16498Snate@binkert.org# lex_state_noerror.py
24479Sbinkertn@umich.edu#
34479Sbinkertn@umich.edu# Declaration of a state for which no rules are defined
44479Sbinkertn@umich.edu
54479Sbinkertn@umich.eduimport sys
66498Snate@binkert.orgif ".." not in sys.path: sys.path.insert(0,"..")
74479Sbinkertn@umich.edu
84479Sbinkertn@umich.eduimport ply.lex as lex
94479Sbinkertn@umich.edu
106498Snate@binkert.orgtokens = [
114479Sbinkertn@umich.edu    "PLUS",
124479Sbinkertn@umich.edu    "MINUS",
134479Sbinkertn@umich.edu    "NUMBER",
144479Sbinkertn@umich.edu    ]
154479Sbinkertn@umich.edu
164479Sbinkertn@umich.edustates = (('comment', 'exclusive'),)
174479Sbinkertn@umich.edu
184479Sbinkertn@umich.edut_PLUS = r'\+'
194479Sbinkertn@umich.edut_MINUS = r'-'
204479Sbinkertn@umich.edut_NUMBER = r'\d+'
214479Sbinkertn@umich.edu
224479Sbinkertn@umich.edu# Comments
234479Sbinkertn@umich.edudef t_comment(t):
244479Sbinkertn@umich.edu    r'/\*'
254479Sbinkertn@umich.edu    t.lexer.begin('comment')
266498Snate@binkert.org    print("Entering comment state")
274479Sbinkertn@umich.edu
284479Sbinkertn@umich.edudef t_comment_body_part(t):
294479Sbinkertn@umich.edu    r'(.|\n)*\*/'
306498Snate@binkert.org    print("comment body %s" % t)
314479Sbinkertn@umich.edu    t.lexer.begin('INITIAL')
324479Sbinkertn@umich.edu
334479Sbinkertn@umich.edudef t_error(t):
344479Sbinkertn@umich.edu    pass
354479Sbinkertn@umich.edu
364479Sbinkertn@umich.edu
374479Sbinkertn@umich.edulex.lex()
384479Sbinkertn@umich.edu
394479Sbinkertn@umich.edu
40