python (3.12.0)
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Zedk( r ej, e e yy)zZParser driver.
This provides a high-level interface to parse a file into a syntax tree.
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Ar c d t j |j }| j || S z*Parse a stream and return the syntax tree.)r generate_tokensreadliner1 )r streamr r$ s r parse_stream_rawzDriver.parse_stream_rawV s) ))&//: //r c & | j || S r3 )r7 )r r6 r s r parse_streamzDriver.parse_stream[ s $$VU33r c t j |d| 5 }| j || cddd S # 1 sw Y yxY w)z(Parse a file and return the syntax tree.r)encodingN)ioopenr9 )r filenamer< r r6 s r
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t j z dz S )Nz.txtr .z.pickle)ospathsplitextjoinmapstrsys version_info)gtheadtails r _generate_pickle_namerV j sP !!"%JD$ v~ $;#c3+;+;"<= = IIr c |t j }| t | n|}|s t || sQ|j d| t j | }|r&|j d| |j | |S |S t j }|j | |S # t $ r }|j d| Y d}~|S d}~ww xY w)z'Load the grammar (maybe from a pickle).Nz!Generating grammar tables from %sz Writing grammar tables to %szWriting failed: %s) r
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j | | }t j }|j | |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.
) rK rL isfiler rV basenamepkgutilget_datar r] loads)packagegrammar_source pickled_namedatarb s r load_packaged_grammarrs sf
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|dd y)zMain program, when run as a script: produce grammar pickle files.
Calls load_grammar for each argument, a path to a grammar text file.
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