1 /* GObject - GLib Type, Object, Parameter and Signal Library
2 * Copyright (C) 1997-1999, 2000-2001 Tim Janik and Red Hat, Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General
15 * Public License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
17 * Boston, MA 02111-1307, USA.
25 #include "gparamspecs.h"
27 #include "gvaluecollector.h"
28 #include "gobjectalias.h"
34 #define G_PARAM_USER_MASK (~0 << G_PARAM_USER_SHIFT)
35 #define PSPEC_APPLIES_TO_VALUE(pspec, value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_PARAM_SPEC_VALUE_TYPE (pspec)))
36 #define G_SLOCK(mutex) g_static_mutex_lock (mutex)
37 #define G_SUNLOCK(mutex) g_static_mutex_unlock (mutex)
40 /* --- prototypes --- */
41 static void g_param_spec_class_base_init (GParamSpecClass *class);
42 static void g_param_spec_class_base_finalize (GParamSpecClass *class);
43 static void g_param_spec_class_init (GParamSpecClass *class,
45 static void g_param_spec_init (GParamSpec *pspec,
46 GParamSpecClass *class);
47 static void g_param_spec_finalize (GParamSpec *pspec);
48 static void value_param_init (GValue *value);
49 static void value_param_free_value (GValue *value);
50 static void value_param_copy_value (const GValue *src_value,
52 static void value_param_transform_value (const GValue *src_value,
54 static gpointer value_param_peek_pointer (const GValue *value);
55 static gchar* value_param_collect_value (GValue *value,
56 guint n_collect_values,
57 GTypeCValue *collect_values,
59 static gchar* value_param_lcopy_value (const GValue *value,
60 guint n_collect_values,
61 GTypeCValue *collect_values,
65 /* --- variables --- */
66 static GQuark quark_floating = 0;
69 /* --- functions --- */
71 g_param_type_init (void)
73 static const GTypeFundamentalInfo finfo = {
74 (G_TYPE_FLAG_CLASSED |
75 G_TYPE_FLAG_INSTANTIATABLE |
76 G_TYPE_FLAG_DERIVABLE |
77 G_TYPE_FLAG_DEEP_DERIVABLE),
79 static const GTypeValueTable param_value_table = {
80 value_param_init, /* value_init */
81 value_param_free_value, /* value_free */
82 value_param_copy_value, /* value_copy */
83 value_param_peek_pointer, /* value_peek_pointer */
84 "p", /* collect_format */
85 value_param_collect_value, /* collect_value */
86 "p", /* lcopy_format */
87 value_param_lcopy_value, /* lcopy_value */
89 static const GTypeInfo param_spec_info = {
90 sizeof (GParamSpecClass),
92 (GBaseInitFunc) g_param_spec_class_base_init,
93 (GBaseFinalizeFunc) g_param_spec_class_base_finalize,
94 (GClassInitFunc) g_param_spec_class_init,
95 (GClassFinalizeFunc) NULL,
96 NULL, /* class_data */
100 (GInstanceInitFunc) g_param_spec_init,
106 type = g_type_register_fundamental (G_TYPE_PARAM, "GParam", ¶m_spec_info, &finfo, G_TYPE_FLAG_ABSTRACT);
107 g_assert (type == G_TYPE_PARAM);
108 g_value_register_transform_func (G_TYPE_PARAM, G_TYPE_PARAM, value_param_transform_value);
112 g_param_spec_class_base_init (GParamSpecClass *class)
117 g_param_spec_class_base_finalize (GParamSpecClass *class)
122 g_param_spec_class_init (GParamSpecClass *class,
125 quark_floating = g_quark_from_static_string ("GParamSpec-floating");
127 class->value_type = G_TYPE_NONE;
128 class->finalize = g_param_spec_finalize;
129 class->value_set_default = NULL;
130 class->value_validate = NULL;
131 class->values_cmp = NULL;
135 g_param_spec_init (GParamSpec *pspec,
136 GParamSpecClass *class)
140 pspec->_blurb = NULL;
142 pspec->value_type = class->value_type;
143 pspec->owner_type = 0;
145 pspec->ref_count = 1;
147 g_datalist_id_set_data (&pspec->qdata, quark_floating, GUINT_TO_POINTER (TRUE));
151 g_param_spec_finalize (GParamSpec *pspec)
153 g_datalist_clear (&pspec->qdata);
155 if (!(pspec->flags & G_PARAM_STATIC_NAME))
156 g_free (pspec->name);
158 if (!(pspec->flags & G_PARAM_STATIC_NICK))
159 g_free (pspec->_nick);
161 if (!(pspec->flags & G_PARAM_STATIC_BLURB))
162 g_free (pspec->_blurb);
164 g_type_free_instance ((GTypeInstance*) pspec);
168 g_param_spec_ref (GParamSpec *pspec)
170 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
171 g_return_val_if_fail (pspec->ref_count > 0, NULL);
173 g_atomic_int_inc (&pspec->ref_count);
179 g_param_spec_unref (GParamSpec *pspec)
183 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
184 g_return_if_fail (pspec->ref_count > 0);
186 is_zero = g_atomic_int_dec_and_test (&pspec->ref_count);
188 if (G_UNLIKELY (is_zero))
190 G_PARAM_SPEC_GET_CLASS (pspec)->finalize (pspec);
195 g_param_spec_sink (GParamSpec *pspec)
197 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
198 g_return_if_fail (pspec->ref_count > 0);
200 if (g_datalist_id_remove_no_notify (&pspec->qdata, quark_floating))
202 g_param_spec_unref (pspec);
206 G_CONST_RETURN gchar*
207 g_param_spec_get_name (GParamSpec *pspec)
209 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
214 G_CONST_RETURN gchar*
215 g_param_spec_get_nick (GParamSpec *pspec)
217 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
223 GParamSpec *redirect_target;
225 redirect_target = g_param_spec_get_redirect_target (pspec);
226 if (redirect_target && redirect_target->_nick)
227 return redirect_target->_nick;
233 G_CONST_RETURN gchar*
234 g_param_spec_get_blurb (GParamSpec *pspec)
236 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
239 return pspec->_blurb;
242 GParamSpec *redirect_target;
244 redirect_target = g_param_spec_get_redirect_target (pspec);
245 if (redirect_target && redirect_target->_blurb)
246 return redirect_target->_blurb;
253 canonicalize_key (gchar *key)
257 for (p = key; *p != 0; p++)
262 (c < '0' || c > '9') &&
263 (c < 'A' || c > 'Z') &&
264 (c < 'a' || c > 'z'))
270 is_canonical (const gchar *key)
274 for (p = key; *p != 0; p++)
279 (c < '0' || c > '9') &&
280 (c < 'A' || c > 'Z') &&
281 (c < 'a' || c > 'z'))
289 g_param_spec_internal (GType param_type,
297 g_return_val_if_fail (G_TYPE_IS_PARAM (param_type) && param_type != G_TYPE_PARAM, NULL);
298 g_return_val_if_fail (name != NULL, NULL);
299 g_return_val_if_fail ((name[0] >= 'A' && name[0] <= 'Z') || (name[0] >= 'a' && name[0] <= 'z'), NULL);
300 g_return_val_if_fail (!(flags & G_PARAM_STATIC_NAME) || is_canonical (name), NULL);
302 pspec = (gpointer) g_type_create_instance (param_type);
304 if ((flags & G_PARAM_STATIC_NAME))
305 pspec->name = (gchar *) name;
308 pspec->name = g_strdup (name);
309 canonicalize_key (pspec->name);
312 if (flags & G_PARAM_STATIC_NICK)
313 pspec->_nick = (gchar *) nick;
315 pspec->_nick = g_strdup (nick);
317 if (flags & G_PARAM_STATIC_BLURB)
318 pspec->_blurb = (gchar *) blurb;
320 pspec->_blurb = g_strdup (blurb);
322 pspec->flags = (flags & G_PARAM_USER_MASK) | (flags & G_PARAM_MASK);
328 g_param_spec_get_qdata (GParamSpec *pspec,
331 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
333 return quark ? g_datalist_id_get_data (&pspec->qdata, quark) : NULL;
337 g_param_spec_set_qdata (GParamSpec *pspec,
341 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
342 g_return_if_fail (quark > 0);
344 g_datalist_id_set_data (&pspec->qdata, quark, data);
348 g_param_spec_set_qdata_full (GParamSpec *pspec,
351 GDestroyNotify destroy)
353 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
354 g_return_if_fail (quark > 0);
356 g_datalist_id_set_data_full (&pspec->qdata, quark, data, data ? destroy : (GDestroyNotify) NULL);
360 g_param_spec_steal_qdata (GParamSpec *pspec,
363 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
364 g_return_val_if_fail (quark > 0, NULL);
366 return g_datalist_id_remove_no_notify (&pspec->qdata, quark);
370 g_param_spec_get_redirect_target (GParamSpec *pspec)
372 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
374 if (G_IS_PARAM_SPEC_OVERRIDE (pspec))
376 GParamSpecOverride *ospec = G_PARAM_SPEC_OVERRIDE (pspec);
378 return ospec->overridden;
385 g_param_value_set_default (GParamSpec *pspec,
388 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
389 g_return_if_fail (G_IS_VALUE (value));
390 g_return_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value));
392 g_value_reset (value);
393 G_PARAM_SPEC_GET_CLASS (pspec)->value_set_default (pspec, value);
397 g_param_value_defaults (GParamSpec *pspec,
400 GValue dflt_value = { 0, };
403 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), FALSE);
404 g_return_val_if_fail (G_IS_VALUE (value), FALSE);
405 g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value), FALSE);
407 g_value_init (&dflt_value, G_PARAM_SPEC_VALUE_TYPE (pspec));
408 G_PARAM_SPEC_GET_CLASS (pspec)->value_set_default (pspec, &dflt_value);
409 defaults = G_PARAM_SPEC_GET_CLASS (pspec)->values_cmp (pspec, value, &dflt_value) == 0;
410 g_value_unset (&dflt_value);
416 g_param_value_validate (GParamSpec *pspec,
419 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), FALSE);
420 g_return_val_if_fail (G_IS_VALUE (value), FALSE);
421 g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value), FALSE);
423 if (G_PARAM_SPEC_GET_CLASS (pspec)->value_validate)
425 GValue oval = *value;
427 if (G_PARAM_SPEC_GET_CLASS (pspec)->value_validate (pspec, value) ||
428 memcmp (&oval.data, &value->data, sizeof (oval.data)))
436 g_param_value_convert (GParamSpec *pspec,
437 const GValue *src_value,
439 gboolean strict_validation)
441 GValue tmp_value = { 0, };
443 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), FALSE);
444 g_return_val_if_fail (G_IS_VALUE (src_value), FALSE);
445 g_return_val_if_fail (G_IS_VALUE (dest_value), FALSE);
446 g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, dest_value), FALSE);
448 /* better leave dest_value untouched when returning FALSE */
450 g_value_init (&tmp_value, G_VALUE_TYPE (dest_value));
451 if (g_value_transform (src_value, &tmp_value) &&
452 (!g_param_value_validate (pspec, &tmp_value) || !strict_validation))
454 g_value_unset (dest_value);
456 /* values are relocatable */
457 memcpy (dest_value, &tmp_value, sizeof (tmp_value));
463 g_value_unset (&tmp_value);
470 g_param_values_cmp (GParamSpec *pspec,
471 const GValue *value1,
472 const GValue *value2)
476 /* param_values_cmp() effectively does: value1 - value2
477 * so the return values are:
478 * -1) value1 < value2
479 * 0) value1 == value2
482 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), 0);
483 g_return_val_if_fail (G_IS_VALUE (value1), 0);
484 g_return_val_if_fail (G_IS_VALUE (value2), 0);
485 g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value1), 0);
486 g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value2), 0);
488 cmp = G_PARAM_SPEC_GET_CLASS (pspec)->values_cmp (pspec, value1, value2);
490 return CLAMP (cmp, -1, 1);
494 value_param_init (GValue *value)
496 value->data[0].v_pointer = NULL;
500 value_param_free_value (GValue *value)
502 if (value->data[0].v_pointer)
503 g_param_spec_unref (value->data[0].v_pointer);
507 value_param_copy_value (const GValue *src_value,
510 if (src_value->data[0].v_pointer)
511 dest_value->data[0].v_pointer = g_param_spec_ref (src_value->data[0].v_pointer);
513 dest_value->data[0].v_pointer = NULL;
517 value_param_transform_value (const GValue *src_value,
520 if (src_value->data[0].v_pointer &&
521 g_type_is_a (G_PARAM_SPEC_TYPE (dest_value->data[0].v_pointer), G_VALUE_TYPE (dest_value)))
522 dest_value->data[0].v_pointer = g_param_spec_ref (src_value->data[0].v_pointer);
524 dest_value->data[0].v_pointer = NULL;
528 value_param_peek_pointer (const GValue *value)
530 return value->data[0].v_pointer;
534 value_param_collect_value (GValue *value,
535 guint n_collect_values,
536 GTypeCValue *collect_values,
539 if (collect_values[0].v_pointer)
541 GParamSpec *param = collect_values[0].v_pointer;
543 if (param->g_type_instance.g_class == NULL)
544 return g_strconcat ("invalid unclassed param spec pointer for value type `",
545 G_VALUE_TYPE_NAME (value),
548 else if (!g_value_type_compatible (G_PARAM_SPEC_TYPE (param), G_VALUE_TYPE (value)))
549 return g_strconcat ("invalid param spec type `",
550 G_PARAM_SPEC_TYPE_NAME (param),
551 "' for value type `",
552 G_VALUE_TYPE_NAME (value),
555 value->data[0].v_pointer = g_param_spec_ref (param);
558 value->data[0].v_pointer = NULL;
564 value_param_lcopy_value (const GValue *value,
565 guint n_collect_values,
566 GTypeCValue *collect_values,
569 GParamSpec **param_p = collect_values[0].v_pointer;
572 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
574 if (!value->data[0].v_pointer)
576 else if (collect_flags & G_VALUE_NOCOPY_CONTENTS)
577 *param_p = value->data[0].v_pointer;
579 *param_p = g_param_spec_ref (value->data[0].v_pointer);
585 /* --- param spec pool --- */
586 struct _GParamSpecPool
589 gboolean type_prefixing;
590 GHashTable *hash_table;
594 param_spec_pool_hash (gconstpointer key_spec)
596 const GParamSpec *key = key_spec;
598 guint h = key->owner_type;
600 for (p = key->name; *p; p++)
601 h = (h << 5) - h + *p;
607 param_spec_pool_equals (gconstpointer key_spec_1,
608 gconstpointer key_spec_2)
610 const GParamSpec *key1 = key_spec_1;
611 const GParamSpec *key2 = key_spec_2;
613 return (key1->owner_type == key2->owner_type &&
614 strcmp (key1->name, key2->name) == 0);
618 g_param_spec_pool_new (gboolean type_prefixing)
620 static GStaticMutex init_smutex = G_STATIC_MUTEX_INIT;
621 GParamSpecPool *pool = g_new (GParamSpecPool, 1);
623 memcpy (&pool->smutex, &init_smutex, sizeof (init_smutex));
624 pool->type_prefixing = type_prefixing != FALSE;
625 pool->hash_table = g_hash_table_new (param_spec_pool_hash, param_spec_pool_equals);
631 g_param_spec_pool_insert (GParamSpecPool *pool,
637 if (pool && pspec && owner_type > 0 && pspec->owner_type == 0)
639 G_SLOCK (&pool->smutex);
640 for (p = pspec->name; *p; p++)
642 if (!strchr (G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "-_", *p))
644 g_warning (G_STRLOC ": pspec name \"%s\" contains invalid characters", pspec->name);
645 G_SUNLOCK (&pool->smutex);
650 pspec->owner_type = owner_type;
651 g_param_spec_ref (pspec);
652 g_hash_table_insert (pool->hash_table, pspec, pspec);
653 G_SUNLOCK (&pool->smutex);
657 g_return_if_fail (pool != NULL);
658 g_return_if_fail (pspec);
659 g_return_if_fail (owner_type > 0);
660 g_return_if_fail (pspec->owner_type == 0);
665 g_param_spec_pool_remove (GParamSpecPool *pool,
670 G_SLOCK (&pool->smutex);
671 if (g_hash_table_remove (pool->hash_table, pspec))
672 g_param_spec_unref (pspec);
674 g_warning (G_STRLOC ": attempt to remove unknown pspec `%s' from pool", pspec->name);
675 G_SUNLOCK (&pool->smutex);
679 g_return_if_fail (pool != NULL);
680 g_return_if_fail (pspec);
684 static inline GParamSpec*
685 param_spec_ht_lookup (GHashTable *hash_table,
686 const gchar *param_name,
688 gboolean walk_ancestors)
690 GParamSpec key, *pspec;
692 key.owner_type = owner_type;
693 key.name = (gchar*) param_name;
697 pspec = g_hash_table_lookup (hash_table, &key);
700 key.owner_type = g_type_parent (key.owner_type);
702 while (key.owner_type);
704 pspec = g_hash_table_lookup (hash_table, &key);
706 if (!pspec && !is_canonical (param_name))
708 /* try canonicalized form */
709 key.name = g_strdup (param_name);
710 key.owner_type = owner_type;
712 canonicalize_key (key.name);
716 pspec = g_hash_table_lookup (hash_table, &key);
722 key.owner_type = g_type_parent (key.owner_type);
724 while (key.owner_type);
726 pspec = g_hash_table_lookup (hash_table, &key);
734 g_param_spec_pool_lookup (GParamSpecPool *pool,
735 const gchar *param_name,
737 gboolean walk_ancestors)
742 if (!pool || !param_name)
744 g_return_val_if_fail (pool != NULL, NULL);
745 g_return_val_if_fail (param_name != NULL, NULL);
748 G_SLOCK (&pool->smutex);
750 delim = pool->type_prefixing ? strchr (param_name, ':') : NULL;
752 /* try quick and away, i.e. without prefix */
755 pspec = param_spec_ht_lookup (pool->hash_table, param_name, owner_type, walk_ancestors);
756 G_SUNLOCK (&pool->smutex);
761 /* strip type prefix */
762 if (pool->type_prefixing && delim[1] == ':')
764 guint l = delim - param_name;
765 gchar stack_buffer[32], *buffer = l < 32 ? stack_buffer : g_new (gchar, l + 1);
768 strncpy (buffer, param_name, delim - param_name);
770 type = g_type_from_name (buffer);
773 if (type) /* type==0 isn't a valid type pefix */
775 /* sanity check, these cases don't make a whole lot of sense */
776 if ((!walk_ancestors && type != owner_type) || !g_type_is_a (owner_type, type))
778 G_SUNLOCK (&pool->smutex);
784 pspec = param_spec_ht_lookup (pool->hash_table, param_name, owner_type, walk_ancestors);
785 G_SUNLOCK (&pool->smutex);
790 /* malformed param_name */
792 G_SUNLOCK (&pool->smutex);
798 pool_list (gpointer key,
802 GParamSpec *pspec = value;
803 gpointer *data = user_data;
804 GType owner_type = (GType) data[1];
806 if (owner_type == pspec->owner_type)
807 data[0] = g_list_prepend (data[0], pspec);
811 g_param_spec_pool_list_owned (GParamSpecPool *pool,
816 g_return_val_if_fail (pool != NULL, NULL);
817 g_return_val_if_fail (owner_type > 0, NULL);
819 G_SLOCK (&pool->smutex);
821 data[1] = (gpointer) owner_type;
822 g_hash_table_foreach (pool->hash_table, pool_list, &data);
823 G_SUNLOCK (&pool->smutex);
829 pspec_compare_id (gconstpointer a,
832 const GParamSpec *pspec1 = a, *pspec2 = b;
834 return pspec1->param_id < pspec2->param_id ? -1 : pspec1->param_id > pspec2->param_id;
837 static inline GSList*
838 pspec_list_remove_overridden_and_redirected (GSList *plist,
843 GSList *rlist = NULL;
847 GSList *tmp = plist->next;
848 GParamSpec *pspec = plist->data;
850 gboolean remove = FALSE;
852 /* Remove paramspecs that are redirected, and also paramspecs
853 * that have are overridden by non-redirected properties.
854 * The idea is to get the single paramspec for each name that
855 * best corresponds to what the application sees.
857 if (g_param_spec_get_redirect_target (pspec))
861 found = param_spec_ht_lookup (ht, pspec->name, owner_type, TRUE);
864 GParamSpec *redirect = g_param_spec_get_redirect_target (found);
865 if (redirect != pspec)
872 g_slist_free_1 (plist);
886 pool_depth_list (gpointer key,
890 GParamSpec *pspec = value;
891 gpointer *data = user_data;
892 GSList **slists = data[0];
893 GType owner_type = (GType) data[1];
895 if (g_type_is_a (owner_type, pspec->owner_type))
897 if (G_TYPE_IS_INTERFACE (pspec->owner_type))
899 slists[0] = g_slist_prepend (slists[0], pspec);
903 guint d = g_type_depth (pspec->owner_type);
905 slists[d - 1] = g_slist_prepend (slists[d - 1], pspec);
910 /* We handle interfaces specially since we don't want to
911 * count interface prerequsites like normal inheritance;
912 * the property comes from the direct inheritance from
913 * the prerequisite class, not from the interface that
916 * also 'depth' isn't a meaningful concept for interface
920 pool_depth_list_for_interface (gpointer key,
924 GParamSpec *pspec = value;
925 gpointer *data = user_data;
926 GSList **slists = data[0];
927 GType owner_type = (GType) data[1];
929 if (pspec->owner_type == owner_type)
930 slists[0] = g_slist_prepend (slists[0], pspec);
933 GParamSpec** /* free result */
934 g_param_spec_pool_list (GParamSpecPool *pool,
938 GParamSpec **pspecs, **p;
939 GSList **slists, *node;
943 g_return_val_if_fail (pool != NULL, NULL);
944 g_return_val_if_fail (owner_type > 0, NULL);
945 g_return_val_if_fail (n_pspecs_p != NULL, NULL);
947 G_SLOCK (&pool->smutex);
949 d = g_type_depth (owner_type);
950 slists = g_new0 (GSList*, d);
952 data[1] = (gpointer) owner_type;
954 g_hash_table_foreach (pool->hash_table,
955 G_TYPE_IS_INTERFACE (owner_type) ?
956 pool_depth_list_for_interface :
960 for (i = 0; i < d; i++)
961 slists[i] = pspec_list_remove_overridden_and_redirected (slists[i], pool->hash_table, owner_type, n_pspecs_p);
962 pspecs = g_new (GParamSpec*, *n_pspecs_p + 1);
964 for (i = 0; i < d; i++)
966 slists[i] = g_slist_sort (slists[i], pspec_compare_id);
967 for (node = slists[i]; node; node = node->next)
969 g_slist_free (slists[i]);
973 G_SUNLOCK (&pool->smutex);
979 /* --- auxillary functions --- */
984 void (*finalize) (GParamSpec *pspec);
985 void (*value_set_default) (GParamSpec *pspec,
987 gboolean (*value_validate) (GParamSpec *pspec,
989 gint (*values_cmp) (GParamSpec *pspec,
990 const GValue *value1,
991 const GValue *value2);
992 } ParamSpecClassInfo;
995 param_spec_generic_class_init (gpointer g_class,
998 GParamSpecClass *class = g_class;
999 ParamSpecClassInfo *info = class_data;
1001 class->value_type = info->value_type;
1003 class->finalize = info->finalize; /* optional */
1004 class->value_set_default = info->value_set_default;
1005 if (info->value_validate)
1006 class->value_validate = info->value_validate; /* optional */
1007 class->values_cmp = info->values_cmp;
1008 g_free (class_data);
1012 default_value_set_default (GParamSpec *pspec,
1015 /* value is already zero initialized */
1019 default_values_cmp (GParamSpec *pspec,
1020 const GValue *value1,
1021 const GValue *value2)
1023 return memcmp (&value1->data, &value2->data, sizeof (value1->data));
1027 g_param_type_register_static (const gchar *name,
1028 const GParamSpecTypeInfo *pspec_info)
1031 sizeof (GParamSpecClass), /* class_size */
1032 NULL, /* base_init */
1033 NULL, /* base_destroy */
1034 param_spec_generic_class_init, /* class_init */
1035 NULL, /* class_destroy */
1036 NULL, /* class_data */
1037 0, /* instance_size */
1038 16, /* n_preallocs */
1039 NULL, /* instance_init */
1041 ParamSpecClassInfo *cinfo;
1043 g_return_val_if_fail (name != NULL, 0);
1044 g_return_val_if_fail (pspec_info != NULL, 0);
1045 g_return_val_if_fail (g_type_from_name (name) == 0, 0);
1046 g_return_val_if_fail (pspec_info->instance_size >= sizeof (GParamSpec), 0);
1047 g_return_val_if_fail (g_type_name (pspec_info->value_type) != NULL, 0);
1048 /* default: g_return_val_if_fail (pspec_info->value_set_default != NULL, 0); */
1049 /* optional: g_return_val_if_fail (pspec_info->value_validate != NULL, 0); */
1050 /* default: g_return_val_if_fail (pspec_info->values_cmp != NULL, 0); */
1052 info.instance_size = pspec_info->instance_size;
1053 info.n_preallocs = pspec_info->n_preallocs;
1054 info.instance_init = (GInstanceInitFunc) pspec_info->instance_init;
1055 cinfo = g_new (ParamSpecClassInfo, 1);
1056 cinfo->value_type = pspec_info->value_type;
1057 cinfo->finalize = pspec_info->finalize;
1058 cinfo->value_set_default = pspec_info->value_set_default ? pspec_info->value_set_default : default_value_set_default;
1059 cinfo->value_validate = pspec_info->value_validate;
1060 cinfo->values_cmp = pspec_info->values_cmp ? pspec_info->values_cmp : default_values_cmp;
1061 info.class_data = cinfo;
1063 return g_type_register_static (G_TYPE_PARAM, name, &info, 0);
1067 g_value_set_param (GValue *value,
1070 g_return_if_fail (G_VALUE_HOLDS_PARAM (value));
1072 g_return_if_fail (G_IS_PARAM_SPEC (param));
1074 if (value->data[0].v_pointer)
1075 g_param_spec_unref (value->data[0].v_pointer);
1076 value->data[0].v_pointer = param;
1077 if (value->data[0].v_pointer)
1078 g_param_spec_ref (value->data[0].v_pointer);
1082 g_value_set_param_take_ownership (GValue *value,
1085 g_value_take_param (value, param);
1089 g_value_take_param (GValue *value,
1092 g_return_if_fail (G_VALUE_HOLDS_PARAM (value));
1094 g_return_if_fail (G_IS_PARAM_SPEC (param));
1096 if (value->data[0].v_pointer)
1097 g_param_spec_unref (value->data[0].v_pointer);
1098 value->data[0].v_pointer = param; /* we take over the reference count */
1102 g_value_get_param (const GValue *value)
1104 g_return_val_if_fail (G_VALUE_HOLDS_PARAM (value), NULL);
1106 return value->data[0].v_pointer;
1110 g_value_dup_param (const GValue *value)
1112 g_return_val_if_fail (G_VALUE_HOLDS_PARAM (value), NULL);
1114 return value->data[0].v_pointer ? g_param_spec_ref (value->data[0].v_pointer) : NULL;
1117 #define __G_PARAM_C__
1118 #include "gobjectaliasdef.c"