관리-도구
편집 파일: pgen.cpython-35.opt-1.pyc
��Yf�5 � @ s� d d l m Z m Z m Z Gd d � d e j � Z Gd d � d e � Z Gd d � d e � Z Gd 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/python35/lib64/python3.5/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 s� d } | d k r' t | � } | j } | | _ | | _ t j | j � | _ | j � | j � \ | _ | _ | d k r� | � i | _ | j � 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 zParserGenerator.__init__c C s� t � } t | j j � � } | j � | j | j � | j d | j � x; | D]3 } d t | j � } | | j | <| | j | <qR Wx� | D]� } | j | } g } x� | D]� } g } xK t | j j � � D]4 \ } } | j | j | | � | j | � f � q� W| j r/| j d | j | � f � | j | � q� W| j j | � | | j | | � f | j | j | <q� W| 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 sJ | j | } i } x0 t | � D]" } | j | | � } d | | <q W| S)Nr )r r$ r( )r r. r0 Zrawfirstr r4 �ilabelr r r r, 4 s zParserGenerator.make_firstc C s� t | j � } | d j � r� | | j k ry | | j k rH | j | S| j j | j | d f � | | j | <| Sq�t t | d � } | | j k r� | j | S| j j | d f � | | j | <| Sn� t | � } | d j � r2| | j k r| j | S| j j t j | f � | | j | <| SnN t j | } | | j k rY| j | S| j j | d f � | | j | <| Sd S)Nr )r" Zlabels�isalphar# Z symbol2labelr' �getattrr �tokens�eval�keywords�NAMEr Zopmap)r r. r4 r7 Zitoken�valuer r r r( = s6 zParserGenerator.make_labelc C sP t | j j � � } | j � x* | D]" } | | j k r& | j | � q& Wd S)N)r r r r r � calcfirst)r r/ r0 r r r r k s z ParserGenerator.addfirstsetsc C sc | j | } d | j | <| d } i } i } x� | j j � D]� \ } } | | j k r� | | j k r� | j | } | d k r� t d | � � n | j | � | j | } | j | � | | | <q@ d | | <| d i | | <q@ Wi } xa | j � D]S \ } } xD | D]< } | | k r@t d | | | | | f � � | | | <qWq� W| | j | <d S)Nr zrecursion 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 ZtotalsetZ overlapcheckr4 r5 �fsetZinverseZitsfirstZsymbolr r r r? s s2 zParserGenerator.calcfirstc C s� i } d } x� | j t j k r� x | j t j k rC | j � q$ W| j t j � } | j t j d � | j � \ } } | j t j � | j | | � } t | � } | j | � 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 ZoldlenZnewlenr r r r � s" zParserGenerator.parsec s � f d d � } � f d d � � t | | � | � g } x� | D]� } i } xP | j D]E } x< | j D]1 \ } } | d k ri � | | j | i � � qi WqY Wxm t | j � � D]Y \ } } x: | D] } | j | k r� Pq� Wt | | � } | j | � | j | | � q� WqC W| S)Nc s i } � | | � | S)Nr )r3 �base)� addclosurer r �closure� s z)ParserGenerator.make_dfa.<locals>.closurec sQ | | k r d Sd | | <x0 | j D]% \ } } | d k r$ � | | � q$ Wd S)Nr )r% )r3 rN r4 r5 )rO r r rO � s z,ParserGenerator.make_dfa.<locals>.addclosure)�DFAState�nfasetr% � setdefaultr$ r& r' �addarc) r r- �finishrP r+ r3 r% Znfastater4 r5 rR �str )rO r rJ � s" ! zParserGenerator.make_dfac C s� t d | � | g } x� t | � D]� \ } } t d | | | k rJ d pM d � x | j D]t \ } } | | k r� | j | � } n t | � } | j | � | d k r� t d | � q[ t d | | f � q[ Wq# Wd S)NzDump of NFA forz Statez(final)� z -> %dz %s -> %d)�print� enumerater% r) r" r' ) r r0 r- rU Ztodor1 r3 r4 r5 �jr r r �dump_nfa� s " zParserGenerator.dump_nfac C s� t d | � x| t | � D]n \ } } t d | | j r> d pA d � x@ t | j j � � D]) \ } } t d | | j | � f � q[ Wq Wd S)NzDump of DFA forz Statez(final)rW z %s -> %d)rX rY r* r$ r% r& r) )r r0 r2 r1 r3 r4 r5 r r r �dump_dfa� s "zParserGenerator.dump_dfac C s� d } x� | r� d } x� t | � D]u \ } } xf t | d t | � � D]K } | | } | | k rH | | =x | D] } | j | | � qr Wd } PqH Wq" Wq Wd S)NTFr )rY �ranger" � unifystate)r r2 Zchangesr1 Zstate_irZ Zstate_jr3 r r r rK � s z ParserGenerator.simplify_dfac C s� | j � \ } } | j d k r+ | | f St � } t � } | j | � | j | � xI | j d k r� | j � | j � \ } } | j | � | j | � qZ W| | f Sd S)N�|)� parse_altr> �NFAStaterT r )r rL rM ZaaZzzr r r rI � s zParserGenerator.parse_rhsc C sr | j � \ } } xS | j d k s? | j t j t j f k rg | j � \ } } | j | � | } q W| | f S)N�(�[)rb rc )� parse_itemr> rD r r= �STRINGrT )r rL �br. �dr r r r` s zParserGenerator.parse_altc C s� | j d k rU | j � | j � \ } } | j t j d � | j | � | | f S| j � \ } } | j } | d k r� | | f S| j � | j | � | d k r� | | f S| | f Sd S)Nrc �]�+�*)ri rj )r> r rI rG r rH rT � parse_atom)r rL rM r> r r r rd s zParserGenerator.parse_itemc C s� | j d k rH | j � | j � \ } } | j t j d � | | f S| j t j t j f k r� t � } t � } | j | | j � | j � | | f S| j d | j | j � d S)Nrb �)z+expected (...) or NAME or STRING, got %s/%s) r> r rI rG r rH rD r= re ra rT � raise_error)r rL rM r r r rk ( s zParserGenerator.parse_atomc C s` | j | k s* | d k rI | j | k rI | j d | | | j | j � | j } | j � | S)Nzexpected %s/%s, got %s/%s)rD r> rm r )r rD r> r r r rG 9 s * zParserGenerator.expectc C si t | j � } x/ | d t j t j f k r@ t | j � } q W| \ | _ | _ | _ | _ | _ d S)Nr ) r5 r r �COMMENT�NLrD r> Zbegin�end�line)r �tupr r r r A s zParserGenerator.gettokenc G sw | rD y | | } Wn- d j | g t t t | � � � } Yn Xt | | j | j d | j d | j f � � d S)N� r r )�joinr �map�str� SyntaxErrorr rp rq )r �msg�argsr r r rm H s *zParserGenerator.raise_error)r r r r r6 r, r( r r? r rJ r[ r\ rK rI r` rd rk rG r rm r r r r r s$ . $ r c @ s+ e Z d Z d d � Z d d d � Z d S)ra c C s g | _ d S)N)r% )r r r r r S s zNFAState.__init__Nc C s | j j | | f � d S)N)r% r' )r r5 r4 r r r rT V s zNFAState.addarc)r r r r rT r r r r ra Q s ra c @ sF e Z d Z d d � Z d d � Z d d � Z d d � Z d Z d S) rQ c C s% | | _ | | k | _ i | _ d S)N)rR r* r% )r rR �finalr r r r ] s zDFAState.__init__c C s | | j | <d S)N)r% )r r5 r4 r r r rT e s zDFAState.addarcc C s= x6 | j j � D]% \ } } | | k r | | j | <q Wd S)N)r% r& )r �old�newr4 r5 r r r r^ k s zDFAState.unifystatec C sx | j | j k r d St | j � t | j � k r8 d Sx9 | j j � D]( \ } } | | j j | � k rH d SqH Wd S)NFT)r* r" r% r& �get)r �otherr4 r5 r r r �__eq__p s zDFAState.__eq__N)r r r r rT r^ r �__hash__r r r r rQ [ s rQ z Grammar.txtc C s t | � } | j � S)N)r r6 )r �pr r r �generate_grammar� s r� N) rW r r r ZGrammarr �objectr ra rQ r� r r r r �<module> s � H %