd„ deƒZG dd„ deƒZG dd	„ d	eƒZ	ddd„Z
dS )é   )ÚgrammarÚtokenÚtokenizec                   @   s   e Zd ZdS )ÚPgenGrammarN)Ú__name__Ú
__module__Ú__qualname__© r	   r	   ú1/root/TEST/Python-3.9.2/Lib/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$d%„ ZdS )(ÚParserGeneratorNc                 C   sl   d }|d u rt |ƒ}|j}|| _|| _t |j¡| _|  ¡  |  	¡ \| _
| _|d urZ|ƒ  i | _|  ¡  d S ©N)ÚopenÚcloseÚfilenameÚstreamr   Úgenerate_tokensÚreadlineÚ	generatorÚgettokenÚparseÚdfasÚstartsymbolÚfirstÚaddfirstsets)Úselfr   r   Zclose_streamr	   r	   r
   Ú__init__   s    zParserGenerator.__init__c              	   C   s  t ƒ }t| j ¡ ƒ}| ¡  | | j¡ | d| j¡ |D ]&}dt|j	ƒ }||j	|< ||j
|< q:|D ] }| j| }g }|D ]`}g }t|j ¡ ƒD ]$\}	}
| |  ||	¡| |
¡f¡ q’|jrÒ| d| |¡f¡ | |¡ q||j |¡ ||  ||¡f|j|j	| < qf|j	| j |_|S )Né    é   )r   Úlistr   ÚkeysÚsortÚremover   ÚinsertÚlenÚsymbol2numberÚnumber2symbolÚsortedÚarcsÚitemsÚappendÚ
make_labelÚindexÚisfinalÚstatesÚ
make_firstÚstart)r   ÚcÚnamesÚnameÚiÚdfar-   Ústater'   ÚlabelÚnextr	   r	   r
   Úmake_grammar   s.    

zParserGenerator.make_grammarc                 C   s4   | j | }i }t|ƒD ]}|  ||¡}d||< q|S ©Nr   )r   r&   r*   )r   r0   r2   Zrawfirstr   r6   Úilabelr	   r	   r
   r.   4   s    

zParserGenerator.make_firstc                 C   sb  t |jƒ}|d  ¡ r¾||jv rZ||jv r4|j| S |j |j| d f¡ ||j|< |S nbtt|d ƒ}t|t	ƒsxJ |ƒ‚|tj
v sŠJ |ƒ‚||jv rž|j| S |j |d f¡ ||j|< |S n |d dv sÒJ |ƒ‚t|ƒ}|d  ¡ r ||jv  rþ|j| S |j tj|f¡ ||j|< |S n>tj| }||jv r@|j| S |j |d f¡ ||j|< |S d S )Nr   )ú"ú')r#   ÚlabelsÚisalphar$   Úsymbol2labelr)   Úgetattrr   Ú
isinstanceÚintÚtok_nameÚtokensÚevalÚkeywordsÚNAMEr   Úopmap)r   r0   r6   r:   ZitokenÚvaluer	   r	   r
   r*   =   s<    












zParserGenerator.make_labelc                 C   s8   t | j ¡ ƒ}| ¡  |D ]}|| jvr|  |¡ qd S r   )r   r   r   r    r   Ú	calcfirst)r   r1   r2   r	   r	   r
   r   k   s
    
zParserGenerator.addfirstsetsc              	   C   sþ   | j | }d | j|< |d }i }i }|j ¡ D ]x\}}|| j v r’|| jv rj| j| }|d u r~td| ƒ‚n|  |¡ | j| }| |¡ |||< q.d||< |di||< q.i }	| ¡ D ]:\}}
|
D ],}||	v rätd||||	| f ƒ‚||	|< qÀq´|| 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(   Ú
ValueErrorrJ   Úupdate)r   r2   r4   r5   ZtotalsetZoverlapcheckr6   r7   ÚfsetZinverseÚitsfirstZsymbolr	   r	   r
   rJ   s   s4    








þzParserGenerator.calcfirstc           	      C   s    i }d }| j tjkr˜| j tjkr*|  ¡  q|  tj¡}|  tjd¡ |  ¡ \}}|  tj¡ |  	||¡}t
|ƒ}|  |¡ t
|ƒ}|||< |d u r|}q||fS )Nú:)Útyper   Ú	ENDMARKERÚNEWLINEr   ÚexpectrG   ÚOPÚ	parse_rhsÚmake_dfar#   Úsimplify_dfa)	r   r   r   r2   ÚaÚzr4   ZoldlenZnewlenr	   r	   r
   r   ‘   s"    

zParserGenerator.parsec              	      sÚ   t |tƒsJ ‚t |tƒsJ ‚‡ fdd„}‡ fdd„‰ t||ƒ|ƒg}|D ]Œ}i }|jD ].}|jD ]"\}}	|d ur`ˆ |	| |i ¡ƒ q`qVt| ¡ ƒD ]@\}}
|D ]}|j|
krž qÆqžt|
|ƒ}| |¡ | 	||¡ q’qH|S )Nc                    s   i }ˆ | |ƒ |S r   r	   )r5   Úbase©Ú
addclosurer	   r
   Úclosure°   s    
z)ParserGenerator.make_dfa.<locals>.closurec                    sH   t | tƒsJ ‚| |v rd S d|| < | jD ]\}}|d u r(ˆ ||ƒ q(d S r9   )rA   ÚNFAStater'   )r5   rZ   r6   r7   r[   r	   r
   r\   ´   s    z,ParserGenerator.make_dfa.<locals>.addclosure)
rA   r^   ÚDFAStateÚnfasetr'   Ú
setdefaultr&   r(   r)   Úaddarc)r   r/   Úfinishr]   r-   r5   r'   Znfastater6   r7   r`   Ústr	   r[   r
   rV   ©   s&    



zParserGenerator.make_dfac           
      C   sš   t d|ƒ |g}t|ƒD ]|\}}t d|||u r2dp4dƒ |jD ]T\}}||v rZ| |¡}	nt|ƒ}	| |¡ |d u r‚t d|	 ƒ q>t d||	f ƒ q>qd S )NzDump of NFA forú  Stateú(final)Ú z	    -> %dú    %s -> %d)ÚprintÚ	enumerater'   r+   r#   r)   )
r   r2   r/   rc   Ztodor3   r5   r6   r7   Újr	   r	   r
   Údump_nfaÍ   s    

zParserGenerator.dump_nfac                 C   sd   t d|ƒ t|ƒD ]L\}}t d||jr*dp,dƒ t|j ¡ ƒD ]\}}t d|| |¡f ƒ q>qd S )NzDump of DFA forre   rf   rg   rh   )ri   rj   r,   r&   r'   r(   r+   )r   r2   r4   r3   r5   r6   r7   r	   r	   r
   Údump_dfaÝ   s
    
zParserGenerator.dump_dfac                 C   sp   d}|rld}t |ƒD ]T\}}t|d t|ƒƒD ]8}|| }||kr.||= |D ]}| ||¡ qLd} qq.qqd S )NTFr   )rj   Úranger#   Ú
unifystate)r   r4   Zchangesr3   Zstate_irk   Zstate_jr5   r	   r	   r
   rW   ä   s    zParserGenerator.simplify_dfac                 C   s~   |   ¡ \}}| jdkr||fS tƒ }tƒ }| |¡ | |¡ | jdkrr|  ¡  |   ¡ \}}| |¡ | |¡ q>||fS d S )Nú|)Ú	parse_altrI   r^   rb   r   )r   rX   rY   ZaaZzzr	   r	   r
   rU   ù   s    




zParserGenerator.parse_rhsc                 C   sL   |   ¡ \}}| jdv s(| jtjtjfv rD|   ¡ \}}| |¡ |}q||fS )N)ú(ú[)Ú
parse_itemrI   rP   r   rG   ÚSTRINGrb   )r   rX   Úbr0   Údr	   r	   r
   rq   
  s    
ÿ
zParserGenerator.parse_altc                 C   sŽ   | j dkr>|  ¡  |  ¡ \}}|  tjd¡ | |¡ ||fS |  ¡ \}}| j }|dvr`||fS |  ¡  | |¡ |dkr‚||fS ||fS d S )Nrs   ú])ú+Ú*ry   )rI   r   rU   rS   r   rT   rb   Ú
parse_atom)r   rX   rY   rI   r	   r	   r
   rt     s    


zParserGenerator.parse_itemc                 C   s†   | j dkr4|  ¡  |  ¡ \}}|  tjd¡ ||fS | jtjtjfv rpt	ƒ }t	ƒ }| 
|| j ¡ |  ¡  ||fS |  d| j| j ¡ d S )Nrr   ú)z+expected (...) or NAME or STRING, got %s/%s)rI   r   rU   rS   r   rT   rP   rG   ru   r^   rb   Úraise_error)r   rX   rY   r	   r	   r
   r{   (  s    
ÿzParserGenerator.parse_atomc                 C   sD   | j |ks|d ur2| j|kr2|  d||| j | j¡ | j}|  ¡  |S )Nzexpected %s/%s, got %s/%s)rP   rI   r}   r   )r   rP   rI   r	   r	   r
   rS   9  s    ÿzParserGenerator.expectc                 C   sF   t | jƒ}|d tjtjfv r*t | jƒ}q
|\| _| _| _| _| _	d S )Nr   )
r7   r   r   ÚCOMMENTÚNLrP   rI   ZbeginÚendÚline)r   Útupr	   r	   r
   r   A  s    
zParserGenerator.gettokenc              
   G   s^   |r8z|| }W n&   d  |gttt|ƒƒ ¡}Y n0 t|| j| jd | jd | jfƒ‚d S )Nú r   r   )Újoinr   ÚmapÚstrÚSyntaxErrorr   r€   r   )r   ÚmsgÚargsr	   r	   r
   r}   H  s     ÿzParserGenerator.raise_error)N)N)r   r   r   r   r8   r.   r*   r   rJ   r   rV   rl   rm   rW   rU   rq   rt   r{   rS   r   r}   r	   r	   r	   r
   r   
   s$   
	.$

r   c                   @   s   e Zd Zdd„ Zddd„ZdS )r^   c                 C   s
   g | _ d S r   )r'   )r   r	   r	   r
   r   S  s    zNFAState.__init__Nc                 C   s8   |d u st |tƒsJ ‚t |tƒs$J ‚| j ||f¡ d S r   )rA   r†   r^   r'   r)   ©r   r7   r6   r	   r	   r
   rb   V  s    zNFAState.addarc)N)r   r   r   r   rb   r	   r	   r	   r
   r^   Q  s   r^   c                   @   s0   e Zd Zdd„ Zdd„ Zdd„ Zdd„ Zd	Zd	S )
r_   c                 C   sL   t |tƒsJ ‚t tt|ƒƒtƒs$J ‚t |tƒs2J ‚|| _||v | _i | _d S r   )rA   Údictr7   Úiterr^   r`   r,   r'   )r   r`   Úfinalr	   r	   r
   r   ]  s    
zDFAState.__init__c                 C   s8   t |tƒsJ ‚|| jvsJ ‚t |tƒs*J ‚|| j|< d S r   )rA   r†   r'   r_   rŠ   r	   r	   r
   rb   e  s    zDFAState.addarcc                 C   s*   | j  ¡ D ]\}}||u r
|| j |< q
d S r   )r'   r(   )r   ÚoldÚnewr6   r7   r	   r	   r
   ro   k  s    zDFAState.unifystatec                 C   sd   t |tƒsJ ‚| j|jkrdS t| jƒt|jƒkr6dS | j ¡ D ]\}}||j |¡ur@ dS q@dS )NFT)rA   r_   r,   r#   r'   r(   Úget)r   Úotherr6   r7   r	   r	   r
   Ú__eq__p  s    zDFAState.__eq__N)r   r   r   r   rb   ro   r’   Ú__hash__r	   r	   r	   r
   r_   [  s
   r_   úGrammar.txtc                 C   s   t | ƒ}| ¡ S r   )r   r8   )r   Úpr	   r	   r
   Úgenerate_grammar€  s    r–   N)r”   )rg   r   r   r   ÚGrammarr   Úobjectr   r^   r_   r–   r	   r	   r	   r
   Ú<module>   s     I
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