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view ply-3.8/build/lib.linux-x86_64-2.7/ply/ygen.py @ 7910:7d5f1c5e44b1
<moon__> mkx bin/hfs//erro You have discovered an eerie caven. The air above the dark stone floor is alive with vorices of purple light and dark, boiling clouds. Seemingly bottomless glowing pit mark the surface.
author | HackBot |
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date | Sat, 07 May 2016 00:41:47 +0000 |
parents | a1845676eaa0 |
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# ply: ygen.py # # This is a support program that auto-generates different versions of the YACC parsing # function with different features removed for the purposes of performance. # # Users should edit the method LParser.parsedebug() in yacc.py. The source code # for that method is then used to create the other methods. See the comments in # yacc.py for further details. import os.path import shutil def get_source_range(lines, tag): srclines = enumerate(lines) start_tag = '#--! %s-start' % tag end_tag = '#--! %s-end' % tag for start_index, line in srclines: if line.strip().startswith(start_tag): break for end_index, line in srclines: if line.strip().endswith(end_tag): break return (start_index + 1, end_index) def filter_section(lines, tag): filtered_lines = [] include = True tag_text = '#--! %s' % tag for line in lines: if line.strip().startswith(tag_text): include = not include elif include: filtered_lines.append(line) return filtered_lines def main(): dirname = os.path.dirname(__file__) shutil.copy2(os.path.join(dirname, 'yacc.py'), os.path.join(dirname, 'yacc.py.bak')) with open(os.path.join(dirname, 'yacc.py'), 'r') as f: lines = f.readlines() parse_start, parse_end = get_source_range(lines, 'parsedebug') parseopt_start, parseopt_end = get_source_range(lines, 'parseopt') parseopt_notrack_start, parseopt_notrack_end = get_source_range(lines, 'parseopt-notrack') # Get the original source orig_lines = lines[parse_start:parse_end] # Filter the DEBUG sections out parseopt_lines = filter_section(orig_lines, 'DEBUG') # Filter the TRACKING sections out parseopt_notrack_lines = filter_section(parseopt_lines, 'TRACKING') # Replace the parser source sections with updated versions lines[parseopt_notrack_start:parseopt_notrack_end] = parseopt_notrack_lines lines[parseopt_start:parseopt_end] = parseopt_lines lines = [line.rstrip()+'\n' for line in lines] with open(os.path.join(dirname, 'yacc.py'), 'w') as f: f.writelines(lines) print('Updated yacc.py') if __name__ == '__main__': main()