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#ifndef SCM_WEAK_LIST_H
#define SCM_WEAK_LIST_H
/* Copyright 2016,2018
Free Software Foundation, Inc.
This file is part of Guile.
Guile 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.
Guile 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 Guile. If not, see
<https://www.gnu.org/licenses/>. */
#include "libguile/pairs.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 */
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