1#! /usr/bin/env python
2
3"""Token constants (from "token.h")."""
4
5#  This file is automatically generated; please don't muck it up!
6#
7#  To update the symbols in this file, 'cd' to the top directory of
8#  the python source tree after building the interpreter and run:
9#
10#    ./python Lib/token.py
11
12#--start constants--
13ENDMARKER = 0
14NAME = 1
15NUMBER = 2
16STRING = 3
17NEWLINE = 4
18INDENT = 5
19DEDENT = 6
20LPAR = 7
21RPAR = 8
22LSQB = 9
23RSQB = 10
24COLON = 11
25COMMA = 12
26SEMI = 13
27PLUS = 14
28MINUS = 15
29STAR = 16
30SLASH = 17
31VBAR = 18
32AMPER = 19
33LESS = 20
34GREATER = 21
35EQUAL = 22
36DOT = 23
37PERCENT = 24
38BACKQUOTE = 25
39LBRACE = 26
40RBRACE = 27
41EQEQUAL = 28
42NOTEQUAL = 29
43LESSEQUAL = 30
44GREATEREQUAL = 31
45TILDE = 32
46CIRCUMFLEX = 33
47LEFTSHIFT = 34
48RIGHTSHIFT = 35
49DOUBLESTAR = 36
50PLUSEQUAL = 37
51MINEQUAL = 38
52STAREQUAL = 39
53SLASHEQUAL = 40
54PERCENTEQUAL = 41
55AMPEREQUAL = 42
56VBAREQUAL = 43
57CIRCUMFLEXEQUAL = 44
58LEFTSHIFTEQUAL = 45
59RIGHTSHIFTEQUAL = 46
60DOUBLESTAREQUAL = 47
61DOUBLESLASH = 48
62DOUBLESLASHEQUAL = 49
63AT = 50
64OP = 51
65ERRORTOKEN = 52
66N_TOKENS = 53
67NT_OFFSET = 256
68#--end constants--
69
70tok_name = {}
71for _name, _value in globals().items():
72    if type(_value) is type(0):
73        tok_name[_value] = _name
74del _name, _value
75
76
77def ISTERMINAL(x):
78    return x < NT_OFFSET
79
80def ISNONTERMINAL(x):
81    return x >= NT_OFFSET
82
83def ISEOF(x):
84    return x == ENDMARKER
85
86
87def main():
88    import re
89    import sys
90    args = sys.argv[1:]
91    inFileName = args and args[0] or "Include/token.h"
92    outFileName = "Lib/token.py"
93    if len(args) > 1:
94        outFileName = args[1]
95    try:
96        fp = open(inFileName)
97    except IOError, err:
98        sys.stdout.write("I/O error: %s\n" % str(err))
99        sys.exit(1)
100    lines = fp.read().split("\n")
101    fp.close()
102    prog = re.compile(
103        "#define[ \t][ \t]*([A-Z0-9][A-Z0-9_]*)[ \t][ \t]*([0-9][0-9]*)",
104        re.IGNORECASE)
105    tokens = {}
106    for line in lines:
107        match = prog.match(line)
108        if match:
109            name, val = match.group(1, 2)
110            val = int(val)
111            tokens[val] = name          # reverse so we can sort them...
112    keys = tokens.keys()
113    keys.sort()
114    # load the output skeleton from the target:
115    try:
116        fp = open(outFileName)
117    except IOError, err:
118        sys.stderr.write("I/O error: %s\n" % str(err))
119        sys.exit(2)
120    format = fp.read().split("\n")
121    fp.close()
122    try:
123        start = format.index("#--start constants--") + 1
124        end = format.index("#--end constants--")
125    except ValueError:
126        sys.stderr.write("target does not contain format markers")
127        sys.exit(3)
128    lines = []
129    for val in keys:
130        lines.append("%s = %d" % (tokens[val], val))
131    format[start:end] = lines
132    try:
133        fp = open(outFileName, 'w')
134    except IOError, err:
135        sys.stderr.write("I/O error: %s\n" % str(err))
136        sys.exit(4)
137    fp.write("\n".join(format))
138    fp.close()
139
140
141if __name__ == "__main__":
142    main()
143