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glib2.0/gobject/gtypemodule.h

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/* GObject - GLib Type, Object, Parameter and Signal Library
* Copyright (C) 2000 Red Hat, Inc.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* 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 2.1 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __G_TYPE_MODULE_H__
#define __G_TYPE_MODULE_H__
#if !defined (__GLIB_GOBJECT_H_INSIDE__) && !defined (GOBJECT_COMPILATION)
#error "Only <glib-object.h> can be included directly."
#endif
#include <gobject/gobject.h>
#include <gobject/genums.h>
G_BEGIN_DECLS
typedef struct _GTypeModule GTypeModule;
typedef struct _GTypeModuleClass GTypeModuleClass;
#define G_TYPE_TYPE_MODULE (g_type_module_get_type ())
#define G_TYPE_MODULE(module) (G_TYPE_CHECK_INSTANCE_CAST ((module), G_TYPE_TYPE_MODULE, GTypeModule))
#define G_TYPE_MODULE_CLASS(class) (G_TYPE_CHECK_CLASS_CAST ((class), G_TYPE_TYPE_MODULE, GTypeModuleClass))
#define G_IS_TYPE_MODULE(module) (G_TYPE_CHECK_INSTANCE_TYPE ((module), G_TYPE_TYPE_MODULE))
#define G_IS_TYPE_MODULE_CLASS(class) (G_TYPE_CHECK_CLASS_TYPE ((class), G_TYPE_TYPE_MODULE))
#define G_TYPE_MODULE_GET_CLASS(module) (G_TYPE_INSTANCE_GET_CLASS ((module), G_TYPE_TYPE_MODULE, GTypeModuleClass))
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GTypeModule, g_object_unref)
/**
* GTypeModule:
* @name: the name of the module
*
* The members of the GTypeModule structure should not
* be accessed directly, except for the @name field.
*/
struct _GTypeModule
{
GObject parent_instance;
guint use_count;
GSList *type_infos;
GSList *interface_infos;
/*< public >*/
gchar *name;
};
/**
* GTypeModuleClass:
* @parent_class: the parent class
* @load: loads the module and registers one or more types using
* g_type_module_register_type().
* @unload: unloads the module
*
* In order to implement dynamic loading of types based on #GTypeModule,
* the @load and @unload functions in #GTypeModuleClass must be implemented.
*/
struct _GTypeModuleClass
{
GObjectClass parent_class;
/*< public >*/
gboolean (* load) (GTypeModule *module);
void (* unload) (GTypeModule *module);
/*< private >*/
/* Padding for future expansion */
void (*reserved1) (void);
void (*reserved2) (void);
void (*reserved3) (void);
void (*reserved4) (void);
};
/**
* G_DEFINE_DYNAMIC_TYPE:
* @TN: The name of the new type, in Camel case.
* @t_n: The name of the new type, in lowercase, with words
* separated by '_'.
* @T_P: The #GType of the parent type.
*
* A convenience macro for dynamic type implementations, which declares a
* class initialization function, an instance initialization function (see
* #GTypeInfo for information about these) and a static variable named
* `t_n`_parent_class pointing to the parent class.
*
* Furthermore, it defines a `*_get_type()` and a static `*_register_type()`
* functions for use in your `module_init()`.
*
* See G_DEFINE_DYNAMIC_TYPE_EXTENDED() for an example.
*
* Since: 2.14
*/
#define G_DEFINE_DYNAMIC_TYPE(TN, t_n, T_P) G_DEFINE_DYNAMIC_TYPE_EXTENDED (TN, t_n, T_P, 0, {})
/**
* G_DEFINE_DYNAMIC_TYPE_EXTENDED:
* @TypeName: The name of the new type, in Camel case.
* @type_name: The name of the new type, in lowercase, with words
* separated by '_'.
* @TYPE_PARENT: The #GType of the parent type.
* @flags: #GTypeFlags to pass to g_type_module_register_type()
* @CODE: Custom code that gets inserted in the *_get_type() function.
*
* A more general version of G_DEFINE_DYNAMIC_TYPE() which
* allows to specify #GTypeFlags and custom code.
*
* |[<!-- language="C" -->
* G_DEFINE_DYNAMIC_TYPE_EXTENDED (GtkGadget,
* gtk_gadget,
* GTK_TYPE_THING,
* 0,
* G_IMPLEMENT_INTERFACE_DYNAMIC (TYPE_GIZMO,
* gtk_gadget_gizmo_init));
* ]|
*
* expands to
*
* |[<!-- language="C" -->
* static void gtk_gadget_init (GtkGadget *self);
* static void gtk_gadget_class_init (GtkGadgetClass *klass);
* static void gtk_gadget_class_finalize (GtkGadgetClass *klass);
*
* static gpointer gtk_gadget_parent_class = NULL;
* static GType gtk_gadget_type_id = 0;
*
* static void gtk_gadget_class_intern_init (gpointer klass)
* {
* gtk_gadget_parent_class = g_type_class_peek_parent (klass);
* gtk_gadget_class_init ((GtkGadgetClass*) klass);
* }
*
* GType
* gtk_gadget_get_type (void)
* {
* return gtk_gadget_type_id;
* }
*
* static void
* gtk_gadget_register_type (GTypeModule *type_module)
* {
* const GTypeInfo g_define_type_info = {
* sizeof (GtkGadgetClass),
* (GBaseInitFunc) NULL,
* (GBaseFinalizeFunc) NULL,
* (GClassInitFunc) gtk_gadget_class_intern_init,
* (GClassFinalizeFunc) gtk_gadget_class_finalize,
* NULL, // class_data
* sizeof (GtkGadget),
* 0, // n_preallocs
* (GInstanceInitFunc) gtk_gadget_init,
* NULL // value_table
* };
* gtk_gadget_type_id = g_type_module_register_type (type_module,
* GTK_TYPE_THING,
* "GtkGadget",
* &g_define_type_info,
* (GTypeFlags) flags);
* {
* const GInterfaceInfo g_implement_interface_info = {
* (GInterfaceInitFunc) gtk_gadget_gizmo_init
* };
* g_type_module_add_interface (type_module, g_define_type_id, TYPE_GIZMO, &g_implement_interface_info);
* }
* }
* ]|
*
* Since: 2.14
*/
#define G_DEFINE_DYNAMIC_TYPE_EXTENDED(TypeName, type_name, TYPE_PARENT, flags, CODE) \
static void type_name##_init (TypeName *self); \
static void type_name##_class_init (TypeName##Class *klass); \
static void type_name##_class_finalize (TypeName##Class *klass); \
static gpointer type_name##_parent_class = NULL; \
static GType type_name##_type_id = 0; \
static gint TypeName##_private_offset; \
\
_G_DEFINE_TYPE_EXTENDED_CLASS_INIT(TypeName, type_name) \
\
G_GNUC_UNUSED \
static inline gpointer \
type_name##_get_instance_private (TypeName *self) \
{ \
return (G_STRUCT_MEMBER_P (self, TypeName##_private_offset)); \
} \
\
GType \
type_name##_get_type (void) \
{ \
return type_name##_type_id; \
} \
static void \
type_name##_register_type (GTypeModule *type_module) \
{ \
GType g_define_type_id G_GNUC_UNUSED; \
const GTypeInfo g_define_type_info = { \
sizeof (TypeName##Class), \
(GBaseInitFunc) NULL, \
(GBaseFinalizeFunc) NULL, \
(GClassInitFunc)(void (*)(void)) type_name##_class_intern_init, \
(GClassFinalizeFunc)(void (*)(void)) type_name##_class_finalize, \
NULL, /* class_data */ \
sizeof (TypeName), \
0, /* n_preallocs */ \
(GInstanceInitFunc)(void (*)(void)) type_name##_init, \
NULL /* value_table */ \
}; \
type_name##_type_id = g_type_module_register_type (type_module, \
TYPE_PARENT, \
#TypeName, \
&g_define_type_info, \
(GTypeFlags) flags); \
g_define_type_id = type_name##_type_id; \
{ CODE ; } \
}
/**
* G_IMPLEMENT_INTERFACE_DYNAMIC:
* @TYPE_IFACE: The #GType of the interface to add
* @iface_init: The interface init function
*
* A convenience macro to ease interface addition in the @_C_ section
* of G_DEFINE_DYNAMIC_TYPE_EXTENDED().
*
* See G_DEFINE_DYNAMIC_TYPE_EXTENDED() for an example.
*
* Note that this macro can only be used together with the
* G_DEFINE_DYNAMIC_TYPE_EXTENDED macros, since it depends on variable
* names from that macro.
*
* Since: 2.24
*/
#define G_IMPLEMENT_INTERFACE_DYNAMIC(TYPE_IFACE, iface_init) { \
const GInterfaceInfo g_implement_interface_info = { \
(GInterfaceInitFunc)(void (*)(void)) iface_init, NULL, NULL \
}; \
g_type_module_add_interface (type_module, g_define_type_id, TYPE_IFACE, &g_implement_interface_info); \
}
/**
* G_ADD_PRIVATE_DYNAMIC:
* @TypeName: the name of the type in CamelCase
*
* A convenience macro to ease adding private data to instances of a new dynamic
* type in the @_C_ section of G_DEFINE_DYNAMIC_TYPE_EXTENDED().
*
* See G_ADD_PRIVATE() for details, it is similar but for static types.
*
* Note that this macro can only be used together with the
* G_DEFINE_DYNAMIC_TYPE_EXTENDED macros, since it depends on variable
* names from that macro.
*
* Since: 2.38
*/
#define G_ADD_PRIVATE_DYNAMIC(TypeName) { \
TypeName##_private_offset = sizeof (TypeName##Private); \
}
GOBJECT_AVAILABLE_IN_ALL
GType g_type_module_get_type (void) G_GNUC_CONST;
GOBJECT_AVAILABLE_IN_ALL
gboolean g_type_module_use (GTypeModule *module);
GOBJECT_AVAILABLE_IN_ALL
void g_type_module_unuse (GTypeModule *module);
GOBJECT_AVAILABLE_IN_ALL
void g_type_module_set_name (GTypeModule *module,
const gchar *name);
GOBJECT_AVAILABLE_IN_ALL
GType g_type_module_register_type (GTypeModule *module,
GType parent_type,
const gchar *type_name,
const GTypeInfo *type_info,
GTypeFlags flags);
GOBJECT_AVAILABLE_IN_ALL
void g_type_module_add_interface (GTypeModule *module,
GType instance_type,
GType interface_type,
const GInterfaceInfo *interface_info);
GOBJECT_AVAILABLE_IN_ALL
GType g_type_module_register_enum (GTypeModule *module,
const gchar *name,
const GEnumValue *const_static_values);
GOBJECT_AVAILABLE_IN_ALL
GType g_type_module_register_flags (GTypeModule *module,
const gchar *name,
const GFlagsValue *const_static_values);
G_END_DECLS
#endif /* __G_TYPE_MODULE_H__ */
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