1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
// Code generated by re2go, DO NOT EDIT.
//go:generate re2go $INPUT -o $OUTPUT -i --api simple
package main
const (
ResultOk = iota
ResultFail
)
func lex(yyinput string) int {
var yycursor, yymarker int
{
var yych byte
yyaccept := 0
yych = yyinput[yycursor]
switch (yych) {
case '.':
goto yy3
case '0':
goto yy4
case '1','2','3','4','5','6','7','8','9':
goto yy5
default:
goto yy1
}
yy1:
yycursor += 1
yy2:
{ return ResultFail }
yy3:
yycursor += 1
yych = yyinput[yycursor]
switch (yych) {
case '0','1','2','3','4','5','6','7','8','9':
goto yy7
default:
goto yy2
}
yy4:
yyaccept = 0
yycursor += 1
yymarker = yycursor
yych = yyinput[yycursor]
switch (yych) {
case '.':
goto yy7
case '0','1','2','3','4','5','6','7','8','9':
goto yy9
case 'E':
fallthrough
case 'e':
goto yy11
default:
goto yy2
}
yy5:
yyaccept = 1
yycursor += 1
yymarker = yycursor
yych = yyinput[yycursor]
switch (yych) {
case '.':
goto yy7
case '0','1','2','3','4','5','6','7','8','9':
goto yy5
case 'E':
fallthrough
case 'e':
goto yy11
default:
goto yy6
}
yy6:
{ return ResultOk }
yy7:
yyaccept = 2
yycursor += 1
yymarker = yycursor
yych = yyinput[yycursor]
switch (yych) {
case '0','1','2','3','4','5','6','7','8','9':
goto yy7
case 'E':
fallthrough
case 'e':
goto yy11
default:
goto yy8
}
yy8:
{ return ResultOk }
yy9:
yycursor += 1
yych = yyinput[yycursor]
switch (yych) {
case '.':
goto yy7
case '0','1','2','3','4','5','6','7','8','9':
goto yy9
case 'E':
fallthrough
case 'e':
goto yy11
default:
goto yy10
}
yy10:
yycursor = yymarker
switch (yyaccept) {
case 0:
goto yy2
case 1:
goto yy6
default:
goto yy8
}
yy11:
yycursor += 1
yych = yyinput[yycursor]
switch (yych) {
case '+':
fallthrough
case '-':
goto yy12
case '0','1','2','3','4','5','6','7','8','9':
goto yy13
default:
goto yy10
}
yy12:
yycursor += 1
yych = yyinput[yycursor]
switch (yych) {
case '0','1','2','3','4','5','6','7','8','9':
goto yy13
default:
goto yy10
}
yy13:
yycursor += 1
yych = yyinput[yycursor]
switch (yych) {
case '0','1','2','3','4','5','6','7','8','9':
goto yy13
default:
goto yy8
}
}
}
func main() {
assert_eq := func(x, y int) { if x != y { panic("error") } }
assert_eq(lex("123\000"), ResultOk)
assert_eq(lex("123.4567\000"), ResultOk)
}
|
