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driver.cpython-39.opt-1.pyc
a DOgQ @ s d Z dZddgZddlZddlZddlZddlZddlZddlm Z m Z m Z m Z m Z G dd deZd d ZdddZdd Zdd Zdd Zedkreee dS )zZParser driver. This provides a high-level interface to parse a file into a syntax tree. z#Guido van Rossum <guido@python.org>Driver load_grammar N )grammarparsetokentokenizepgenc @ sH e Zd ZdddZdddZdddZdd d Zdd d Zdd dZdS )r Nc C s& || _ |d u rt }|| _|| _d S )N)r logging getLoggerloggerconvert)selfr r r r ,/usr/lib64/python3.9/lib2to3/pgen2/driver.py__init__ s zDriver.__init__Fc C st t | j| j}| d}d}d } } } } } d} |D ]} | \}}}} } |||fkr|\} }|| k r| d| | 7 } | }d}||k r| | || 7 } |}|tjtjfv r| |7 } | \}}|dr<|d7 }d}q<|t j krtj | }|r | j dt j| || |||| |fr6|r0| j d qnd} | \}}|dr<|d7 }d}q<t d||| |f|jS ) z4Parse a series of tokens and return the syntax tree.r r N z%s %r (prefix=%r)zStop.zincomplete input)r ZParserr r Zsetupr COMMENTNLendswithr OPZopmapr debugtok_nameZaddtokenZ ParseErrorrootnode)r tokensr plinenocolumntypevaluestartendZ line_textprefixZ quintupleZs_linenoZs_columnr r r parse_tokens& sV zDriver.parse_tokensc C s t |j}| ||S z*Parse a stream and return the syntax tree.)r generate_tokensreadliner$ )r streamr r r r r parse_stream_rawV s zDriver.parse_stream_rawc C s | ||S r% )r) )r r( r r r r parse_stream[ s zDriver.parse_streamc C s@ t j|d|d }| ||W d S 1 s20 Y dS )z(Parse a file and return the syntax tree.r)encodingN)ioopenr* )r filenamer, r r( r r r parse_file_ s zDriver.parse_filec C s t t|j}| ||S )z*Parse a string and return the syntax tree.)r r& r- StringIOr' r$ )r textr r r r r parse_stringd s zDriver.parse_string)NN)F)F)F)NF)F) __name__ __module__ __qualname__r r$ r) r* r0 r3 r r r r r s 0 c C s: t j| \}}|dkr d}|| dtttj d S )Nz.txtr .z.pickle)ospathsplitextjoinmapstrsys version_info)gtheadtailr r r _generate_pickle_namej s rC Grammar.txtTFc C s |du rt }|du r t| n|}|s2t|| s|d| t| }|r|d| z|| W q ty } z|d| W Y d}~qd}~0 0 nt }| | |S )z'Load the grammar (maybe from a pickle).Nz!Generating grammar tables from %sz Writing grammar tables to %szWriting failed: %s) r r rC _newerinfor Zgenerate_grammardumpOSErrorr Grammarload)r@ Zgpsaveforcer ger r r r q s $ c C s8 t j| sdS t j|s dS t j| t j|kS )z0Inquire whether file a was written since file b.FT)r8 r9 existsgetmtime)abr r r rE s rE c C sF t j|rt|S tt j|}t| |}t }| | |S )a Normally, loads a pickled grammar by doing pkgutil.get_data(package, pickled_grammar) where *pickled_grammar* is computed from *grammar_source* by adding the Python version and using a ``.pickle`` extension. However, if *grammar_source* is an extant file, load_grammar(grammar_source) is called instead. This facilitates using a packaged grammar file when needed but preserves load_grammar's automatic regeneration behavior when possible. ) r8 r9 isfiler rC basenamepkgutilget_datar rI loads)packageZgrammar_sourceZ pickled_namedatarM r r r load_packaged_grammar s rZ c G sB | st jdd } tjtjt jdd | D ]}t|ddd q*dS )zMain program, when run as a script: produce grammar pickle files. Calls load_grammar for each argument, a path to a grammar text file. r Nz %(message)s)levelr( formatT)rK rL )r> argvr basicConfigINFOstdoutr )argsr@ r r r main s rb __main__)rD NTFN)__doc__ __author____all__r- r8 r rU r> r r r r r r objectr rC r rE rZ rb r4 exitintr r r r <module> s$ M