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#ifndef SCM_WEAK_SET_H
#define SCM_WEAK_SET_H
/* Copyright 2011,2018
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/scm.h"
/* The weak set API is currently only used internally. We could make it
public later, after some API review. */
/* Function that returns nonzero if the given object is the one we are
looking for. */
typedef int (*scm_t_set_predicate_fn) (SCM obj, void *closure);
/* Function to fold over the elements of a set. */
typedef SCM (*scm_t_set_fold_fn) (void *closure, SCM key, SCM result);
SCM_INTERNAL SCM scm_c_make_weak_set (unsigned long k);
SCM_INTERNAL SCM scm_weak_set_p (SCM h);
SCM_INTERNAL SCM scm_c_weak_set_lookup (SCM set, unsigned long raw_hash,
scm_t_set_predicate_fn pred,
void *closure, SCM dflt);
SCM_INTERNAL SCM scm_c_weak_set_add_x (SCM set, unsigned long raw_hash,
scm_t_set_predicate_fn pred,
void *closure, SCM obj);
SCM_INTERNAL void scm_c_weak_set_remove_x (SCM set, unsigned long raw_hash,
scm_t_set_predicate_fn pred,
void *closure);
SCM_INTERNAL SCM scm_weak_set_add_x (SCM set, SCM obj);
SCM_INTERNAL SCM scm_weak_set_remove_x (SCM set, SCM obj);
SCM_INTERNAL SCM scm_weak_set_clear_x (SCM set);
SCM_INTERNAL SCM scm_c_weak_set_fold (scm_t_set_fold_fn proc, void *closure,
SCM init, SCM set);
SCM_INTERNAL SCM scm_weak_set_fold (SCM proc, SCM init, SCM set);
SCM_INTERNAL SCM scm_weak_set_for_each (SCM proc, SCM set);
SCM_INTERNAL SCM scm_weak_set_map_to_list (SCM proc, SCM set);
SCM_INTERNAL void scm_i_weak_set_print (SCM exp, SCM port, scm_print_state *pstate);
SCM_INTERNAL void scm_init_weak_set (void);
#endif /* SCM_WEAK_SET_H */
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