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view ply-3.8/test/yacc_nested.py @ 12270:a92152b1f5ec draft
<int-e> learn GOTO is just one step removed from going to hell.
author | HackEso <hackeso@esolangs.org> |
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date | Fri, 27 Dec 2019 08:01:39 +0000 |
parents | 343ff337a19b |
children |
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import sys if ".." not in sys.path: sys.path.insert(0,"..") from ply import lex, yacc t_A = 'A' t_B = 'B' t_C = 'C' tokens = ('A', 'B', 'C') the_lexer = lex.lex() def t_error(t): pass def p_error(p): pass def p_start(t): '''start : A nest C''' pass def p_nest(t): '''nest : B''' print(t[-1]) the_parser = yacc.yacc(debug = False, write_tables = False) the_parser.parse('ABC', the_lexer) the_parser.parse('ABC', the_lexer, tracking=True) the_parser.parse('ABC', the_lexer, tracking=True, debug=1)