lex_state4.py revision 4479
14479Sbinkertn@umich.edu# lex_state2.py
24479Sbinkertn@umich.edu#
34479Sbinkertn@umich.edu# Bad state declaration
44479Sbinkertn@umich.edu
54479Sbinkertn@umich.eduimport sys
64479Sbinkertn@umich.edusys.path.insert(0,"..")
74479Sbinkertn@umich.edu
84479Sbinkertn@umich.eduimport ply.lex as lex
94479Sbinkertn@umich.edu
104479Sbinkertn@umich.edutokens = [
114479Sbinkertn@umich.edu    "PLUS",
124479Sbinkertn@umich.edu    "MINUS",
134479Sbinkertn@umich.edu    "NUMBER",
144479Sbinkertn@umich.edu    ]
154479Sbinkertn@umich.edu
164479Sbinkertn@umich.educomment = 1
174479Sbinkertn@umich.edustates = (('comment', 'exclsive'),)
184479Sbinkertn@umich.edu
194479Sbinkertn@umich.edut_PLUS = r'\+'
204479Sbinkertn@umich.edut_MINUS = r'-'
214479Sbinkertn@umich.edut_NUMBER = r'\d+'
224479Sbinkertn@umich.edu
234479Sbinkertn@umich.edu# Comments
244479Sbinkertn@umich.edudef t_comment(t):
254479Sbinkertn@umich.edu    r'/\*'
264479Sbinkertn@umich.edu    t.lexer.begin('comment')
274479Sbinkertn@umich.edu    print "Entering comment state"
284479Sbinkertn@umich.edu
294479Sbinkertn@umich.edudef t_comment_body_part(t):
304479Sbinkertn@umich.edu    r'(.|\n)*\*/'
314479Sbinkertn@umich.edu    print "comment body", t
324479Sbinkertn@umich.edu    t.lexer.begin('INITIAL')
334479Sbinkertn@umich.edu
344479Sbinkertn@umich.edudef t_error(t):
354479Sbinkertn@umich.edu    pass
364479Sbinkertn@umich.edu
374479Sbinkertn@umich.eduimport sys
384479Sbinkertn@umich.edu
394479Sbinkertn@umich.edulex.lex()
404479Sbinkertn@umich.edu
414479Sbinkertn@umich.edu
42