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/* GObject - GLib Type, Object, Parameter and Signal Library
* Copyright (C) 2001, 2003 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.
*/
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "TestIfaceInherit"
#undef G_DISABLE_ASSERT
#undef G_DISABLE_CHECKS
#undef G_DISABLE_CAST_CHECKS
#include <glib-object.h>
#include "testcommon.h"
#include "testmodule.h"
/* This test tests inheritance of interface. We two object
* class BaseObject and DerivedObject we add an interface
* to BaseObject:
*
* I1) Before DerivedObject is registered
* I2) After DerivedObject is registered, but before
* DerivedObject is class initialized
* I3) During DerivedObject's class_init
* I4) After DerivedObject's class init
*
* We also do some tests of overriding.
*
* I5) We add an interface to BaseObject, then add the same
* interface to DerivedObject. (Note that this is only legal
* before DerivedObject's class_init; the results of
* g_type_interface_peek() are not allowed to change from one
* non-NULL vtable to another non-NULL vtable)
*/
/*
* BaseObject, a parent class for DerivedObject
*/
#define BASE_TYPE_OBJECT (base_object_get_type ())
typedef struct _BaseObject BaseObject;
typedef struct _BaseObjectClass BaseObjectClass;
struct _BaseObject
{
GObject parent_instance;
};
struct _BaseObjectClass
{
GObjectClass parent_class;
};
static GType base_object_get_type ();
static GType derived_object_get_type ();
/*
* DerivedObject, the child class of DerivedObject
*/
#define DERIVED_TYPE_OBJECT (derived_object_get_type ())
typedef struct _DerivedObject DerivedObject;
typedef struct _DerivedObjectClass DerivedObjectClass;
struct _DerivedObject
{
BaseObject parent_instance;
};
struct _DerivedObjectClass
{
BaseObjectClass parent_class;
};
/*
* The interfaces
*/
typedef struct _TestIfaceClass TestIfaceClass;
typedef struct _TestIfaceClass TestIface1Class;
typedef struct _TestIfaceClass TestIface2Class;
typedef struct _TestIfaceClass TestIface3Class;
typedef struct _TestIfaceClass TestIface4Class;
typedef struct _TestIfaceClass TestIface5Class;
struct _TestIfaceClass
{
GTypeInterface base_iface;
guint val;
};
#define TEST_TYPE_IFACE1 (test_iface1_get_type ())
#define TEST_TYPE_IFACE2 (test_iface2_get_type ())
#define TEST_TYPE_IFACE3 (test_iface3_get_type ())
#define TEST_TYPE_IFACE4 (test_iface4_get_type ())
#define TEST_TYPE_IFACE5 (test_iface5_get_type ())
static DEFINE_IFACE (TestIface1, test_iface1, NULL, NULL)
static DEFINE_IFACE (TestIface2, test_iface2, NULL, NULL)
static DEFINE_IFACE (TestIface3, test_iface3, NULL, NULL)
static DEFINE_IFACE (TestIface4, test_iface4, NULL, NULL)
static DEFINE_IFACE (TestIface5, test_iface5, NULL, NULL)
static void
add_interface (GType object_type,
GType iface_type,
GInterfaceInitFunc init_func)
{
GInterfaceInfo iface_info = { NULL, NULL, NULL };
iface_info.interface_init = init_func;
g_type_add_interface_static (object_type, iface_type, &iface_info);
}
static void
init_base_interface (TestIfaceClass *iface)
{
iface->val = 21;
}
static void
add_base_interface (GType object_type,
GType iface_type)
{
add_interface (object_type, iface_type,
(GInterfaceInitFunc)init_base_interface);
}
static gboolean
interface_is_base (GType object_type,
GType iface_type)
{
gpointer g_class = g_type_class_peek (object_type);
TestIfaceClass *iface = g_type_interface_peek (g_class, iface_type);
return iface && iface->val == 21;
}
static void
init_derived_interface (TestIfaceClass *iface)
{
iface->val = 42;
}
static void
add_derived_interface (GType object_type,
GType iface_type)
{
add_interface (object_type, iface_type,
(GInterfaceInitFunc)init_derived_interface);
}
static gboolean
interface_is_derived (GType object_type,
GType iface_type)
{
gpointer g_class = g_type_class_peek (object_type);
TestIfaceClass *iface = g_type_interface_peek (g_class, iface_type);
return iface && iface->val == 42;
}
static void
derived_object_class_init (BaseObjectClass *class)
{
add_base_interface (BASE_TYPE_OBJECT, TEST_TYPE_IFACE3);
}
static DEFINE_TYPE(BaseObject, base_object,
NULL, NULL, NULL,
G_TYPE_OBJECT)
static DEFINE_TYPE(DerivedObject, derived_object,
derived_object_class_init, NULL, NULL,
BASE_TYPE_OBJECT)
int
main (int argc,
char *argv[])
{
g_log_set_always_fatal (g_log_set_always_fatal (G_LOG_FATAL_MASK) |
G_LOG_LEVEL_WARNING |
G_LOG_LEVEL_CRITICAL);
g_type_init ();
/* Register BaseObject */
BASE_TYPE_OBJECT;
add_base_interface (BASE_TYPE_OBJECT, TEST_TYPE_IFACE5);
/* Class init BaseObject */
g_type_class_ref (BASE_TYPE_OBJECT);
add_base_interface (BASE_TYPE_OBJECT, TEST_TYPE_IFACE1);
/* Register DerivedObject */
DERIVED_TYPE_OBJECT;
add_base_interface (BASE_TYPE_OBJECT, TEST_TYPE_IFACE2);
add_derived_interface (DERIVED_TYPE_OBJECT, TEST_TYPE_IFACE5);
/* Class init DerivedObject */
g_type_class_ref (DERIVED_TYPE_OBJECT);
add_base_interface (BASE_TYPE_OBJECT, TEST_TYPE_IFACE4);
/* Check that all the non-overridden interfaces were properly inherited
*/
g_assert (interface_is_base (DERIVED_TYPE_OBJECT, TEST_TYPE_IFACE1));
g_assert (interface_is_base (DERIVED_TYPE_OBJECT, TEST_TYPE_IFACE2));
g_assert (interface_is_base (DERIVED_TYPE_OBJECT, TEST_TYPE_IFACE3));
g_assert (interface_is_base (DERIVED_TYPE_OBJECT, TEST_TYPE_IFACE4));
/* Check that all the overridden interfaces were properly overridden
*/
g_assert (interface_is_derived (DERIVED_TYPE_OBJECT, TEST_TYPE_IFACE5));
return 0;
}
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