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, g_intern_static_string ("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))
201 g_param_spec_unref (pspec);
204 G_CONST_RETURN gchar*
205 g_param_spec_get_name (GParamSpec *pspec)
207 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
212 G_CONST_RETURN gchar*
213 g_param_spec_get_nick (GParamSpec *pspec)
215 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
221 GParamSpec *redirect_target;
223 redirect_target = g_param_spec_get_redirect_target (pspec);
224 if (redirect_target && redirect_target->_nick)
225 return redirect_target->_nick;
231 G_CONST_RETURN gchar*
232 g_param_spec_get_blurb (GParamSpec *pspec)
234 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
237 return pspec->_blurb;
240 GParamSpec *redirect_target;
242 redirect_target = g_param_spec_get_redirect_target (pspec);
243 if (redirect_target && redirect_target->_blurb)
244 return redirect_target->_blurb;
251 canonicalize_key (gchar *key)
255 for (p = key; *p != 0; p++)
260 (c < '0' || c > '9') &&
261 (c < 'A' || c > 'Z') &&
262 (c < 'a' || c > 'z'))
268 is_canonical (const gchar *key)
272 for (p = key; *p != 0; p++)
277 (c < '0' || c > '9') &&
278 (c < 'A' || c > 'Z') &&
279 (c < 'a' || c > 'z'))
287 g_param_spec_internal (GType param_type,
295 g_return_val_if_fail (G_TYPE_IS_PARAM (param_type) && param_type != G_TYPE_PARAM, NULL);
296 g_return_val_if_fail (name != NULL, NULL);
297 g_return_val_if_fail ((name[0] >= 'A' && name[0] <= 'Z') || (name[0] >= 'a' && name[0] <= 'z'), NULL);
298 g_return_val_if_fail (!(flags & G_PARAM_STATIC_NAME) || is_canonical (name), NULL);
300 pspec = (gpointer) g_type_create_instance (param_type);
302 if ((flags & G_PARAM_STATIC_NAME))
303 pspec->name = (gchar *) name;
306 pspec->name = g_strdup (name);
307 canonicalize_key (pspec->name);
310 if (flags & G_PARAM_STATIC_NICK)
311 pspec->_nick = (gchar *) nick;
313 pspec->_nick = g_strdup (nick);
315 if (flags & G_PARAM_STATIC_BLURB)
316 pspec->_blurb = (gchar *) blurb;
318 pspec->_blurb = g_strdup (blurb);
320 pspec->flags = (flags & G_PARAM_USER_MASK) | (flags & G_PARAM_MASK);
326 g_param_spec_get_qdata (GParamSpec *pspec,
329 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
331 return quark ? g_datalist_id_get_data (&pspec->qdata, quark) : NULL;
335 g_param_spec_set_qdata (GParamSpec *pspec,
339 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
340 g_return_if_fail (quark > 0);
342 g_datalist_id_set_data (&pspec->qdata, quark, data);
346 g_param_spec_set_qdata_full (GParamSpec *pspec,
349 GDestroyNotify destroy)
351 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
352 g_return_if_fail (quark > 0);
354 g_datalist_id_set_data_full (&pspec->qdata, quark, data, data ? destroy : (GDestroyNotify) NULL);
358 g_param_spec_steal_qdata (GParamSpec *pspec,
361 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
362 g_return_val_if_fail (quark > 0, NULL);
364 return g_datalist_id_remove_no_notify (&pspec->qdata, quark);
368 g_param_spec_get_redirect_target (GParamSpec *pspec)
370 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
372 if (G_IS_PARAM_SPEC_OVERRIDE (pspec))
374 GParamSpecOverride *ospec = G_PARAM_SPEC_OVERRIDE (pspec);
376 return ospec->overridden;
383 g_param_value_set_default (GParamSpec *pspec,
386 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
387 g_return_if_fail (G_IS_VALUE (value));
388 g_return_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value));
390 g_value_reset (value);
391 G_PARAM_SPEC_GET_CLASS (pspec)->value_set_default (pspec, value);
395 g_param_value_defaults (GParamSpec *pspec,
398 GValue dflt_value = { 0, };
401 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), FALSE);
402 g_return_val_if_fail (G_IS_VALUE (value), FALSE);
403 g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value), FALSE);
405 g_value_init (&dflt_value, G_PARAM_SPEC_VALUE_TYPE (pspec));
406 G_PARAM_SPEC_GET_CLASS (pspec)->value_set_default (pspec, &dflt_value);
407 defaults = G_PARAM_SPEC_GET_CLASS (pspec)->values_cmp (pspec, value, &dflt_value) == 0;
408 g_value_unset (&dflt_value);
414 g_param_value_validate (GParamSpec *pspec,
417 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), FALSE);
418 g_return_val_if_fail (G_IS_VALUE (value), FALSE);
419 g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value), FALSE);
421 if (G_PARAM_SPEC_GET_CLASS (pspec)->value_validate)
423 GValue oval = *value;
425 if (G_PARAM_SPEC_GET_CLASS (pspec)->value_validate (pspec, value) ||
426 memcmp (&oval.data, &value->data, sizeof (oval.data)))
434 g_param_value_convert (GParamSpec *pspec,
435 const GValue *src_value,
437 gboolean strict_validation)
439 GValue tmp_value = { 0, };
441 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), FALSE);
442 g_return_val_if_fail (G_IS_VALUE (src_value), FALSE);
443 g_return_val_if_fail (G_IS_VALUE (dest_value), FALSE);
444 g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, dest_value), FALSE);
446 /* better leave dest_value untouched when returning FALSE */
448 g_value_init (&tmp_value, G_VALUE_TYPE (dest_value));
449 if (g_value_transform (src_value, &tmp_value) &&
450 (!g_param_value_validate (pspec, &tmp_value) || !strict_validation))
452 g_value_unset (dest_value);
454 /* values are relocatable */
455 memcpy (dest_value, &tmp_value, sizeof (tmp_value));
461 g_value_unset (&tmp_value);
468 g_param_values_cmp (GParamSpec *pspec,
469 const GValue *value1,
470 const GValue *value2)
474 /* param_values_cmp() effectively does: value1 - value2
475 * so the return values are:
476 * -1) value1 < value2
477 * 0) value1 == value2
480 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), 0);
481 g_return_val_if_fail (G_IS_VALUE (value1), 0);
482 g_return_val_if_fail (G_IS_VALUE (value2), 0);
483 g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value1), 0);
484 g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value2), 0);
486 cmp = G_PARAM_SPEC_GET_CLASS (pspec)->values_cmp (pspec, value1, value2);
488 return CLAMP (cmp, -1, 1);
492 value_param_init (GValue *value)
494 value->data[0].v_pointer = NULL;
498 value_param_free_value (GValue *value)
500 if (value->data[0].v_pointer)
501 g_param_spec_unref (value->data[0].v_pointer);
505 value_param_copy_value (const GValue *src_value,
508 if (src_value->data[0].v_pointer)
509 dest_value->data[0].v_pointer = g_param_spec_ref (src_value->data[0].v_pointer);
511 dest_value->data[0].v_pointer = NULL;
515 value_param_transform_value (const GValue *src_value,
518 if (src_value->data[0].v_pointer &&
519 g_type_is_a (G_PARAM_SPEC_TYPE (dest_value->data[0].v_pointer), G_VALUE_TYPE (dest_value)))
520 dest_value->data[0].v_pointer = g_param_spec_ref (src_value->data[0].v_pointer);
522 dest_value->data[0].v_pointer = NULL;
526 value_param_peek_pointer (const GValue *value)
528 return value->data[0].v_pointer;
532 value_param_collect_value (GValue *value,
533 guint n_collect_values,
534 GTypeCValue *collect_values,
537 if (collect_values[0].v_pointer)
539 GParamSpec *param = collect_values[0].v_pointer;
541 if (param->g_type_instance.g_class == NULL)
542 return g_strconcat ("invalid unclassed param spec pointer for value type `",
543 G_VALUE_TYPE_NAME (value),
546 else if (!g_value_type_compatible (G_PARAM_SPEC_TYPE (param), G_VALUE_TYPE (value)))
547 return g_strconcat ("invalid param spec type `",
548 G_PARAM_SPEC_TYPE_NAME (param),
549 "' for value type `",
550 G_VALUE_TYPE_NAME (value),
553 value->data[0].v_pointer = g_param_spec_ref (param);
556 value->data[0].v_pointer = NULL;
562 value_param_lcopy_value (const GValue *value,
563 guint n_collect_values,
564 GTypeCValue *collect_values,
567 GParamSpec **param_p = collect_values[0].v_pointer;
570 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
572 if (!value->data[0].v_pointer)
574 else if (collect_flags & G_VALUE_NOCOPY_CONTENTS)
575 *param_p = value->data[0].v_pointer;
577 *param_p = g_param_spec_ref (value->data[0].v_pointer);
583 /* --- param spec pool --- */
584 struct _GParamSpecPool
587 gboolean type_prefixing;
588 GHashTable *hash_table;
592 param_spec_pool_hash (gconstpointer key_spec)
594 const GParamSpec *key = key_spec;
596 guint h = key->owner_type;
598 for (p = key->name; *p; p++)
599 h = (h << 5) - h + *p;
605 param_spec_pool_equals (gconstpointer key_spec_1,
606 gconstpointer key_spec_2)
608 const GParamSpec *key1 = key_spec_1;
609 const GParamSpec *key2 = key_spec_2;
611 return (key1->owner_type == key2->owner_type &&
612 strcmp (key1->name, key2->name) == 0);
616 g_param_spec_pool_new (gboolean type_prefixing)
618 static GStaticMutex init_smutex = G_STATIC_MUTEX_INIT;
619 GParamSpecPool *pool = g_new (GParamSpecPool, 1);
621 memcpy (&pool->smutex, &init_smutex, sizeof (init_smutex));
622 pool->type_prefixing = type_prefixing != FALSE;
623 pool->hash_table = g_hash_table_new (param_spec_pool_hash, param_spec_pool_equals);
629 g_param_spec_pool_insert (GParamSpecPool *pool,
635 if (pool && pspec && owner_type > 0 && pspec->owner_type == 0)
637 G_SLOCK (&pool->smutex);
638 for (p = pspec->name; *p; p++)
640 if (!strchr (G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "-_", *p))
642 g_warning (G_STRLOC ": pspec name \"%s\" contains invalid characters", pspec->name);
643 G_SUNLOCK (&pool->smutex);
648 pspec->owner_type = owner_type;
649 g_param_spec_ref (pspec);
650 g_hash_table_insert (pool->hash_table, pspec, pspec);
651 G_SUNLOCK (&pool->smutex);
655 g_return_if_fail (pool != NULL);
656 g_return_if_fail (pspec);
657 g_return_if_fail (owner_type > 0);
658 g_return_if_fail (pspec->owner_type == 0);
663 g_param_spec_pool_remove (GParamSpecPool *pool,
668 G_SLOCK (&pool->smutex);
669 if (g_hash_table_remove (pool->hash_table, pspec))
670 g_param_spec_unref (pspec);
672 g_warning (G_STRLOC ": attempt to remove unknown pspec `%s' from pool", pspec->name);
673 G_SUNLOCK (&pool->smutex);
677 g_return_if_fail (pool != NULL);
678 g_return_if_fail (pspec);
682 static inline GParamSpec*
683 param_spec_ht_lookup (GHashTable *hash_table,
684 const gchar *param_name,
686 gboolean walk_ancestors)
688 GParamSpec key, *pspec;
690 key.owner_type = owner_type;
691 key.name = (gchar*) param_name;
695 pspec = g_hash_table_lookup (hash_table, &key);
698 key.owner_type = g_type_parent (key.owner_type);
700 while (key.owner_type);
702 pspec = g_hash_table_lookup (hash_table, &key);
704 if (!pspec && !is_canonical (param_name))
706 /* try canonicalized form */
707 key.name = g_strdup (param_name);
708 key.owner_type = owner_type;
710 canonicalize_key (key.name);
714 pspec = g_hash_table_lookup (hash_table, &key);
720 key.owner_type = g_type_parent (key.owner_type);
722 while (key.owner_type);
724 pspec = g_hash_table_lookup (hash_table, &key);
732 g_param_spec_pool_lookup (GParamSpecPool *pool,
733 const gchar *param_name,
735 gboolean walk_ancestors)
740 if (!pool || !param_name)
742 g_return_val_if_fail (pool != NULL, NULL);
743 g_return_val_if_fail (param_name != NULL, NULL);
746 G_SLOCK (&pool->smutex);
748 delim = pool->type_prefixing ? strchr (param_name, ':') : NULL;
750 /* try quick and away, i.e. without prefix */
753 pspec = param_spec_ht_lookup (pool->hash_table, param_name, owner_type, walk_ancestors);
754 G_SUNLOCK (&pool->smutex);
759 /* strip type prefix */
760 if (pool->type_prefixing && delim[1] == ':')
762 guint l = delim - param_name;
763 gchar stack_buffer[32], *buffer = l < 32 ? stack_buffer : g_new (gchar, l + 1);
766 strncpy (buffer, param_name, delim - param_name);
768 type = g_type_from_name (buffer);
771 if (type) /* type==0 isn't a valid type pefix */
773 /* sanity check, these cases don't make a whole lot of sense */
774 if ((!walk_ancestors && type != owner_type) || !g_type_is_a (owner_type, type))
776 G_SUNLOCK (&pool->smutex);
782 pspec = param_spec_ht_lookup (pool->hash_table, param_name, owner_type, walk_ancestors);
783 G_SUNLOCK (&pool->smutex);
788 /* malformed param_name */
790 G_SUNLOCK (&pool->smutex);
796 pool_list (gpointer key,
800 GParamSpec *pspec = value;
801 gpointer *data = user_data;
802 GType owner_type = (GType) data[1];
804 if (owner_type == pspec->owner_type)
805 data[0] = g_list_prepend (data[0], pspec);
809 g_param_spec_pool_list_owned (GParamSpecPool *pool,
814 g_return_val_if_fail (pool != NULL, NULL);
815 g_return_val_if_fail (owner_type > 0, NULL);
817 G_SLOCK (&pool->smutex);
819 data[1] = (gpointer) owner_type;
820 g_hash_table_foreach (pool->hash_table, pool_list, &data);
821 G_SUNLOCK (&pool->smutex);
827 pspec_compare_id (gconstpointer a,
830 const GParamSpec *pspec1 = a, *pspec2 = b;
832 return pspec1->param_id < pspec2->param_id ? -1 : pspec1->param_id > pspec2->param_id;
835 static inline GSList*
836 pspec_list_remove_overridden_and_redirected (GSList *plist,
841 GSList *rlist = NULL;
845 GSList *tmp = plist->next;
846 GParamSpec *pspec = plist->data;
848 gboolean remove = FALSE;
850 /* Remove paramspecs that are redirected, and also paramspecs
851 * that have are overridden by non-redirected properties.
852 * The idea is to get the single paramspec for each name that
853 * best corresponds to what the application sees.
855 if (g_param_spec_get_redirect_target (pspec))
859 found = param_spec_ht_lookup (ht, pspec->name, owner_type, TRUE);
862 GParamSpec *redirect = g_param_spec_get_redirect_target (found);
863 if (redirect != pspec)
870 g_slist_free_1 (plist);
884 pool_depth_list (gpointer key,
888 GParamSpec *pspec = value;
889 gpointer *data = user_data;
890 GSList **slists = data[0];
891 GType owner_type = (GType) data[1];
893 if (g_type_is_a (owner_type, pspec->owner_type))
895 if (G_TYPE_IS_INTERFACE (pspec->owner_type))
897 slists[0] = g_slist_prepend (slists[0], pspec);
901 guint d = g_type_depth (pspec->owner_type);
903 slists[d - 1] = g_slist_prepend (slists[d - 1], pspec);
908 /* We handle interfaces specially since we don't want to
909 * count interface prerequsites like normal inheritance;
910 * the property comes from the direct inheritance from
911 * the prerequisite class, not from the interface that
914 * also 'depth' isn't a meaningful concept for interface
918 pool_depth_list_for_interface (gpointer key,
922 GParamSpec *pspec = value;
923 gpointer *data = user_data;
924 GSList **slists = data[0];
925 GType owner_type = (GType) data[1];
927 if (pspec->owner_type == owner_type)
928 slists[0] = g_slist_prepend (slists[0], pspec);
931 GParamSpec** /* free result */
932 g_param_spec_pool_list (GParamSpecPool *pool,
936 GParamSpec **pspecs, **p;
937 GSList **slists, *node;
941 g_return_val_if_fail (pool != NULL, NULL);
942 g_return_val_if_fail (owner_type > 0, NULL);
943 g_return_val_if_fail (n_pspecs_p != NULL, NULL);
945 G_SLOCK (&pool->smutex);
947 d = g_type_depth (owner_type);
948 slists = g_new0 (GSList*, d);
950 data[1] = (gpointer) owner_type;
952 g_hash_table_foreach (pool->hash_table,
953 G_TYPE_IS_INTERFACE (owner_type) ?
954 pool_depth_list_for_interface :
958 for (i = 0; i < d; i++)
959 slists[i] = pspec_list_remove_overridden_and_redirected (slists[i], pool->hash_table, owner_type, n_pspecs_p);
960 pspecs = g_new (GParamSpec*, *n_pspecs_p + 1);
962 for (i = 0; i < d; i++)
964 slists[i] = g_slist_sort (slists[i], pspec_compare_id);
965 for (node = slists[i]; node; node = node->next)
967 g_slist_free (slists[i]);
971 G_SUNLOCK (&pool->smutex);
977 /* --- auxillary functions --- */
982 void (*finalize) (GParamSpec *pspec);
983 void (*value_set_default) (GParamSpec *pspec,
985 gboolean (*value_validate) (GParamSpec *pspec,
987 gint (*values_cmp) (GParamSpec *pspec,
988 const GValue *value1,
989 const GValue *value2);
990 } ParamSpecClassInfo;
993 param_spec_generic_class_init (gpointer g_class,
996 GParamSpecClass *class = g_class;
997 ParamSpecClassInfo *info = class_data;
999 class->value_type = info->value_type;
1001 class->finalize = info->finalize; /* optional */
1002 class->value_set_default = info->value_set_default;
1003 if (info->value_validate)
1004 class->value_validate = info->value_validate; /* optional */
1005 class->values_cmp = info->values_cmp;
1006 g_free (class_data);
1010 default_value_set_default (GParamSpec *pspec,
1013 /* value is already zero initialized */
1017 default_values_cmp (GParamSpec *pspec,
1018 const GValue *value1,
1019 const GValue *value2)
1021 return memcmp (&value1->data, &value2->data, sizeof (value1->data));
1025 g_param_type_register_static (const gchar *name,
1026 const GParamSpecTypeInfo *pspec_info)
1029 sizeof (GParamSpecClass), /* class_size */
1030 NULL, /* base_init */
1031 NULL, /* base_destroy */
1032 param_spec_generic_class_init, /* class_init */
1033 NULL, /* class_destroy */
1034 NULL, /* class_data */
1035 0, /* instance_size */
1036 16, /* n_preallocs */
1037 NULL, /* instance_init */
1039 ParamSpecClassInfo *cinfo;
1041 g_return_val_if_fail (name != NULL, 0);
1042 g_return_val_if_fail (pspec_info != NULL, 0);
1043 g_return_val_if_fail (g_type_from_name (name) == 0, 0);
1044 g_return_val_if_fail (pspec_info->instance_size >= sizeof (GParamSpec), 0);
1045 g_return_val_if_fail (g_type_name (pspec_info->value_type) != NULL, 0);
1046 /* default: g_return_val_if_fail (pspec_info->value_set_default != NULL, 0); */
1047 /* optional: g_return_val_if_fail (pspec_info->value_validate != NULL, 0); */
1048 /* default: g_return_val_if_fail (pspec_info->values_cmp != NULL, 0); */
1050 info.instance_size = pspec_info->instance_size;
1051 info.n_preallocs = pspec_info->n_preallocs;
1052 info.instance_init = (GInstanceInitFunc) pspec_info->instance_init;
1053 cinfo = g_new (ParamSpecClassInfo, 1);
1054 cinfo->value_type = pspec_info->value_type;
1055 cinfo->finalize = pspec_info->finalize;
1056 cinfo->value_set_default = pspec_info->value_set_default ? pspec_info->value_set_default : default_value_set_default;
1057 cinfo->value_validate = pspec_info->value_validate;
1058 cinfo->values_cmp = pspec_info->values_cmp ? pspec_info->values_cmp : default_values_cmp;
1059 info.class_data = cinfo;
1061 return g_type_register_static (G_TYPE_PARAM, name, &info, 0);
1065 g_value_set_param (GValue *value,
1068 g_return_if_fail (G_VALUE_HOLDS_PARAM (value));
1070 g_return_if_fail (G_IS_PARAM_SPEC (param));
1072 if (value->data[0].v_pointer)
1073 g_param_spec_unref (value->data[0].v_pointer);
1074 value->data[0].v_pointer = param;
1075 if (value->data[0].v_pointer)
1076 g_param_spec_ref (value->data[0].v_pointer);
1080 g_value_set_param_take_ownership (GValue *value,
1083 g_value_take_param (value, param);
1087 g_value_take_param (GValue *value,
1090 g_return_if_fail (G_VALUE_HOLDS_PARAM (value));
1092 g_return_if_fail (G_IS_PARAM_SPEC (param));
1094 if (value->data[0].v_pointer)
1095 g_param_spec_unref (value->data[0].v_pointer);
1096 value->data[0].v_pointer = param; /* we take over the reference count */
1100 g_value_get_param (const GValue *value)
1102 g_return_val_if_fail (G_VALUE_HOLDS_PARAM (value), NULL);
1104 return value->data[0].v_pointer;
1108 g_value_dup_param (const GValue *value)
1110 g_return_val_if_fail (G_VALUE_HOLDS_PARAM (value), NULL);
1112 return value->data[0].v_pointer ? g_param_spec_ref (value->data[0].v_pointer) : NULL;
1115 #define __G_PARAM_C__
1116 #include "gobjectaliasdef.c"