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python36
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lib64
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python3.6
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lib2to3
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pgen2
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%s is in the first sets of %s as well as %s)r r r% r& � ValueErrorrE �update) r r0 r2 r3 ZtotalsetZ overlapcheckr4 r5 �fsetZinverseZitsfirstZsymbolr r r rE s s2 zParserGenerator.calcfirstc C s� i }d }x�| j tjkr�x| j tjkr.| j� qW | jtj�}| jtjd� | j� \}}| jtj� | j ||�}t |�}| j |� t |�}|||< |d kr |}q W ||fS )N�:) �typer � ENDMARKER�NEWLINEr �expectrC �OP� parse_rhs�make_dfar" � simplify_dfa) r r r r0 �a�zr2 ZoldlenZnewlenr r r r � s" zParserGenerator.parsec s� t |t�st�t |t�s t�� fdd�}� fdd�� t||�|�g}x�|D ]�}i }x<|jD ]2}x,|jD ]"\}} |d k rf� | |j|i �� qfW qZW xRt|j� �D ]B\}} x,|D ]} | j| kr�P q�W t| |�} |j | � |j | |� q�W qJW |S )Nc s i }� | |� |S )Nr )r3 �base)� addclosurer r �closure� s z)ParserGenerator.make_dfa.<locals>.closurec sL t | t�st�| |krd S d|| < x$| jD ]\}}|d kr*� ||� q*W d S )Nr )r< �NFAStater> r% )r3 rT r4 r5 )rU r r rU � s z,ParserGenerator.make_dfa.<locals>.addclosure) r< rW r> �DFAState�nfasetr% � setdefaultr$ r& r' �addarc) r r- �finishrV r+ r3 r% Znfastater4 r5 rY �str )rU r rP � s& zParserGenerator.make_dfac C s� t d|� |g}x�t|�D ]�\}}t d|||kr4dp6d� x^|jD ]T\}}||kr^|j|�} nt|�} |j|� |d kr�t d| � qBt d|| f � qBW qW d S )NzDump of NFA forz Statez(final)� z -> %dz %s -> %d)�print� enumerater% r) r" r' ) r r0 r- r\ Ztodor1 r3 r4 r5 �jr r r �dump_nfa� s zParserGenerator.dump_nfac C sl t d|� x\t|�D ]P\}}t d||jr,dp.d� x0t|jj� �D ] \}}t d||j|�f � qBW qW d S )NzDump of DFA forz Statez(final)r^ z %s -> %d)r_ r` r* r$ r% r& r) )r r0 r2 r1 r3 r4 r5 r r r �dump_dfa� s zParserGenerator.dump_dfac C s~ d}xt|rxd}xft |�D ]Z\}}xPt|d t|��D ]:}|| }||kr4||= x|D ]}|j||� qTW d}P q4W qW qW d S )NTFr )r` �ranger" � unifystate)r r2 Zchangesr1 Zstate_ira Zstate_jr3 r r r rQ � s z ParserGenerator.simplify_dfac C s� | j � \}}| jdkr ||fS t� }t� }|j|� |j|� x6| jdkrt| j� | j � \}}|j|� |j|� q@W ||fS d S )N�|)� parse_altrD rW r[ r )r rR rS ZaaZzzr r r rO � s zParserGenerator.parse_rhsc C sP | j � \}}x:| jdks*| jtjtjfkrF| j � \}}|j|� |}qW ||fS )N�(�[)rh ri )� parse_itemrD rJ r rC �STRINGr[ )r rR �br. �dr r r rg s zParserGenerator.parse_altc C s� | j dkr>| j� | j� \}}| jtjd� |j|� ||fS | j� \}}| j }|dkr`||fS | j� |j|� |dkr�||fS ||fS d S )Nri �]�+�*)ro rp )rD r rO rM r rN r[ � parse_atom)r rR rS rD r r r rj s zParserGenerator.parse_itemc C s� | j dkr4| j� | j� \}}| jtjd� ||fS | jtjtjfkrpt � }t � }|j || j � | j� ||fS | j d| j| j � d S )Nrh �)z+expected (...) or NAME or STRING, got %s/%s) rD r rO rM r rN rJ rC rk rW r[ � raise_error)r rR rS r r r rq ( s zParserGenerator.parse_atomc C sD | j |ks |d k r2| j|kr2| jd||| j | j� | j}| j� |S )Nzexpected %s/%s, got %s/%s)rJ rD rs r )r rJ rD r r r rM 9 s zParserGenerator.expectc C sJ t | j�}x"|d tjtjfkr,t | j�}q W |\| _| _| _| _| _ d S )Nr ) r5 r r �COMMENT�NLrJ rD Zbegin�end�line)r �tupr r r r A s zParserGenerator.gettokenc G s^ |r8y || }W n& dj |gttt|�� �}Y nX t|| j| jd | jd | jf��d S )N� r r )�joinr �map�str� SyntaxErrorr rv rw )r �msg�argsr r r rs H s zParserGenerator.raise_error)N)N)r r r r r6 r, r( r rE r rP rb rc rQ rO rg rj rq rM r rs r r r r r s$ . $ r c @ s e Zd Zdd� Zddd�ZdS )rW c C s g | _ d S )N)r% )r r r r r S s zNFAState.__init__Nc C s8 |d kst |t�st�t |t�s$t�| jj||f� d S )N)r< r| r> rW r% r' )r r5 r4 r r r r[ V s zNFAState.addarc)N)r r r r r[ r r r r rW Q s rW c @ s0 e Zd Zdd� Zdd� Zdd� Zdd� Zd Zd S ) rX c C sL t |t�st�t tt|��t�s$t�t |t�s2t�|| _||k| _i | _d S )N) r< �dictr> r5 �iterrW rY r* r% )r rY �finalr r r r ] s zDFAState.__init__c C s8 t |t�st�|| jks t�t |t�s*t�|| j|< d S )N)r< r| r> r% rX )r r5 r4 r r r r[ e s zDFAState.addarcc C s. x(| j j� D ]\}}||kr || j |< q W d S )N)r% r& )r �old�newr4 r5 r r r re k s zDFAState.unifystatec C sf t |t�st�| j|jkr dS t| j�t|j�kr6dS x*| jj� D ] \}}||jj|�k rBdS qBW dS )NFT)r< rX r> r* r" r% r& �get)r �otherr4 r5 r r r �__eq__p s zDFAState.__eq__N)r r r r r[ re r� �__hash__r r r r rX [ s rX � Grammar.txtc C s t | �}|j� S )N)r r6 )r �pr r r �generate_grammar� s r� N)r� ) r^ r r r ZGrammarr �objectr rW rX r� r r r r �<module> s I %
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