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/* Copyright (C) 1995,1996, 2000, 2001, 2003, 2006, 2008 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 2.1 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
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "libguile/_scm.h"
#include "libguile/async.h"
#include "libguile/hashtab.h"
#include "libguile/alist.h"
#include "libguile/root.h"
#include "libguile/weaks.h"
#include "libguile/objprop.h"
/* {Object Properties}
*/
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_hashq_ref (scm_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 handle = scm_hashq_create_handle_x (scm_object_whash, obj, alist);
SCM_SETCDR (handle, 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_NIMP (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 h;
SCM assoc;
h = scm_hashq_create_handle_x (scm_object_whash, obj, SCM_EOL);
SCM_CRITICAL_SECTION_START;
assoc = scm_assq (key, SCM_CDR (h));
if (SCM_NIMP (assoc))
SCM_SETCDR (assoc, value);
else
{
assoc = scm_acons (key, value, SCM_CDR (h));
SCM_SETCDR (h, assoc);
}
SCM_CRITICAL_SECTION_END;
return value;
}
#undef FUNC_NAME
void
scm_init_objprop ()
{
scm_object_whash = scm_make_weak_key_hash_table (SCM_UNDEFINED);
#include "libguile/objprop.x"
}
/*
Local Variables:
c-file-style: "gnu"
End:
*/
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