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
|
// Generated by re2java
// re2java $INPUT -o $OUTPUT
import java.nio.charset.StandardCharsets;
class Main {
static boolean lex_unsigned(byte[] yyinput) {
int yycursor = 0;
{
int yych = 0;
int yystate = 0;
yyl: while (true) {
switch (yystate) {
case 0:
yych = Byte.toUnsignedInt(yyinput[yycursor]);
yycursor += 1;
if (yych >= 0xFF) {
yystate = 1;
continue yyl;
}
{ return false; }
case 1:
{ return true; }
default:
throw new IllegalStateException("internal lexer error");
}
}
}
}
static boolean lex_signed(byte[] yyinput) {
int yycursor = 0;
{
int yych = 0;
int yystate = 0;
yyl: while (true) {
switch (yystate) {
case 0:
yych = yyinput[yycursor];
yycursor += 1;
if (yych >= 0xFF) {
yystate = 1;
continue yyl;
}
{ return false; }
case 1:
{ return true; }
default:
throw new IllegalStateException("internal lexer error");
}
}
}
}
public static void main(String []args) {
assert lex_unsigned(("\u00ff\0").getBytes(StandardCharsets.ISO_8859_1));
assert !lex_signed(("\u00ff\0").getBytes(StandardCharsets.ISO_8859_1)); // lexer works incorrectly
}
};
|
