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comparison ply-3.8/test/yacc_nested.py @ 7267:343ff337a19b

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<ais523> ` tar -xf ply-3.8.tar.gz
author HackBot
date Wed, 23 Mar 2016 02:40:16 +0000
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7266:61a39a120dee 7267:343ff337a19b
1 import sys
2
3 if ".." not in sys.path: sys.path.insert(0,"..")
4
5 from ply import lex, yacc
6
7 t_A = 'A'
8 t_B = 'B'
9 t_C = 'C'
10
11 tokens = ('A', 'B', 'C')
12
13 the_lexer = lex.lex()
14
15 def t_error(t):
16 pass
17
18 def p_error(p):
19 pass
20
21 def p_start(t):
22 '''start : A nest C'''
23 pass
24
25 def p_nest(t):
26 '''nest : B'''
27 print(t[-1])
28
29 the_parser = yacc.yacc(debug = False, write_tables = False)
30
31 the_parser.parse('ABC', the_lexer)
32 the_parser.parse('ABC', the_lexer, tracking=True)
33 the_parser.parse('ABC', the_lexer, tracking=True, debug=1)