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
|
/*
* This file is part of flex.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE.
*/
%{
/* A template scanner file to build "scanner.c". */
#include <stdio.h>
#include <stdlib.h>
%}
%option 8bit prefix="test"
%option nounput nomain noyywrap noinput reentrant
%option warn stack never-interactive
%x STATE_1
%%
<INITIAL>{
0 yy_push_state (STATE_1, yyscanner);
.|\n return 1;
}
<STATE_1>{
1 yy_pop_state(yyscanner);
.|\n return yy_top_state(yyscanner) + 1;
}
%%
int
main (int argc, char* const argv[])
{
FILE* fp;
int i;
yyscan_t yyscanner;
(void)argc;
if ((fp = fopen(argv[1],"r")) == NULL){
perror("Failed to open input file.");
return 1;
}
printf("Test 1: Reusing same scanner.\n");
testlex_init( &yyscanner );
testset_out ( stdout, yyscanner);
for (i=0; i < 4; ++i){
rewind(fp);
testset_in ( fp, yyscanner);
while( testlex(yyscanner) )
;
}
testlex_destroy( yyscanner );
printf("Test 1 OK\n\n");
printf("Test 2: Rescanning with new scanner each time.\n");
memset(&yyscanner,0,sizeof(yyscanner)); // Just to be clean about it.
for (i=0; i < 4; ++i){
yyscan_t s;
testlex_init( &s );
testset_out ( stdout, s);
rewind(fp);
testset_in ( fp, s);
while( testlex(s) )
;
testlex_destroy( s );
}
printf("Test 2 OK\n\n");
printf("TEST RETURNING OK.\n");
return 0;
}
|
