lex_state3.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, 'inclusive'),
184479Sbinkertn@umich.edu          ('example', 'exclusive'))
194479Sbinkertn@umich.edu
204479Sbinkertn@umich.edut_PLUS = r'\+'
214479Sbinkertn@umich.edut_MINUS = r'-'
224479Sbinkertn@umich.edut_NUMBER = r'\d+'
234479Sbinkertn@umich.edu
244479Sbinkertn@umich.edu# Comments
254479Sbinkertn@umich.edudef t_comment(t):
264479Sbinkertn@umich.edu    r'/\*'
274479Sbinkertn@umich.edu    t.lexer.begin('comment')
284479Sbinkertn@umich.edu    print "Entering comment state"
294479Sbinkertn@umich.edu
304479Sbinkertn@umich.edudef t_comment_body_part(t):
314479Sbinkertn@umich.edu    r'(.|\n)*\*/'
324479Sbinkertn@umich.edu    print "comment body", t
334479Sbinkertn@umich.edu    t.lexer.begin('INITIAL')
344479Sbinkertn@umich.edu
354479Sbinkertn@umich.edudef t_error(t):
364479Sbinkertn@umich.edu    pass
374479Sbinkertn@umich.edu
384479Sbinkertn@umich.eduimport sys
394479Sbinkertn@umich.edu
404479Sbinkertn@umich.edulex.lex()
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424479Sbinkertn@umich.edu
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