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/* Copyright 1995-1996,2000-2001,2003,2006,2008-2011,2018
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/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "alist.h"
#include "async.h"
#include "gsubr.h"
#include "hashtab.h"
#include "pairs.h"
#include "weak-table.h"
#include "objprop.h"
/* {Object Properties}
*/
static SCM object_whash;
SCM_DEFINE (scm_object_properties, "object-properties", 1, 0, 0,
(SCM obj),
"Return @var{obj}'s property list.")
#define FUNC_NAME s_scm_object_properties
{
return scm_weak_table_refq (object_whash, obj, SCM_EOL);
}
#undef FUNC_NAME
SCM_DEFINE (scm_set_object_properties_x, "set-object-properties!", 2, 0, 0,
(SCM obj, SCM alist),
"Set @var{obj}'s property list to @var{alist}.")
#define FUNC_NAME s_scm_set_object_properties_x
{
scm_weak_table_putq_x (object_whash, obj, alist);
return alist;
}
#undef FUNC_NAME
SCM_DEFINE (scm_object_property, "object-property", 2, 0, 0,
(SCM obj, SCM key),
"Return the property of @var{obj} with name @var{key}.")
#define FUNC_NAME s_scm_object_property
{
SCM assoc;
assoc = scm_assq (key, scm_object_properties (obj));
return (scm_is_pair (assoc) ? SCM_CDR (assoc) : SCM_BOOL_F);
}
#undef FUNC_NAME
SCM_DEFINE (scm_set_object_property_x, "set-object-property!", 3, 0, 0,
(SCM obj, SCM key, SCM value),
"In @var{obj}'s property list, set the property named @var{key}\n"
"to @var{value}.")
#define FUNC_NAME s_scm_set_object_property_x
{
SCM alist;
SCM assoc;
scm_i_pthread_mutex_lock (&scm_i_misc_mutex);
alist = scm_weak_table_refq (object_whash, obj, SCM_EOL);
assoc = scm_assq (key, alist);
if (scm_is_pair (assoc))
SCM_SETCDR (assoc, value);
else
scm_weak_table_putq_x (object_whash, obj, scm_acons (key, value, alist));
scm_i_pthread_mutex_unlock (&scm_i_misc_mutex);
return value;
}
#undef FUNC_NAME
void
scm_init_objprop ()
{
object_whash = scm_c_make_weak_table (0, SCM_WEAK_TABLE_KIND_KEY);
#include "objprop.x"
}
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