1# lex_state4.py
2#
3# Bad state declaration
4
5import sys
6if ".." not in sys.path: sys.path.insert(0,"..")
7
8import ply.lex as lex
9
10tokens = [
11    "PLUS",
12    "MINUS",
13    "NUMBER",
14    ]
15
16
17states = (('comment', 'exclsive'),)
18
19t_PLUS = r'\+'
20t_MINUS = r'-'
21t_NUMBER = r'\d+'
22
23# Comments
24def t_comment(t):
25    r'/\*'
26    t.lexer.begin('comment')
27    print("Entering comment state")
28
29def t_comment_body_part(t):
30    r'(.|\n)*\*/'
31    print("comment body %s" % t)
32    t.lexer.begin('INITIAL')
33
34def t_error(t):
35    pass
36
37
38
39lex.lex()
40
41
42