lex_state_norule.py revision 4479 
1# lex_state2.py
2#
3# Declaration of a state for which no rules are defined
4
5import sys
6sys.path.insert(0,"..")
7
8import ply.lex as lex
9
10tokens = [
11    "PLUS",
12    "MINUS",
13    "NUMBER",
14    ]
15
16comment = 1
17states = (('comment', 'exclusive'),
18          ('example', 'exclusive'))
19
20t_PLUS = r'\+'
21t_MINUS = r'-'
22t_NUMBER = r'\d+'
23
24# Comments
25def t_comment(t):
26    r'/\*'
27    t.lexer.begin('comment')
28    print "Entering comment state"
29
30def t_comment_body_part(t):
31    r'(.|\n)*\*/'
32    print "comment body", t
33    t.lexer.begin('INITIAL')
34
35def t_error(t):
36    pass
37
38import sys
39
40lex.lex()
41
42
43