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
|
// re2c $INPUT -o $OUTPUT -i
#include <assert.h>
#include <string.h>
/*!re2c
re2c:api:style = free-form;
re2c:define:YYCTYPE = char;
re2c:yyfill:enable = 0;
re2c:eof = 0;
*/
int lex1(const char *s)
{
const char *YYCURSOR = s, *YYLIMIT = s + strlen(s), *YYMARKER;
do {
/*!re2c
[^]* "a" { continue; }
$ { return 0; }
*/
} while (1);
}
int lex2(const char *s)
{
const char *YYCURSOR = s, *YYLIMIT = s + strlen(s), *YYMARKER;
do {
/*!re2c
[^\n]* "a" { continue; }
$ { return 0; }
*/
} while (1);
}
int lex3(const char *s)
{
const char *YYCURSOR = s, *YYLIMIT = s + strlen(s), *YYMARKER;
do {
/*!re2c
[^\n]* "a" { continue; }
$ { return 0; }
* { return 1; }
*/
} while (1);
}
int lex4(const char *s)
{
const char *YYCURSOR = s, *YYLIMIT = s + strlen(s), *YYMARKER;
do {
/*!re2c
[^\n]* "a" { continue; }
$ { return 0; }
"" { return 1; }
*/
} while (1);
}
int lex5(const char *s)
{
const char *YYCURSOR = s, *YYLIMIT = s + strlen(s), *YYMARKER;
do {
/*!re2c
[^\n]* "a" { continue; }
$ { return 0; }
"" { return 1; }
* { return 2; }
*/
} while (1);
}
int main()
{
assert(lex1("") == 0);
assert(lex1("a") == 0);
assert(lex2("") == 0);
assert(lex2("a") == 0);
assert(lex3("") == 0);
assert(lex3("a") == 0);
assert(lex3("a\n") == 1);
assert(lex3("b") == 1);
assert(lex4("") == 0);
assert(lex4("a") == 0);
assert(lex4("a\n") == 1);
assert(lex4("b") == 1);
assert(lex5("") == 0);
assert(lex5("a") == 0);
assert(lex5("a\n") == 2);
assert(lex5("b") == 2);
return 0;
}
|
