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<ais523> ` tar -xf ply-3.8.tar.gz
author HackBot
date Wed, 23 Mar 2016 02:40:16 +0000
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7266:61a39a120dee 7267:343ff337a19b
1 # -----------------------------------------------------------------------------
2 # lex_opt_alias.py
3 #
4 # Tests ability to match up functions with states, aliases, and
5 # lexing tables.
6 # -----------------------------------------------------------------------------
7
8 import sys
9 if ".." not in sys.path: sys.path.insert(0,"..")
10
11 tokens = (
12 'NAME','NUMBER',
13 )
14
15 states = (('instdef','inclusive'),('spam','exclusive'))
16
17 literals = ['=','+','-','*','/', '(',')']
18
19 # Tokens
20
21 def t_instdef_spam_BITS(t):
22 r'[01-]+'
23 return t
24
25 t_NAME = r'[a-zA-Z_][a-zA-Z0-9_]*'
26
27 def NUMBER(t):
28 r'\d+'
29 try:
30 t.value = int(t.value)
31 except ValueError:
32 print("Integer value too large %s" % t.value)
33 t.value = 0
34 return t
35
36 t_ANY_NUMBER = NUMBER
37
38 t_ignore = " \t"
39 t_spam_ignore = t_ignore
40
41 def t_newline(t):
42 r'\n+'
43 t.lexer.lineno += t.value.count("\n")
44
45 def t_error(t):
46 print("Illegal character '%s'" % t.value[0])
47 t.lexer.skip(1)
48
49 t_spam_error = t_error
50
51 # Build the lexer
52 import ply.lex as lex
53 lex.lex(optimize=1,lextab="aliastab")
54 lex.runmain(data="3+4")