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dbus/glib/dbus-gvalue-utils.c
Robert McQueen 4a48fff0c7 2006-02-13 Robert McQueen <robot101@debian.org> 
* glib/dbus-binding-tool-glib.c, glib/dbus-gmain.c,
	glib/dbus-gsignature.c, glib/dbus-gtype-specialized.c,
	glib/dbus-gtype-specialized.h, glib/dbus-gvalue-utils.c,
	glib/dbus-gvalue-utils.h, glib/dbus-gvalue.c:
	Patch from Rob Taylor <rob.taylor@collabora.co.uk> to add a big
	missing piece of the glib bindings jigsaw puzzle. This modifies
	the existing specialised types to have N type parameters (rather
	than the current 1 or 2 for arrays and dictionaries respectively).
	You can then use this to get a glib type to represent any arbitrary
	D-Bus struct type using dbus_g_type_get_struct. The only
	implementation of these types is with GValueArrays as before,
	but it's now possible to store these in arrays, emit them in
	signals, etc.
2006-02-13 22:30:11 +00:00

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/* -*- mode: C; c-file-style: "gnu" -*- */
/* dbus-gvalue-utils.c: Non-DBus-specific functions related to GType/GValue
*
* Copyright (C) 2005 Red Hat, Inc.
*
* Licensed under the Academic Free License version 2.1
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <config.h>
#include "dbus/dbus-glib.h"
#include "dbus-gvalue-utils.h"
#include "dbus-gtest.h"
#include <glib.h>
#include <string.h>
#include <gobject/gvaluecollector.h>
static guint
fixed_type_get_size (GType type)
{
switch (type)
{
case G_TYPE_CHAR:
case G_TYPE_UCHAR:
return sizeof (gchar);
case G_TYPE_BOOLEAN:
return sizeof (gboolean);
case G_TYPE_LONG:
case G_TYPE_ULONG:
return sizeof (glong);
case G_TYPE_INT:
case G_TYPE_UINT:
return sizeof (gint);
case G_TYPE_INT64:
case G_TYPE_UINT64:
return sizeof (gint64);
case G_TYPE_FLOAT:
return sizeof (gfloat);
case G_TYPE_DOUBLE:
return sizeof (gdouble);
default:
return 0;
}
}
gboolean
_dbus_g_type_is_fixed (GType type)
{
return fixed_type_get_size (type) > 0;
}
guint
_dbus_g_type_fixed_get_size (GType type)
{
g_assert (_dbus_g_type_is_fixed (type));
return fixed_type_get_size (type);
}
gboolean
_dbus_gvalue_store (GValue *value,
gpointer storage)
{
/* FIXME - can we use the GValue lcopy_value method
* to do this in a cleaner way?
*/
switch (g_type_fundamental (G_VALUE_TYPE (value)))
{
case G_TYPE_CHAR:
*((gchar *) storage) = g_value_get_char (value);
return TRUE;
case G_TYPE_UCHAR:
*((guchar *) storage) = g_value_get_uchar (value);
return TRUE;
case G_TYPE_BOOLEAN:
*((gboolean *) storage) = g_value_get_boolean (value);
return TRUE;
case G_TYPE_LONG:
*((glong *) storage) = g_value_get_long (value);
return TRUE;
case G_TYPE_ULONG:
*((gulong *) storage) = g_value_get_ulong (value);
return TRUE;
case G_TYPE_INT:
*((gint *) storage) = g_value_get_int (value);
return TRUE;
case G_TYPE_UINT:
*((guint *) storage) = g_value_get_uint (value);
return TRUE;
case G_TYPE_INT64:
*((gint64 *) storage) = g_value_get_int64 (value);
return TRUE;
case G_TYPE_UINT64:
*((guint64 *) storage) = g_value_get_uint64 (value);
return TRUE;
case G_TYPE_DOUBLE:
*((gdouble *) storage) = g_value_get_double (value);
return TRUE;
case G_TYPE_STRING:
*((gchar **) storage) = (char*) g_value_get_string (value);
return TRUE;
case G_TYPE_POINTER:
*((gpointer *) storage) = g_value_get_pointer (value);
return TRUE;
case G_TYPE_OBJECT:
*((gpointer *) storage) = g_value_get_object (value);
return TRUE;
case G_TYPE_BOXED:
*((gpointer *) storage) = g_value_get_boxed (value);
return TRUE;
default:
return FALSE;
}
}
gboolean
_dbus_gvalue_set_from_pointer (GValue *value,
gconstpointer storage)
{
/* FIXME - is there a better way to do this? */
switch (g_type_fundamental (G_VALUE_TYPE (value)))
{
case G_TYPE_CHAR:
g_value_set_char (value, *((gchar *) storage));
return TRUE;
case G_TYPE_UCHAR:
g_value_set_uchar (value, *((guchar *) storage));
return TRUE;
case G_TYPE_BOOLEAN:
g_value_set_boolean (value, *((gboolean *) storage));
return TRUE;
case G_TYPE_LONG:
g_value_set_long (value, *((glong *) storage));
return TRUE;
case G_TYPE_ULONG:
g_value_set_ulong (value, *((gulong *) storage));
return TRUE;
case G_TYPE_INT:
g_value_set_int (value, *((gint *) storage));
return TRUE;
case G_TYPE_UINT:
g_value_set_uint (value, *((guint *) storage));
return TRUE;
case G_TYPE_INT64:
g_value_set_int64 (value, *((gint64 *) storage));
return TRUE;
case G_TYPE_UINT64:
g_value_set_uint64 (value, *((guint64 *) storage));
return TRUE;
case G_TYPE_DOUBLE:
g_value_set_double (value, *((gdouble *) storage));
return TRUE;
case G_TYPE_STRING:
g_value_set_string (value, *((gchar **) storage));
return TRUE;
case G_TYPE_POINTER:
g_value_set_pointer (value, *((gpointer *) storage));
return TRUE;
case G_TYPE_OBJECT:
g_value_set_object (value, *((gpointer *) storage));
return TRUE;
case G_TYPE_BOXED:
g_value_set_boxed (value, *((gpointer *) storage));
return TRUE;
default:
return FALSE;
}
}
gboolean
_dbus_gvalue_take (GValue *value,
GTypeCValue *cvalue)
{
GType g_type;
GTypeValueTable *value_table;
char *error_msg;
g_type = G_VALUE_TYPE (value);
value_table = g_type_value_table_peek (g_type);
error_msg = value_table->collect_value (value, 1, cvalue, G_VALUE_NOCOPY_CONTENTS);
if (error_msg)
{
g_warning ("%s: %s", G_STRLOC, error_msg);
g_free (error_msg);
return FALSE;
}
/* Clear the NOCOPY_CONTENTS flag; we want to take ownership
* of the value.
*/
value->data[1].v_uint &= ~(G_VALUE_NOCOPY_CONTENTS);
return TRUE;
}
gboolean
_dbus_gtype_can_signal_error (GType gtype)
{
switch (gtype)
{
case G_TYPE_BOOLEAN:
case G_TYPE_INT:
case G_TYPE_UINT:
case G_TYPE_STRING:
case G_TYPE_BOXED:
case G_TYPE_OBJECT:
return TRUE;
default:
return FALSE;
}
}
gboolean
_dbus_gvalue_signals_error (const GValue *value)
{
/* Hardcoded rules for return value semantics for certain
* types. Perhaps in the future we'd want an annotation
* specifying which return values are errors, but in
* reality people will probably just use boolean and
* boxed, and there the semantics are pretty standard.
*/
switch (G_TYPE_FUNDAMENTAL (G_VALUE_TYPE (value)))
{
case G_TYPE_BOOLEAN:
return (g_value_get_boolean (value) == FALSE);
break;
case G_TYPE_INT:
return (g_value_get_int (value) < 0);
break;
case G_TYPE_UINT:
return (g_value_get_uint (value) == 0);
break;
case G_TYPE_STRING:
return (g_value_get_string (value) == NULL);
break;
case G_TYPE_BOXED:
return (g_value_get_boxed (value) == NULL);
break;
case G_TYPE_OBJECT:
return (g_value_get_boxed (value) == NULL);
break;
default:
g_assert_not_reached ();
}
}
static gboolean
hash_func_from_gtype (GType gtype, GHashFunc *func)
{
switch (gtype)
{
case G_TYPE_CHAR:
case G_TYPE_UCHAR:
case G_TYPE_BOOLEAN:
case G_TYPE_INT:
case G_TYPE_UINT:
*func = NULL;
return TRUE;
case G_TYPE_STRING:
*func = g_str_hash;
return TRUE;
default:
return FALSE;
}
}
static void
unset_and_free_g_value (gpointer val)
{
GValue *value = val;
g_value_unset (value);
g_free (value);
}
static gboolean
hash_free_from_gtype (GType gtype, GDestroyNotify *func)
{
switch (gtype)
{
case G_TYPE_CHAR:
case G_TYPE_UCHAR:
case G_TYPE_BOOLEAN:
case G_TYPE_INT:
case G_TYPE_UINT:
*func = NULL;
return TRUE;
case G_TYPE_DOUBLE:
case G_TYPE_STRING:
*func = g_free;
return TRUE;
default:
if (gtype == G_TYPE_VALUE)
{
*func = unset_and_free_g_value;
return TRUE;
}
else if (gtype == G_TYPE_VALUE_ARRAY)
{
*func = (GDestroyNotify) g_value_array_free;
return TRUE;
}
else if (dbus_g_type_is_collection (gtype))
{
const DBusGTypeSpecializedCollectionVtable* vtable;
vtable = dbus_g_type_collection_peek_vtable (gtype);
if (vtable->base_vtable.simple_free_func)
{
*func = vtable->base_vtable.simple_free_func;
return TRUE;
}
}
else if (dbus_g_type_is_map (gtype))
{
const DBusGTypeSpecializedMapVtable* vtable;
vtable = dbus_g_type_map_peek_vtable (gtype);
if (vtable->base_vtable.simple_free_func)
{
*func = vtable->base_vtable.simple_free_func;
return TRUE;
}
}
else if (dbus_g_type_is_struct (gtype))
{
const DBusGTypeSpecializedStructVtable *vtable;
vtable = dbus_g_type_struct_peek_vtable (gtype);
if (vtable->base_vtable.simple_free_func)
{
*func = vtable->base_vtable.simple_free_func;
return TRUE;
}
}
return FALSE;
}
}
gboolean
_dbus_gtype_is_valid_hash_key (GType type)
{
GHashFunc func;
return hash_func_from_gtype (type, &func);
}
gboolean
_dbus_gtype_is_valid_hash_value (GType type)
{
GDestroyNotify func;
return hash_free_from_gtype (type, &func);
}
GHashFunc
_dbus_g_hash_func_from_gtype (GType gtype)
{
GHashFunc func;
gboolean ret;
ret = hash_func_from_gtype (gtype, &func);
g_assert (ret != FALSE);
return func;
}
GEqualFunc
_dbus_g_hash_equal_from_gtype (GType gtype)
{
g_assert (_dbus_gtype_is_valid_hash_key (gtype));
switch (gtype)
{
case G_TYPE_CHAR:
case G_TYPE_UCHAR:
case G_TYPE_BOOLEAN:
case G_TYPE_INT:
case G_TYPE_UINT:
return NULL;
case G_TYPE_STRING:
return g_str_equal;
default:
g_assert_not_reached ();
return NULL;
}
}
GDestroyNotify
_dbus_g_hash_free_from_gtype (GType gtype)
{
GDestroyNotify func;
gboolean ret;
ret = hash_free_from_gtype (gtype, &func);
g_assert (ret != FALSE);
return func;
}
static void
gvalue_from_hash_value (GValue *value, gpointer instance)
{
switch (g_type_fundamental (G_VALUE_TYPE (value)))
{
case G_TYPE_CHAR:
g_value_set_char (value, (gchar) GPOINTER_TO_INT (instance));
break;
case G_TYPE_UCHAR:
g_value_set_uchar (value, (guchar) GPOINTER_TO_UINT (instance));
break;
case G_TYPE_BOOLEAN:
g_value_set_boolean (value, (gboolean) GPOINTER_TO_UINT (instance));
break;
case G_TYPE_INT:
g_value_set_int (value, GPOINTER_TO_INT (instance));
break;
case G_TYPE_UINT:
g_value_set_uint (value, GPOINTER_TO_UINT (instance));
break;
case G_TYPE_DOUBLE:
g_value_set_double (value, *(gdouble *) instance);
break;
case G_TYPE_STRING:
g_value_set_static_string (value, instance);
break;
case G_TYPE_POINTER:
g_value_set_pointer (value, instance);
break;
case G_TYPE_BOXED:
g_value_set_static_boxed (value, instance);
break;
case G_TYPE_OBJECT:
g_value_set_object (value, instance);
g_object_unref (g_value_get_object (value));
break;
default:
g_assert_not_reached ();
break;
}
}
static gpointer
hash_value_from_gvalue (GValue *value)
{
switch (g_type_fundamental (G_VALUE_TYPE (value)))
{
case G_TYPE_CHAR:
return GINT_TO_POINTER ((int) g_value_get_char (value));
break;
case G_TYPE_UCHAR:
return GUINT_TO_POINTER ((guint) g_value_get_uchar (value));
break;
case G_TYPE_BOOLEAN:
return GUINT_TO_POINTER ((guint) g_value_get_boolean (value));
break;
case G_TYPE_INT:
return GINT_TO_POINTER (g_value_get_int (value));
break;
case G_TYPE_UINT:
return GUINT_TO_POINTER (g_value_get_uint (value));
break;
case G_TYPE_DOUBLE:
{
gdouble *p = (gdouble *) g_malloc0 (sizeof (gdouble));
*p = g_value_get_double (value);
return (gpointer) p;
}
break;
case G_TYPE_STRING:
return (gpointer) g_value_get_string (value);
break;
case G_TYPE_POINTER:
return g_value_get_pointer (value);
break;
case G_TYPE_BOXED:
return g_value_get_boxed (value);
break;
case G_TYPE_OBJECT:
return g_value_get_object (value);
break;
default:
g_assert_not_reached ();
return NULL;
}
}
struct DBusGHashTableValueForeachData
{
DBusGTypeSpecializedMapIterator func;
GType key_type;
GType value_type;
gpointer data;
};
static void
hashtable_foreach_with_values (gpointer key, gpointer value, gpointer user_data)
{
GValue key_val = {0, };
GValue value_val = {0, };
struct DBusGHashTableValueForeachData *data = user_data;
g_value_init (&key_val, data->key_type);
g_value_init (&value_val, data->value_type);
gvalue_from_hash_value (&key_val, key);
gvalue_from_hash_value (&value_val, value);
data->func (&key_val, &value_val, data->data);
}
static void
hashtable_iterator (GType hash_type,
gpointer instance,
DBusGTypeSpecializedMapIterator iterator,
gpointer user_data)
{
struct DBusGHashTableValueForeachData data;
GType key_gtype;
GType value_gtype;
key_gtype = dbus_g_type_get_map_key_specialization (hash_type);
value_gtype = dbus_g_type_get_map_value_specialization (hash_type);
data.func = iterator;
data.key_type = key_gtype;
data.value_type = value_gtype;
data.data = user_data;
g_hash_table_foreach (instance, hashtable_foreach_with_values, &data);
}
void
_dbus_g_hash_table_insert_steal_values (GHashTable *table,
GValue *key_val,
GValue *value_val)
{
gpointer key, val;
key = hash_value_from_gvalue (key_val);
val = hash_value_from_gvalue (value_val);
g_hash_table_insert (table, key, val);
}
static void
hashtable_append (DBusGTypeSpecializedAppendContext *ctx,
GValue *key,
GValue *val)
{
GHashTable *table;
table = g_value_get_boxed (ctx->val);
_dbus_g_hash_table_insert_steal_values (table, key, val);
}
static gpointer
hashtable_constructor (GType type)
{
GHashTable *ret;
GType key_gtype;
GType value_gtype;
key_gtype = dbus_g_type_get_map_key_specialization (type);
value_gtype = dbus_g_type_get_map_value_specialization (type);
ret = g_hash_table_new_full (_dbus_g_hash_func_from_gtype (key_gtype),
_dbus_g_hash_equal_from_gtype (key_gtype),
_dbus_g_hash_free_from_gtype (key_gtype),
_dbus_g_hash_free_from_gtype (value_gtype));
return ret;
}
static void
hashtable_insert_values (GHashTable *table,
const GValue *key_val,
const GValue *value_val)
{
GValue key_copy = {0, };
GValue value_copy = {0, };
g_value_init (&key_copy, G_VALUE_TYPE (key_val));
g_value_copy (key_val, &key_copy);
g_value_init (&value_copy, G_VALUE_TYPE (value_val));
g_value_copy (value_val, &value_copy);
_dbus_g_hash_table_insert_steal_values (table, &key_copy, &value_copy);
}
static void
hashtable_foreach_copy (const GValue *key, const GValue *val, gpointer data)
{
hashtable_insert_values ((GHashTable *) data, key, val);
}
static gpointer
hashtable_copy (GType type, gpointer src)
{
GHashTable *ghash;
GHashTable *ret;
GValue hashval = {0,};
ghash = src;
ret = hashtable_constructor (type);
g_value_init (&hashval, type);
g_value_set_static_boxed (&hashval, ghash);
dbus_g_type_map_value_iterate (&hashval, hashtable_foreach_copy, ret);
return ret;
}
static void
hashtable_simple_free (gpointer val)
{
g_hash_table_destroy (val);
}
static gpointer
valuearray_constructor (GType type)
{
GValueArray *ret;
guint size = dbus_g_type_get_struct_size (type);
guint i;
ret = g_value_array_new (size);
for (i=0; i < size; i++)
{
GValue val = {0,};
g_value_init (&val, dbus_g_type_get_struct_member_type (type, i));
g_value_array_append(ret, &val);
}
return (gpointer)ret;
}
static gpointer
valuearray_copy (GType type, gpointer src)
{
return g_value_array_copy ((GValueArray*) src);
}
static void
valuearray_simple_free (gpointer val)
{
g_value_array_free (val);
}
static gboolean
valuearray_get_member (GType type, gpointer instance,
guint member, GValue *ret)
{
GValueArray *va = (GValueArray*) instance;
const GValue *val;
if (member < dbus_g_type_get_struct_size (type))
{
val = g_value_array_get_nth (va, member);
g_value_copy (val, ret);
return TRUE;
}
else
return FALSE;
}
static gboolean
valuearray_set_member (GType type, gpointer instance,
guint member, const GValue *member_type)
{
GValueArray *va = (GValueArray*) instance;
GValue *vp;
if (member < dbus_g_type_get_struct_size (type))
{
vp = g_value_array_get_nth (va, member);
g_value_copy (member_type, vp);
return TRUE;
}
else
return FALSE;
}
static gpointer
array_constructor (GType type)
{
GArray *array;
guint elt_size;
GType elt_type;
gboolean zero_terminated;
gboolean clear;
elt_type = dbus_g_type_get_collection_specialization (type);
g_assert (elt_type != G_TYPE_INVALID);
elt_size = _dbus_g_type_fixed_get_size (elt_type);
/* These are "safe" defaults */
zero_terminated = TRUE; /* ((struct _DBusGRealArray*) garray)->zero_terminated; */
clear = TRUE; /* ((struct _DBusGRealArray*) garray)->clear; */
array = g_array_new (zero_terminated, clear, elt_size);
return array;
}
static gpointer
array_copy (GType type, gpointer src)
{
GArray *garray;
GArray *new;
garray = src;
new = array_constructor (type);
g_array_append_vals (new, garray->data, garray->len);
return new;
}
static void
array_simple_free (gpointer val)
{
GArray *array;
array = val;
g_array_free (array, TRUE);
}
static gboolean
array_fixed_accessor (GType type, gpointer instance, gpointer *values, guint *len)
{
GType elt_type;
GArray *array = instance;
elt_type = dbus_g_type_get_collection_specialization (type);
if (!_dbus_g_type_is_fixed (elt_type))
return FALSE;
*values = array->data;
*len = array->len;
return TRUE;
}
static gpointer
ptrarray_constructor (GType type)
{
/* Later we should determine a destructor, need g_ptr_array_destroy */
return g_ptr_array_new ();
}
static void
gvalue_from_ptrarray_value (GValue *value, gpointer instance)
{
switch (g_type_fundamental (G_VALUE_TYPE (value)))
{
case G_TYPE_STRING:
g_value_set_string (value, instance);
break;
case G_TYPE_POINTER:
g_value_set_pointer (value, instance);
break;
case G_TYPE_BOXED:
g_value_set_static_boxed (value, instance);
break;
case G_TYPE_OBJECT:
g_value_set_object (value, instance);
g_object_unref (g_value_get_object (value));
break;
default:
g_assert_not_reached ();
break;
}
}
static gpointer
ptrarray_value_from_gvalue (const GValue *value)
{
switch (g_type_fundamental (G_VALUE_TYPE (value)))
{
case G_TYPE_STRING:
return (gpointer) g_value_get_string (value);
break;
case G_TYPE_POINTER:
return g_value_get_pointer (value);
break;
case G_TYPE_BOXED:
return g_value_get_boxed (value);
break;
case G_TYPE_OBJECT:
return g_value_get_object (value);
break;
default:
g_assert_not_reached ();
return NULL;
}
}
static void
ptrarray_iterator (GType hash_type,
gpointer instance,
DBusGTypeSpecializedCollectionIterator iterator,
gpointer user_data)
{
GPtrArray *ptrarray;
GType elt_gtype;
guint i;
ptrarray = instance;
elt_gtype = dbus_g_type_get_collection_specialization (hash_type);
for (i = 0; i < ptrarray->len; i++)
{
GValue val = {0, };
g_value_init (&val, elt_gtype);
gvalue_from_ptrarray_value (&val, g_ptr_array_index (ptrarray, i));
iterator (&val, user_data);
}
}
static void
ptrarray_copy_elt (const GValue *val, gpointer user_data)
{
GPtrArray *dest = user_data;
GValue val_copy = {0, };
g_value_init (&val_copy, G_VALUE_TYPE (val));
g_value_copy (val, &val_copy);
g_ptr_array_add (dest, ptrarray_value_from_gvalue (&val_copy));
}
static gpointer
ptrarray_copy (GType type, gpointer src)
{
GPtrArray *new;
GValue array_val = {0, };
g_value_init (&array_val, type);
g_value_set_static_boxed (&array_val, src);
new = ptrarray_constructor (type);
dbus_g_type_collection_value_iterate (&array_val, ptrarray_copy_elt, new);
return new;
}
static void
ptrarray_append (DBusGTypeSpecializedAppendContext *ctx, GValue *value)
{
GPtrArray *array;
array = g_value_get_boxed (ctx->val);
g_ptr_array_add (array, ptrarray_value_from_gvalue (value));
}
static void
ptrarray_free (GType type, gpointer val)
{
/* XXX: this function appears to leak the contents of the array */
GPtrArray *array;
array = val;
g_ptr_array_free (array, TRUE);
}
static gpointer
slist_constructor (GType type)
{
return NULL;
}
static void
slist_iterator (GType list_type,
gpointer instance,
DBusGTypeSpecializedCollectionIterator iterator,
gpointer user_data)
{
GSList *slist;
GType elt_gtype;
slist = instance;
elt_gtype = dbus_g_type_get_collection_specialization (list_type);
while (slist != NULL)
{
GValue val = {0, };
g_value_init (&val, elt_gtype);
gvalue_from_ptrarray_value (&val, slist->data);
iterator (&val, user_data);
}
}
static void
slist_copy_elt (const GValue *val, gpointer user_data)
{
GSList *dest = user_data;
GValue val_copy = {0, };
g_value_init (&val_copy, G_VALUE_TYPE (val));
g_value_copy (val, &val_copy);
g_slist_append (dest, ptrarray_value_from_gvalue (&val_copy));
}
static gpointer
slist_copy (GType type, gpointer src)
{
GSList *new;
GValue slist_val = {0, };
g_value_init (&slist_val, type);
g_value_set_static_boxed (&slist_val, src);
new = slist_constructor (type);
dbus_g_type_collection_value_iterate (&slist_val, slist_copy_elt, new);
return new;
}
static void
slist_append (DBusGTypeSpecializedAppendContext *ctx, GValue *value)
{
GSList *list;
list = g_value_get_boxed (ctx->val);
list = g_slist_prepend (list, ptrarray_value_from_gvalue (value));
g_value_set_static_boxed (ctx->val, list);
}
static void
slist_end_append (DBusGTypeSpecializedAppendContext *ctx)
{
GSList *list;
list = g_value_get_boxed (ctx->val);
list = g_slist_reverse (list);
g_value_set_static_boxed (ctx->val, list);
}
static void
slist_free (GType type, gpointer val)
{
/* XXX: this function appears to leak the contents of the list */
GSList *list;
list = val;
g_slist_free (list);
}
void
_dbus_g_type_specialized_builtins_init (void)
{
/* types with a simple_free function can be freed at run-time without
* the destroy function needing to know the type, so they can be
* stored in hash tables */
static const DBusGTypeSpecializedCollectionVtable array_vtable = {
{
array_constructor,
NULL,
array_copy,
array_simple_free,
NULL,
NULL,
},
array_fixed_accessor,
NULL,
NULL,
NULL
};
static const DBusGTypeSpecializedCollectionVtable ptrarray_vtable = {
{
ptrarray_constructor,
ptrarray_free,
ptrarray_copy,
NULL,
NULL,
NULL,
},
NULL,
ptrarray_iterator,
ptrarray_append,
NULL,
};
static const DBusGTypeSpecializedCollectionVtable slist_vtable = {
{
slist_constructor,
slist_free,
slist_copy,
NULL,
NULL,
NULL,
},
NULL,
slist_iterator,
slist_append,
slist_end_append,
};
static const DBusGTypeSpecializedMapVtable hashtable_vtable = {
{
hashtable_constructor,
NULL,
hashtable_copy,
hashtable_simple_free,
NULL,
NULL
},
hashtable_iterator,
hashtable_append
};
static const DBusGTypeSpecializedStructVtable valuearray_vtable = {
{
valuearray_constructor,
NULL,
valuearray_copy,
valuearray_simple_free,
NULL,
NULL
},
valuearray_get_member,
valuearray_set_member
};
dbus_g_type_register_collection ("GSList", &slist_vtable, 0);
dbus_g_type_register_collection ("GArray", &array_vtable, 0);
dbus_g_type_register_collection ("GPtrArray", &ptrarray_vtable, 0);
dbus_g_type_register_map ("GHashTable", &hashtable_vtable, 0);
dbus_g_type_register_struct ("GValueArray", &valuearray_vtable, 0);
}
#ifdef DBUS_BUILD_TESTS
typedef struct
{
gboolean seen_foo;
gboolean seen_baz;
} TestSpecializedHashData;
static void
test_specialized_hash (const GValue *key, const GValue *val, gpointer user_data)
{
TestSpecializedHashData *data = user_data;
g_assert (G_VALUE_HOLDS_STRING (key));
g_assert (G_VALUE_HOLDS_STRING (val));
if (!strcmp (g_value_get_string (key), "foo"))
{
data->seen_foo = TRUE;
g_assert (!strcmp (g_value_get_string (val), "bar"));
}
else if (!strcmp (g_value_get_string (key), "baz"))
{
data->seen_baz = TRUE;
g_assert (!strcmp (g_value_get_string (val), "moo"));
}
else
{
g_assert_not_reached ();
}
}
static void
test_specialized_hash_2 (const GValue *key, const GValue *val, gpointer user_data)
{
TestSpecializedHashData *data = user_data;
const GValue *realval;
g_assert (G_VALUE_HOLDS_STRING (key));
g_assert (G_VALUE_TYPE (val) == G_TYPE_VALUE);
realval = g_value_get_boxed (val);
if (!strcmp (g_value_get_string (key), "foo"))
{
data->seen_foo = TRUE;
g_assert (G_VALUE_HOLDS_UINT (realval));
g_assert (g_value_get_uint (realval) == 20);
}
else if (!strcmp (g_value_get_string (key), "baz"))
{
data->seen_baz = TRUE;
g_assert (G_VALUE_HOLDS_STRING (realval));
g_assert (!strcmp ("bar", g_value_get_string (realval)));
}
else
{
g_assert_not_reached ();
}
}
gboolean
_dbus_gvalue_utils_test (const char *datadir)
{
GType type;
dbus_g_type_specialized_init ();
_dbus_g_type_specialized_builtins_init ();
type = dbus_g_type_get_collection ("GArray", G_TYPE_UINT);
g_assert (dbus_g_type_is_collection (type));
g_assert (dbus_g_type_get_collection_specialization (type) == G_TYPE_UINT);
{
GArray *instance;
instance = dbus_g_type_specialized_construct (type);
g_assert (instance->len == 0);
g_array_free (instance, TRUE);
}
type = dbus_g_type_get_map ("GHashTable", G_TYPE_STRING, G_TYPE_STRING);
g_assert (dbus_g_type_is_map (type));
g_assert (dbus_g_type_get_map_key_specialization (type) == G_TYPE_STRING);
g_assert (dbus_g_type_get_map_value_specialization (type) == G_TYPE_STRING);
{
GHashTable *instance;
GValue val = { 0, };
TestSpecializedHashData hashdata;
instance = dbus_g_type_specialized_construct (type);
g_assert (g_hash_table_size (instance) == 0);
g_hash_table_insert (instance, g_strdup ("foo"), g_strdup ("bar"));
g_hash_table_insert (instance, g_strdup ("baz"), g_strdup ("moo"));
g_assert (g_hash_table_size (instance) == 2);
g_value_init (&val, type);
g_value_set_boxed_take_ownership (&val, instance);
hashdata.seen_foo = FALSE;
hashdata.seen_baz = FALSE;
dbus_g_type_map_value_iterate (&val,
test_specialized_hash,
&hashdata);
g_assert (hashdata.seen_foo);
g_assert (hashdata.seen_baz);
g_value_unset (&val);
}
type = dbus_g_type_get_map ("GHashTable", G_TYPE_STRING, G_TYPE_VALUE);
g_assert (dbus_g_type_is_map (type));
g_assert (dbus_g_type_get_map_key_specialization (type) == G_TYPE_STRING);
g_assert (dbus_g_type_get_map_value_specialization (type) == G_TYPE_VALUE);
{
GHashTable *instance;
GValue val = { 0, };
TestSpecializedHashData hashdata;
DBusGTypeSpecializedAppendContext ctx;
GValue *eltval;
instance = dbus_g_type_specialized_construct (type);
g_value_init (&val, type);
g_value_set_boxed_take_ownership (&val, instance);
dbus_g_type_specialized_init_append (&val, &ctx);
{
GValue keyval = { 0, };
GValue valval = { 0, };
g_value_init (&keyval, G_TYPE_STRING);
g_value_set_string (&keyval, "foo");
g_value_init (&valval, G_TYPE_VALUE);
eltval = g_new0 (GValue, 1);
g_value_init (eltval, G_TYPE_UINT);
g_value_set_uint (eltval, 20);
g_value_set_boxed_take_ownership (&valval, eltval);
dbus_g_type_specialized_map_append (&ctx, &keyval, &valval);
}
{
GValue keyval = { 0, };
GValue valval = { 0, };
g_value_init (&keyval, G_TYPE_STRING);
g_value_set_string (&keyval, "baz");
g_value_init (&valval, G_TYPE_VALUE);
eltval = g_new0 (GValue, 1);
g_value_init (eltval, G_TYPE_STRING);
g_value_set_string (eltval, "bar");
g_value_set_boxed_take_ownership (&valval, eltval);
dbus_g_type_specialized_map_append (&ctx, &keyval, &valval);
}
hashdata.seen_foo = FALSE;
hashdata.seen_baz = FALSE;
dbus_g_type_map_value_iterate (&val,
test_specialized_hash_2,
&hashdata);
g_assert (hashdata.seen_foo);
g_assert (hashdata.seen_baz);
g_value_unset (&val);
}
type = dbus_g_type_get_collection ("GPtrArray", G_TYPE_STRING);
g_assert (dbus_g_type_is_collection (type));
g_assert (dbus_g_type_get_collection_specialization (type) == G_TYPE_STRING);
{
GPtrArray *instance;
DBusGTypeSpecializedAppendContext ctx;
GValue val = {0, };
GValue eltval = {0, };
instance = dbus_g_type_specialized_construct (type);
g_assert (instance->len == 0);
g_value_init (&val, type);
g_value_set_boxed_take_ownership (&val, instance);
dbus_g_type_specialized_init_append (&val, &ctx);
g_value_init (&eltval, G_TYPE_STRING);
g_value_set_static_string (&eltval, "foo");
dbus_g_type_specialized_collection_append (&ctx, &eltval);
g_value_reset (&eltval);
g_value_set_static_string (&eltval, "bar");
dbus_g_type_specialized_collection_append (&ctx, &eltval);
g_value_reset (&eltval);
g_value_set_static_string (&eltval, "baz");
dbus_g_type_specialized_collection_append (&ctx, &eltval);
dbus_g_type_specialized_collection_end_append (&ctx);
g_assert (instance->len == 3);
g_assert (!strcmp ("foo", g_ptr_array_index (instance, 0)));
g_assert (!strcmp ("bar", g_ptr_array_index (instance, 1)));
g_assert (!strcmp ("baz", g_ptr_array_index (instance, 2)));
g_value_unset (&val);
}
type = dbus_g_type_get_struct ("GValueArray", G_TYPE_STRING, G_TYPE_UINT, DBUS_TYPE_G_OBJECT_PATH, G_TYPE_INVALID);
g_assert (dbus_g_type_is_struct (type));
g_assert (dbus_g_type_get_struct_size (type) == 3);
g_assert (dbus_g_type_get_struct_member_type (type, 0) == G_TYPE_STRING);
g_assert (dbus_g_type_get_struct_member_type (type, 1) == G_TYPE_UINT);
g_assert (dbus_g_type_get_struct_member_type (type, 2) == DBUS_TYPE_G_OBJECT_PATH);
{
GValueArray *instance;
GValue val = {0, };
GValue memval = {0, };
instance = dbus_g_type_specialized_construct (type);
g_assert (instance->n_values == 3);
g_value_init (&val, type);
g_value_set_boxed_take_ownership (&val, instance);
g_value_init (&memval, G_TYPE_STRING);
g_value_set_static_string (&memval, "foo");
dbus_g_type_struct_set_member (&val, 0, &memval);
g_value_unset (&memval);
g_value_init (&memval, G_TYPE_UINT);
g_value_set_uint (&memval, 42);
dbus_g_type_struct_set_member (&val, 1, &memval);
g_value_unset (&memval);
g_value_init (&memval, DBUS_TYPE_G_OBJECT_PATH);
g_value_set_static_boxed (&memval, "/bar/moo/foo/baz");
dbus_g_type_struct_set_member (&val, 2, &memval);
g_value_unset (&memval);
g_assert (instance->n_values == 3);
g_value_init (&memval, G_TYPE_STRING);
dbus_g_type_struct_get_member (&val, 0, &memval);
g_assert (0 == strcmp (g_value_get_string (&memval), "foo"));
g_value_unset (&memval);
g_value_init (&memval, G_TYPE_UINT);
dbus_g_type_struct_get_member (&val, 1, &memval);
g_assert (g_value_get_uint (&memval) == 42);
g_value_unset (&memval);
g_value_init (&memval, DBUS_TYPE_G_OBJECT_PATH);
dbus_g_type_struct_get_member (&val, 2, &memval);
g_assert (0 == strcmp ((gchar*) g_value_get_boxed (&memval),
"/bar/moo/foo/baz"));
g_value_unset (&memval);
g_value_unset (&val);
}
type = dbus_g_type_get_struct ("GValueArray", G_TYPE_STRING, G_TYPE_UINT, DBUS_TYPE_G_OBJECT_PATH, G_TYPE_INVALID);
g_assert (dbus_g_type_is_struct (type));
g_assert (dbus_g_type_get_struct_size (type) == 3);
g_assert (dbus_g_type_get_struct_member_type (type, 0) == G_TYPE_STRING);
g_assert (dbus_g_type_get_struct_member_type (type, 1) == G_TYPE_UINT);
g_assert (dbus_g_type_get_struct_member_type (type, 2) == DBUS_TYPE_G_OBJECT_PATH);
{
GValueArray *instance;
GValue val = {0, };
instance = dbus_g_type_specialized_construct (type);
g_assert (instance->n_values == 3);
g_value_init (&val, type);
g_value_set_boxed_take_ownership (&val, instance);
dbus_g_type_struct_set (&val,
0,"foo",
1, 42,
2, "/bar/moo/foo/baz",
G_MAXUINT);
g_assert (instance->n_values == 3);
{
gchar *string;
guint intval;
gchar *path;
dbus_g_type_struct_get (&val,
0, &string,
1, &intval,
2, &path,
G_MAXUINT);
g_assert (0 == strcmp (string, "foo"));
g_assert (intval == 42);
g_assert (0 == strcmp (path, "/bar/moo/foo/baz"));
}
g_value_unset (&val);
}
return TRUE;
}
#endif /* DBUS_BUILD_TESTS */
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