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
|
/* classes: h_files */
#ifndef SCM_WEAK_LIST_H
#define SCM_WEAK_LIST_H
/* Copyright (C) 2016 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 3 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include "libguile/__scm.h"
#include "libguile/weak-vector.h"
static inline SCM
scm_i_weak_cons (SCM car, SCM cdr)
{
return scm_cons (scm_c_make_weak_vector (1, car), cdr);
}
static inline SCM
scm_i_weak_car (SCM pair)
{
return scm_c_weak_vector_ref (scm_car (pair), 0);
}
static inline void
scm_i_visit_weak_list (SCM *list_loc, void (*visit) (SCM))
{
SCM in = *list_loc, out = SCM_EOL;
while (scm_is_pair (in))
{
SCM car = scm_i_weak_car (in);
SCM cdr = scm_cdr (in);
if (!scm_is_eq (car, SCM_BOOL_F))
{
scm_set_cdr_x (in, out);
out = in;
visit (car);
}
in = cdr;
}
*list_loc = out;
}
#endif /* SCM_WEAK_LIST_H */
/*
Local Variables:
c-file-style: "gnu"
End:
*/
|
