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glib/gobject/gparam.c
Tim Janik 3f4617caab applied patch from Matthias Clasen <maclas@gmx.de> to check for 
Tue Mar 19 18:57:12 2002  Tim Janik  <timj@gtk.org>

        * gtype.c (check_add_interface_L): applied patch from Matthias Clasen
        <maclas@gmx.de> to check for prerequisite of interfaces, fixes #74427.
        fixed mutex recursion in his patch (we can't call g_type_is_a() while
        holding a read lock).

        * gparam.c (canonalize_key): cleanup.
2002-03-19 19:26:27 +00:00

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/* GObject - GLib Type, Object, Parameter and Signal Library
* Copyright (C) 1997-1999, 2000-2001 Tim Janik and Red Hat, 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 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., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* MT safe
*/
#include "gparam.h"
#include "gvaluecollector.h"
#include <string.h>
/* --- defines --- */
#define G_PARAM_USER_MASK (~0 << G_PARAM_USER_SHIFT)
#define PSPEC_APPLIES_TO_VALUE(pspec, value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_PARAM_SPEC_VALUE_TYPE (pspec)))
#define G_SLOCK(mutex) g_static_mutex_lock (mutex)
#define G_SUNLOCK(mutex) g_static_mutex_unlock (mutex)
/* --- prototypes --- */
static void g_param_spec_class_base_init (GParamSpecClass *class);
static void g_param_spec_class_base_finalize (GParamSpecClass *class);
static void g_param_spec_class_init (GParamSpecClass *class,
gpointer class_data);
static void g_param_spec_init (GParamSpec *pspec,
GParamSpecClass *class);
static void g_param_spec_finalize (GParamSpec *pspec);
static void value_param_init (GValue *value);
static void value_param_free_value (GValue *value);
static void value_param_copy_value (const GValue *src_value,
GValue *dest_value);
static void value_param_transform_value (const GValue *src_value,
GValue *dest_value);
static gpointer value_param_peek_pointer (const GValue *value);
static gchar* value_param_collect_value (GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags);
static gchar* value_param_lcopy_value (const GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags);
/* --- variables --- */
static GQuark quark_floating = 0;
G_LOCK_DEFINE_STATIC (pspec_ref_count);
/* --- functions --- */
void
g_param_type_init (void) /* sync with gtype.c */
{
static const GTypeFundamentalInfo finfo = {
(G_TYPE_FLAG_CLASSED |
G_TYPE_FLAG_INSTANTIATABLE |
G_TYPE_FLAG_DERIVABLE |
G_TYPE_FLAG_DEEP_DERIVABLE),
};
static const GTypeValueTable param_value_table = {
value_param_init, /* value_init */
value_param_free_value, /* value_free */
value_param_copy_value, /* value_copy */
value_param_peek_pointer, /* value_peek_pointer */
"p", /* collect_format */
value_param_collect_value, /* collect_value */
"p", /* lcopy_format */
value_param_lcopy_value, /* lcopy_value */
};
static const GTypeInfo param_spec_info = {
sizeof (GParamSpecClass),
(GBaseInitFunc) g_param_spec_class_base_init,
(GBaseFinalizeFunc) g_param_spec_class_base_finalize,
(GClassInitFunc) g_param_spec_class_init,
(GClassFinalizeFunc) NULL,
NULL, /* class_data */
sizeof (GParamSpec),
0, /* n_preallocs */
(GInstanceInitFunc) g_param_spec_init,
&param_value_table,
};
GType type;
type = g_type_register_fundamental (G_TYPE_PARAM, "GParam", &param_spec_info, &finfo, G_TYPE_FLAG_ABSTRACT);
g_assert (type == G_TYPE_PARAM);
g_value_register_transform_func (G_TYPE_PARAM, G_TYPE_PARAM, value_param_transform_value);
}
static void
g_param_spec_class_base_init (GParamSpecClass *class)
{
}
static void
g_param_spec_class_base_finalize (GParamSpecClass *class)
{
}
static void
g_param_spec_class_init (GParamSpecClass *class,
gpointer class_data)
{
quark_floating = g_quark_from_static_string ("GParamSpec-floating");
class->value_type = G_TYPE_NONE;
class->finalize = g_param_spec_finalize;
class->value_set_default = NULL;
class->value_validate = NULL;
class->values_cmp = NULL;
}
static void
g_param_spec_init (GParamSpec *pspec,
GParamSpecClass *class)
{
pspec->name = NULL;
pspec->_nick = NULL;
pspec->_blurb = NULL;
pspec->flags = 0;
pspec->value_type = class->value_type;
pspec->owner_type = 0;
pspec->qdata = NULL;
pspec->ref_count = 1;
pspec->param_id = 0;
g_datalist_id_set_data (&pspec->qdata, quark_floating, GUINT_TO_POINTER (TRUE));
}
static void
g_param_spec_finalize (GParamSpec *pspec)
{
g_datalist_clear (&pspec->qdata);
g_free (pspec->name);
g_free (pspec->_nick);
g_free (pspec->_blurb);
g_type_free_instance ((GTypeInstance*) pspec);
}
GParamSpec*
g_param_spec_ref (GParamSpec *pspec)
{
g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
G_LOCK (pspec_ref_count);
if (pspec->ref_count > 0)
{
pspec->ref_count += 1;
G_UNLOCK (pspec_ref_count);
}
else
{
G_UNLOCK (pspec_ref_count);
g_return_val_if_fail (pspec->ref_count > 0, NULL);
}
return pspec;
}
void
g_param_spec_unref (GParamSpec *pspec)
{
g_return_if_fail (G_IS_PARAM_SPEC (pspec));
G_LOCK (pspec_ref_count);
if (pspec->ref_count > 0)
{
gboolean need_finalize;
/* sync with _sink */
pspec->ref_count -= 1;
need_finalize = pspec->ref_count == 0;
G_UNLOCK (pspec_ref_count);
if (need_finalize)
G_PARAM_SPEC_GET_CLASS (pspec)->finalize (pspec);
}
else
{
G_UNLOCK (pspec_ref_count);
g_return_if_fail (pspec->ref_count > 0);
}
}
void
g_param_spec_sink (GParamSpec *pspec)
{
g_return_if_fail (G_IS_PARAM_SPEC (pspec));
G_LOCK (pspec_ref_count);
if (pspec->ref_count > 0)
{
if (g_datalist_id_remove_no_notify (&pspec->qdata, quark_floating))
{
/* sync with _unref */
if (pspec->ref_count > 1)
pspec->ref_count -= 1;
else
{
G_UNLOCK (pspec_ref_count);
g_param_spec_unref (pspec);
return;
}
}
G_UNLOCK (pspec_ref_count);
}
else
{
G_UNLOCK (pspec_ref_count);
g_return_if_fail (pspec->ref_count > 0);
}
}
G_CONST_RETURN gchar*
g_param_spec_get_name (GParamSpec *pspec)
{
g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
return pspec->name;
}
G_CONST_RETURN gchar*
g_param_spec_get_nick (GParamSpec *pspec)
{
g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
return pspec->_nick ? pspec->_nick : pspec->name;
}
G_CONST_RETURN gchar*
g_param_spec_get_blurb (GParamSpec *pspec)
{
g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
return pspec->_blurb;
}
static void
canonalize_key (gchar *key)
{
gchar *p;
for (p = key; *p != 0; p++)
{
gchar c = *p;
if (c != '-' &&
(c < '0' || c > '9') &&
(c < 'A' || c > 'Z') &&
(c < 'a' || c > 'z'))
*p = '-';
}
}
gpointer
g_param_spec_internal (GType param_type,
const gchar *name,
const gchar *nick,
const gchar *blurb,
GParamFlags flags)
{
GParamSpec *pspec;
g_return_val_if_fail (G_TYPE_IS_PARAM (param_type) && param_type != G_TYPE_PARAM, NULL);
g_return_val_if_fail (name != NULL, NULL);
g_return_val_if_fail ((name[0] >= 'A' && name[0] <= 'Z') || (name[0] >= 'a' && name[0] <= 'z'), NULL);
pspec = (gpointer) g_type_create_instance (param_type);
pspec->name = g_strdup (name);
canonalize_key (pspec->name);
pspec->_nick = g_strdup (nick);
pspec->_blurb = g_strdup (blurb);
pspec->flags = (flags & G_PARAM_USER_MASK) | (flags & G_PARAM_MASK);
return pspec;
}
gpointer
g_param_spec_get_qdata (GParamSpec *pspec,
GQuark quark)
{
g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
return quark ? g_datalist_id_get_data (&pspec->qdata, quark) : NULL;
}
void
g_param_spec_set_qdata (GParamSpec *pspec,
GQuark quark,
gpointer data)
{
g_return_if_fail (G_IS_PARAM_SPEC (pspec));
g_return_if_fail (quark > 0);
g_datalist_id_set_data (&pspec->qdata, quark, data);
}
void
g_param_spec_set_qdata_full (GParamSpec *pspec,
GQuark quark,
gpointer data,
GDestroyNotify destroy)
{
g_return_if_fail (G_IS_PARAM_SPEC (pspec));
g_return_if_fail (quark > 0);
g_datalist_id_set_data_full (&pspec->qdata, quark, data, data ? destroy : (GDestroyNotify) NULL);
}
gpointer
g_param_spec_steal_qdata (GParamSpec *pspec,
GQuark quark)
{
g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
g_return_val_if_fail (quark > 0, NULL);
return g_datalist_id_remove_no_notify (&pspec->qdata, quark);
}
void
g_param_value_set_default (GParamSpec *pspec,
GValue *value)
{
g_return_if_fail (G_IS_PARAM_SPEC (pspec));
g_return_if_fail (G_IS_VALUE (value));
g_return_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value));
g_value_reset (value);
G_PARAM_SPEC_GET_CLASS (pspec)->value_set_default (pspec, value);
}
gboolean
g_param_value_defaults (GParamSpec *pspec,
GValue *value)
{
GValue dflt_value = { 0, };
gboolean defaults;
g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), FALSE);
g_return_val_if_fail (G_IS_VALUE (value), FALSE);
g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value), FALSE);
g_value_init (&dflt_value, G_PARAM_SPEC_VALUE_TYPE (pspec));
G_PARAM_SPEC_GET_CLASS (pspec)->value_set_default (pspec, &dflt_value);
defaults = G_PARAM_SPEC_GET_CLASS (pspec)->values_cmp (pspec, value, &dflt_value) == 0;
g_value_unset (&dflt_value);
return defaults;
}
gboolean
g_param_value_validate (GParamSpec *pspec,
GValue *value)
{
g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), FALSE);
g_return_val_if_fail (G_IS_VALUE (value), FALSE);
g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value), FALSE);
if (G_PARAM_SPEC_GET_CLASS (pspec)->value_validate)
{
GValue oval = *value;
if (G_PARAM_SPEC_GET_CLASS (pspec)->value_validate (pspec, value) ||
memcmp (&oval.data, &value->data, sizeof (oval.data)))
return TRUE;
}
return FALSE;
}
gboolean
g_param_value_convert (GParamSpec *pspec,
const GValue *src_value,
GValue *dest_value,
gboolean strict_validation)
{
GValue tmp_value = { 0, };
g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), FALSE);
g_return_val_if_fail (G_IS_VALUE (src_value), FALSE);
g_return_val_if_fail (G_IS_VALUE (dest_value), FALSE);
g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, dest_value), FALSE);
/* better leave dest_value untouched when returning FALSE */
g_value_init (&tmp_value, G_VALUE_TYPE (dest_value));
if (g_value_transform (src_value, &tmp_value) &&
(!g_param_value_validate (pspec, &tmp_value) || !strict_validation))
{
g_value_unset (dest_value);
/* values are relocatable */
memcpy (dest_value, &tmp_value, sizeof (tmp_value));
return TRUE;
}
else
{
g_value_unset (&tmp_value);
return FALSE;
}
}
gint
g_param_values_cmp (GParamSpec *pspec,
const GValue *value1,
const GValue *value2)
{
gint cmp;
/* param_values_cmp() effectively does: value1 - value2
* so the return values are:
* -1) value1 < value2
* 0) value1 == value2
* 1) value1 > value2
*/
g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), 0);
g_return_val_if_fail (G_IS_VALUE (value1), 0);
g_return_val_if_fail (G_IS_VALUE (value2), 0);
g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value1), 0);
g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value2), 0);
cmp = G_PARAM_SPEC_GET_CLASS (pspec)->values_cmp (pspec, value1, value2);
return CLAMP (cmp, -1, 1);
}
static void
value_param_init (GValue *value)
{
value->data[0].v_pointer = NULL;
}
static void
value_param_free_value (GValue *value)
{
if (value->data[0].v_pointer)
g_param_spec_unref (value->data[0].v_pointer);
}
static void
value_param_copy_value (const GValue *src_value,
GValue *dest_value)
{
if (src_value->data[0].v_pointer)
dest_value->data[0].v_pointer = g_param_spec_ref (src_value->data[0].v_pointer);
else
dest_value->data[0].v_pointer = NULL;
}
static void
value_param_transform_value (const GValue *src_value,
GValue *dest_value)
{
if (src_value->data[0].v_pointer &&
g_type_is_a (G_PARAM_SPEC_TYPE (dest_value->data[0].v_pointer), G_VALUE_TYPE (dest_value)))
dest_value->data[0].v_pointer = g_param_spec_ref (src_value->data[0].v_pointer);
else
dest_value->data[0].v_pointer = NULL;
}
static gpointer
value_param_peek_pointer (const GValue *value)
{
return value->data[0].v_pointer;
}
static gchar*
value_param_collect_value (GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags)
{
if (collect_values[0].v_pointer)
{
GParamSpec *param = collect_values[0].v_pointer;
if (param->g_type_instance.g_class == NULL)
return g_strconcat ("invalid unclassed param spec pointer for value type `",
G_VALUE_TYPE_NAME (value),
"'",
NULL);
else if (!g_value_type_compatible (G_PARAM_SPEC_TYPE (param), G_VALUE_TYPE (value)))
return g_strconcat ("invalid param spec type `",
G_PARAM_SPEC_TYPE_NAME (param),
"' for value type `",
G_VALUE_TYPE_NAME (value),
"'",
NULL);
value->data[0].v_pointer = g_param_spec_ref (param);
}
else
value->data[0].v_pointer = NULL;
return NULL;
}
static gchar*
value_param_lcopy_value (const GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags)
{
GParamSpec **param_p = collect_values[0].v_pointer;
if (!param_p)
return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
if (!value->data[0].v_pointer)
*param_p = NULL;
else if (collect_flags & G_VALUE_NOCOPY_CONTENTS)
*param_p = value->data[0].v_pointer;
else
*param_p = g_param_spec_ref (value->data[0].v_pointer);
return NULL;
}
/* --- param spec pool --- */
struct _GParamSpecPool
{
GStaticMutex smutex;
gboolean type_prefixing;
GHashTable *hash_table;
};
static guint
param_spec_pool_hash (gconstpointer key_spec)
{
const GParamSpec *key = key_spec;
const gchar *p;
guint h = key->owner_type;
for (p = key->name; *p; p++)
h = (h << 5) - h + *p;
return h;
}
static gboolean
param_spec_pool_equals (gconstpointer key_spec_1,
gconstpointer key_spec_2)
{
const GParamSpec *key1 = key_spec_1;
const GParamSpec *key2 = key_spec_2;
return (key1->owner_type == key2->owner_type &&
strcmp (key1->name, key2->name) == 0);
}
GParamSpecPool*
g_param_spec_pool_new (gboolean type_prefixing)
{
static GStaticMutex init_smutex = G_STATIC_MUTEX_INIT;
GParamSpecPool *pool = g_new (GParamSpecPool, 1);
memcpy (&pool->smutex, &init_smutex, sizeof (init_smutex));
pool->type_prefixing = type_prefixing != FALSE;
pool->hash_table = g_hash_table_new (param_spec_pool_hash, param_spec_pool_equals);
return pool;
}
void
g_param_spec_pool_insert (GParamSpecPool *pool,
GParamSpec *pspec,
GType owner_type)
{
gchar *p;
if (pool && pspec && owner_type > 0 && pspec->owner_type == 0)
{
G_SLOCK (&pool->smutex);
for (p = pspec->name; *p; p++)
{
if (!strchr (G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "-_", *p))
{
g_warning (G_STRLOC ": pspec name \"%s\" contains invalid characters", pspec->name);
G_SUNLOCK (&pool->smutex);
return;
}
}
pspec->owner_type = owner_type;
g_param_spec_ref (pspec);
g_hash_table_insert (pool->hash_table, pspec, pspec);
G_SUNLOCK (&pool->smutex);
}
else
{
g_return_if_fail (pool != NULL);
g_return_if_fail (pspec);
g_return_if_fail (owner_type > 0);
g_return_if_fail (pspec->owner_type == 0);
}
}
void
g_param_spec_pool_remove (GParamSpecPool *pool,
GParamSpec *pspec)
{
if (pool && pspec)
{
G_SLOCK (&pool->smutex);
if (g_hash_table_remove (pool->hash_table, pspec))
g_param_spec_unref (pspec);
else
g_warning (G_STRLOC ": attempt to remove unknown pspec `%s' from pool", pspec->name);
G_SUNLOCK (&pool->smutex);
}
else
{
g_return_if_fail (pool != NULL);
g_return_if_fail (pspec);
}
}
static inline GParamSpec*
param_spec_ht_lookup (GHashTable *hash_table,
const gchar *param_name,
GType owner_type,
gboolean walk_ancestors)
{
GParamSpec key, *pspec;
key.owner_type = owner_type;
key.name = (gchar*) param_name;
if (walk_ancestors)
do
{
pspec = g_hash_table_lookup (hash_table, &key);
if (pspec)
return pspec;
key.owner_type = g_type_parent (key.owner_type);
}
while (key.owner_type);
else
pspec = g_hash_table_lookup (hash_table, &key);
if (!pspec)
{
/* try canonicalized form */
key.name = g_strdup (param_name);
key.owner_type = owner_type;
canonalize_key (key.name);
if (walk_ancestors)
do
{
pspec = g_hash_table_lookup (hash_table, &key);
if (pspec)
{
g_free (key.name);
return pspec;
}
key.owner_type = g_type_parent (key.owner_type);
}
while (key.owner_type);
else
pspec = g_hash_table_lookup (hash_table, &key);
g_free (key.name);
}
return pspec;
}
GParamSpec*
g_param_spec_pool_lookup (GParamSpecPool *pool,
const gchar *param_name,
GType owner_type,
gboolean walk_ancestors)
{
GParamSpec *pspec;
gchar *delim;
if (!pool || !param_name)
{
g_return_val_if_fail (pool != NULL, NULL);
g_return_val_if_fail (param_name != NULL, NULL);
}
G_SLOCK (&pool->smutex);
delim = pool->type_prefixing ? strchr (param_name, ':') : NULL;
/* try quick and away, i.e. without prefix */
if (!delim)
{
pspec = param_spec_ht_lookup (pool->hash_table, param_name, owner_type, walk_ancestors);
G_SUNLOCK (&pool->smutex);
return pspec;
}
/* strip type prefix */
if (pool->type_prefixing && delim[1] == ':')
{
guint l = delim - param_name;
gchar stack_buffer[32], *buffer = l < 32 ? stack_buffer : g_new (gchar, l + 1);
GType type;
strncpy (buffer, param_name, delim - param_name);
buffer[l] = 0;
type = g_type_from_name (buffer);
if (l >= 32)
g_free (buffer);
if (type) /* type==0 isn't a valid type pefix */
{
/* sanity check, these cases don't make a whole lot of sense */
if ((!walk_ancestors && type != owner_type) || !g_type_is_a (owner_type, type))
{
G_SUNLOCK (&pool->smutex);
return NULL;
}
owner_type = type;
param_name += l + 2;
pspec = param_spec_ht_lookup (pool->hash_table, param_name, owner_type, walk_ancestors);
G_SUNLOCK (&pool->smutex);
return pspec;
}
}
/* malformed param_name */
G_SUNLOCK (&pool->smutex);
return NULL;
}
static void
pool_list (gpointer key,
gpointer value,
gpointer user_data)
{
GParamSpec *pspec = value;
gpointer *data = user_data;
GType owner_type = (GType) data[1];
if (owner_type == pspec->owner_type)
data[0] = g_list_prepend (data[0], pspec);
}
GList*
g_param_spec_pool_list_owned (GParamSpecPool *pool,
GType owner_type)
{
gpointer data[2];
g_return_val_if_fail (pool != NULL, NULL);
g_return_val_if_fail (owner_type > 0, NULL);
G_SLOCK (&pool->smutex);
data[0] = NULL;
data[1] = (gpointer) owner_type;
g_hash_table_foreach (pool->hash_table, pool_list, &data);
G_SUNLOCK (&pool->smutex);
return data[0];
}
static gint
pspec_compare_id (gconstpointer a,
gconstpointer b)
{
const GParamSpec *pspec1 = a, *pspec2 = b;
return pspec1->param_id < pspec2->param_id ? -1 : pspec1->param_id > pspec2->param_id;
}
static inline GSList*
pspec_list_remove_overridden (GSList *plist,
GHashTable *ht,
GType owner_type,
guint *n_p)
{
GSList *rlist = NULL;
while (plist)
{
GSList *tmp = plist->next;
GParamSpec *pspec = plist->data;
if (param_spec_ht_lookup (ht, pspec->name, owner_type, TRUE) != pspec)
g_slist_free_1 (plist);
else
{
plist->next = rlist;
rlist = plist;
*n_p += 1;
}
plist = tmp;
}
return rlist;
}
static void
pool_depth_list (gpointer key,
gpointer value,
gpointer user_data)
{
GParamSpec *pspec = value;
gpointer *data = user_data;
GSList **slists = data[0];
GType owner_type = (GType) data[1];
if (g_type_is_a (owner_type, pspec->owner_type))
{
guint d = g_type_depth (pspec->owner_type);
slists[d - 1] = g_slist_prepend (slists[d - 1], pspec);
}
}
GParamSpec** /* free result */
g_param_spec_pool_list (GParamSpecPool *pool,
GType owner_type,
guint *n_pspecs_p)
{
GParamSpec **pspecs, **p;
GSList **slists, *node;
gpointer data[2];
guint d, i;
g_return_val_if_fail (pool != NULL, NULL);
g_return_val_if_fail (owner_type > 0, NULL);
g_return_val_if_fail (n_pspecs_p != NULL, NULL);
G_SLOCK (&pool->smutex);
*n_pspecs_p = 0;
d = g_type_depth (owner_type);
slists = g_new0 (GSList*, d);
data[0] = slists;
data[1] = (gpointer) owner_type;
g_hash_table_foreach (pool->hash_table, pool_depth_list, &data);
for (i = 0; i < d - 1; i++)
slists[i] = pspec_list_remove_overridden (slists[i], pool->hash_table, owner_type, n_pspecs_p);
*n_pspecs_p += g_slist_length (slists[i]);
pspecs = g_new (GParamSpec*, *n_pspecs_p + 1);
p = pspecs;
for (i = 0; i < d; i++)
{
slists[i] = g_slist_sort (slists[i], pspec_compare_id);
for (node = slists[i]; node; node = node->next)
*p++ = node->data;
g_slist_free (slists[i]);
}
*p++ = NULL;
g_free (slists);
G_SUNLOCK (&pool->smutex);
return pspecs;
}
/* --- auxillary functions --- */
typedef struct
{
/* class portion */
GType value_type;
void (*finalize) (GParamSpec *pspec);
void (*value_set_default) (GParamSpec *pspec,
GValue *value);
gboolean (*value_validate) (GParamSpec *pspec,
GValue *value);
gint (*values_cmp) (GParamSpec *pspec,
const GValue *value1,
const GValue *value2);
} ParamSpecClassInfo;
static void
param_spec_generic_class_init (gpointer g_class,
gpointer class_data)
{
GParamSpecClass *class = g_class;
ParamSpecClassInfo *info = class_data;
class->value_type = info->value_type;
if (info->finalize)
class->finalize = info->finalize; /* optional */
class->value_set_default = info->value_set_default;
if (info->value_validate)
class->value_validate = info->value_validate; /* optional */
class->values_cmp = info->values_cmp;
g_free (class_data);
}
static void
default_value_set_default (GParamSpec *pspec,
GValue *value)
{
/* value is already zero initialized */
}
static gint
default_values_cmp (GParamSpec *pspec,
const GValue *value1,
const GValue *value2)
{
return memcmp (&value1->data, &value2->data, sizeof (value1->data));
}
GType
g_param_type_register_static (const gchar *name,
const GParamSpecTypeInfo *pspec_info)
{
GTypeInfo info = {
sizeof (GParamSpecClass), /* class_size */
NULL, /* base_init */
NULL, /* base_destroy */
param_spec_generic_class_init, /* class_init */
NULL, /* class_destroy */
NULL, /* class_data */
0, /* instance_size */
16, /* n_preallocs */
NULL, /* instance_init */
};
ParamSpecClassInfo *cinfo;
g_return_val_if_fail (name != NULL, 0);
g_return_val_if_fail (pspec_info != NULL, 0);
g_return_val_if_fail (g_type_from_name (name) == 0, 0);
g_return_val_if_fail (pspec_info->instance_size >= sizeof (GParamSpec), 0);
g_return_val_if_fail (g_type_name (pspec_info->value_type) != NULL, 0);
/* default: g_return_val_if_fail (pspec_info->value_set_default != NULL, 0); */
/* optional: g_return_val_if_fail (pspec_info->value_validate != NULL, 0); */
/* default: g_return_val_if_fail (pspec_info->values_cmp != NULL, 0); */
info.instance_size = pspec_info->instance_size;
info.n_preallocs = pspec_info->n_preallocs;
info.instance_init = (GInstanceInitFunc) pspec_info->instance_init;
cinfo = g_new (ParamSpecClassInfo, 1);
cinfo->value_type = pspec_info->value_type;
cinfo->finalize = pspec_info->finalize;
cinfo->value_set_default = pspec_info->value_set_default ? pspec_info->value_set_default : default_value_set_default;
cinfo->value_validate = pspec_info->value_validate;
cinfo->values_cmp = pspec_info->values_cmp ? pspec_info->values_cmp : default_values_cmp;
info.class_data = cinfo;
return g_type_register_static (G_TYPE_PARAM, name, &info, 0);
}
void
g_value_set_param (GValue *value,
GParamSpec *param)
{
g_return_if_fail (G_VALUE_HOLDS_PARAM (value));
if (param)
g_return_if_fail (G_IS_PARAM_SPEC (param));
if (value->data[0].v_pointer)
g_param_spec_unref (value->data[0].v_pointer);
value->data[0].v_pointer = param;
if (value->data[0].v_pointer)
g_param_spec_ref (value->data[0].v_pointer);
}
void
g_value_set_param_take_ownership (GValue *value,
GParamSpec *param)
{
g_return_if_fail (G_VALUE_HOLDS_PARAM (value));
if (param)
g_return_if_fail (G_IS_PARAM_SPEC (param));
if (value->data[0].v_pointer)
g_param_spec_unref (value->data[0].v_pointer);
value->data[0].v_pointer = param; /* we take over the reference count */
}
GParamSpec*
g_value_get_param (const GValue *value)
{
g_return_val_if_fail (G_VALUE_HOLDS_PARAM (value), NULL);
return value->data[0].v_pointer;
}
GParamSpec*
g_value_dup_param (const GValue *value)
{
g_return_val_if_fail (G_VALUE_HOLDS_PARAM (value), NULL);
return value->data[0].v_pointer ? g_param_spec_ref (value->data[0].v_pointer) : NULL;
}
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