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glib/gobject/gtype.h
Tim Janik dc0b74d416 got rid of g_set_error_handler(), g_set_warning_handler(), 
Mon Sep 10 17:13:36 2001  Tim Janik  <timj@gtk.org>

        * glib/gmessages.h: got rid of g_set_error_handler(),
        g_set_warning_handler(), g_set_message_handler().

Wed Sep  5 05:24:07 2001  Tim Janik  <timj@gtk.org>

        * gobject/tmpl/gboxed.sgml: documented some functions.

        * gobject/tmpl/objects.sgml: some fixups.

Mon Sep 10 19:27:47 2001  Tim Janik  <timj@gtk.org>

        * gtype.[hc]:
        g_type_add_interface*(): implement the ability to add an interface to
        a type whose parents already conform to this interface.
        such "overriding" interfaces, when initialized, are not just initialized
        with 0, but with a copy of the interface they override.
        g_type_interface_peek_parent(): new function, return the interface
        that this interface "overrides", if any.

        * testgruntime.c: test new interface stuff.
2001-09-10 18:03:31 +00:00

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/* GObject - GLib Type, Object, Parameter and Signal Library
* Copyright (C) 1998-1999, 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.
*/
#ifndef __G_TYPE_H__
#define __G_TYPE_H__
extern const char *g_log_domain_gruntime;
#include <glib.h>
G_BEGIN_DECLS
/* Basic Type Macros
*/
#define G_TYPE_FUNDAMENTAL(type) ((type) & 0xff)
#define G_TYPE_FUNDAMENTAL_MAX (0xff)
#define G_TYPE_DERIVE_ID(ptype, branch_seqno) (G_TYPE_FUNDAMENTAL (ptype) | ((branch_seqno) << 8))
#define G_TYPE_BRANCH_SEQNO(type) ((type) >> 8)
#define G_TYPE_FUNDAMENTAL_LAST ((GType) g_type_fundamental_last ())
/* predefined fundamental and derived types
*/
typedef enum /*< skip >*/
{
/* standard types, introduced by g_type_init() */
G_TYPE_INVALID,
G_TYPE_NONE,
G_TYPE_INTERFACE,
/* GLib type ids */
G_TYPE_CHAR,
G_TYPE_UCHAR,
G_TYPE_BOOLEAN,
G_TYPE_INT,
G_TYPE_UINT,
G_TYPE_LONG,
G_TYPE_ULONG,
G_TYPE_ENUM,
G_TYPE_FLAGS,
G_TYPE_FLOAT,
G_TYPE_DOUBLE,
G_TYPE_STRING,
G_TYPE_POINTER,
G_TYPE_BOXED,
G_TYPE_PARAM,
G_TYPE_OBJECT,
/* reserved fundamental type ids,
* mail gtk-devel-list@redhat.com for reservations
*/
G_TYPE_RESERVED_BSE_FIRST,
G_TYPE_RESERVED_BSE_LAST = G_TYPE_RESERVED_BSE_FIRST + 15,
G_TYPE_RESERVED_LAST_FUNDAMENTAL,
/* derived type ids */
G_TYPE_CLOSURE = G_TYPE_DERIVE_ID (G_TYPE_BOXED, 1),
G_TYPE_VALUE = G_TYPE_DERIVE_ID (G_TYPE_BOXED, 2),
G_TYPE_VALUE_ARRAY = G_TYPE_DERIVE_ID (G_TYPE_BOXED, 3),
G_TYPE_GSTRING = G_TYPE_DERIVE_ID (G_TYPE_BOXED, 4),
G_TYPE_PARAM_CHAR = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 1),
G_TYPE_PARAM_UCHAR = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 2),
G_TYPE_PARAM_BOOLEAN = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 3),
G_TYPE_PARAM_INT = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 4),
G_TYPE_PARAM_UINT = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 5),
G_TYPE_PARAM_LONG = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 6),
G_TYPE_PARAM_ULONG = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 7),
G_TYPE_PARAM_UNICHAR = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 8),
G_TYPE_PARAM_ENUM = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 9),
G_TYPE_PARAM_FLAGS = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 10),
G_TYPE_PARAM_FLOAT = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 11),
G_TYPE_PARAM_DOUBLE = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 12),
G_TYPE_PARAM_STRING = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 13),
G_TYPE_PARAM_PARAM = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 14),
G_TYPE_PARAM_BOXED = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 15),
G_TYPE_PARAM_POINTER = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 16),
G_TYPE_PARAM_VALUE_ARRAY = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 17),
G_TYPE_PARAM_CLOSURE = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 18),
G_TYPE_PARAM_OBJECT = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 19)
} GTypeFundamentals;
/* Type Checking Macros
*/
#define G_TYPE_IS_FUNDAMENTAL(type) (G_TYPE_BRANCH_SEQNO (type) == 0)
#define G_TYPE_IS_DERIVED(type) (G_TYPE_BRANCH_SEQNO (type) > 0)
#define G_TYPE_IS_INTERFACE(type) (G_TYPE_FUNDAMENTAL (type) == G_TYPE_INTERFACE)
#define G_TYPE_IS_CLASSED(type) (g_type_check_flags ((type), G_TYPE_FLAG_CLASSED))
#define G_TYPE_IS_INSTANTIATABLE(type) (g_type_check_flags ((type), G_TYPE_FLAG_INSTANTIATABLE))
#define G_TYPE_IS_DERIVABLE(type) (g_type_check_flags ((type), G_TYPE_FLAG_DERIVABLE))
#define G_TYPE_IS_DEEP_DERIVABLE(type) (g_type_check_flags ((type), G_TYPE_FLAG_DEEP_DERIVABLE))
#define G_TYPE_IS_ABSTRACT(type) (g_type_check_flags ((type), G_TYPE_FLAG_ABSTRACT))
#define G_TYPE_IS_VALUE_ABSTRACT(type) (g_type_check_flags ((type), G_TYPE_FLAG_VALUE_ABSTRACT))
#define G_TYPE_IS_PARAM(type) (G_TYPE_FUNDAMENTAL (type) == G_TYPE_PARAM)
#define G_TYPE_IS_VALUE_TYPE(type) (g_type_check_is_value_type (type))
#define G_TYPE_HAS_VALUE_TABLE(type) (g_type_value_table_peek (type) != NULL)
/* Typedefs
*/
typedef guint32 GType;
typedef struct _GValue GValue;
typedef union _GTypeCValue GTypeCValue;
typedef struct _GTypePlugin GTypePlugin;
typedef struct _GTypeClass GTypeClass;
typedef struct _GTypeInterface GTypeInterface;
typedef struct _GTypeInstance GTypeInstance;
typedef struct _GTypeInfo GTypeInfo;
typedef struct _GTypeFundamentalInfo GTypeFundamentalInfo;
typedef struct _GInterfaceInfo GInterfaceInfo;
typedef struct _GTypeValueTable GTypeValueTable;
typedef struct _GTypeQuery GTypeQuery;
/* Basic Type Structures
*/
struct _GTypeClass
{
/*< private >*/
GType g_type;
};
struct _GTypeInstance
{
/*< private >*/
GTypeClass *g_class;
};
struct _GTypeInterface
{
/*< private >*/
GType g_type; /* iface type */
GType g_instance_type;
};
struct _GTypeQuery
{
GType type;
const gchar *type_name;
guint class_size;
guint instance_size;
};
/* Casts, checks and accessors for structured types
* usage of these macros is reserved to type implementations only
*/
/*< protected >*/
#define G_TYPE_CHECK_INSTANCE(instance) (_G_TYPE_CHI ((GTypeInstance*) (instance)))
#define G_TYPE_CHECK_INSTANCE_CAST(instance, g_type, c_type) (_G_TYPE_CIC ((instance), (g_type), c_type))
#define G_TYPE_CHECK_INSTANCE_TYPE(instance, g_type) (_G_TYPE_CIT ((instance), (g_type)))
#define G_TYPE_INSTANCE_GET_CLASS(instance, g_type, c_type) (_G_TYPE_IGC ((instance), (g_type), c_type))
#define G_TYPE_INSTANCE_GET_INTERFACE(instance, g_type, c_type) (_G_TYPE_IGI ((instance), (g_type), c_type))
#define G_TYPE_CHECK_CLASS_CAST(g_class, g_type, c_type) (_G_TYPE_CCC ((g_class), (g_type), c_type))
#define G_TYPE_CHECK_CLASS_TYPE(g_class, g_type) (_G_TYPE_CCT ((g_class), (g_type)))
#define G_TYPE_CHECK_VALUE(value) (_G_TYPE_CHV ((value)))
#define G_TYPE_CHECK_VALUE_TYPE(value, g_type) (_G_TYPE_CVH ((value), (g_type)))
#define G_TYPE_FROM_INSTANCE(instance) (G_TYPE_FROM_CLASS (((GTypeInstance*) (instance))->g_class))
#define G_TYPE_FROM_CLASS(g_class) (((GTypeClass*) (g_class))->g_type)
#define G_TYPE_FROM_INTERFACE(g_iface) (((GTypeInterface*) (g_iface))->g_type)
/* debug flags for g_type_init_with_debug_flags() */
typedef enum /*< skip >*/
{
G_TYPE_DEBUG_NONE = 0,
G_TYPE_DEBUG_OBJECTS = 1 << 0,
G_TYPE_DEBUG_SIGNALS = 1 << 1,
G_TYPE_DEBUG_MASK = 0x03
} GTypeDebugFlags;
/* --- prototypes --- */
void g_type_init (void);
void g_type_init_with_debug_flags (GTypeDebugFlags debug_flags);
G_CONST_RETURN gchar* g_type_name (GType type);
GQuark g_type_qname (GType type);
GType g_type_from_name (const gchar *name);
GType g_type_parent (GType type);
guint g_type_depth (GType type);
GType g_type_next_base (GType leaf_type,
GType root_type);
gboolean g_type_is_a (GType type,
GType is_a_type);
guint g_type_fundamental_branch_last (GType type);
gpointer g_type_class_ref (GType type);
gpointer g_type_class_peek (GType type);
void g_type_class_unref (gpointer g_class);
gpointer g_type_class_peek_parent (gpointer g_class);
gpointer g_type_interface_peek (gpointer instance_class,
GType iface_type);
gpointer g_type_interface_peek_parent (gpointer g_iface);
/* g_free() the returned arrays */
GType* g_type_children (GType type,
guint *n_children);
GType* g_type_interfaces (GType type,
guint *n_interfaces);
/* per-type _static_ data */
void g_type_set_qdata (GType type,
GQuark quark,
gpointer data);
gpointer g_type_get_qdata (GType type,
GQuark quark);
void g_type_query (GType type,
GTypeQuery *query);
/* --- type registration --- */
typedef void (*GBaseInitFunc) (gpointer g_class);
typedef void (*GBaseFinalizeFunc) (gpointer g_class);
typedef void (*GClassInitFunc) (gpointer g_class,
gpointer class_data);
typedef void (*GClassFinalizeFunc) (gpointer g_class,
gpointer class_data);
typedef void (*GInstanceInitFunc) (GTypeInstance *instance,
gpointer g_class);
typedef void (*GInterfaceInitFunc) (gpointer g_iface,
gpointer iface_data);
typedef void (*GInterfaceFinalizeFunc) (gpointer g_iface,
gpointer iface_data);
typedef gboolean (*GTypeClassCacheFunc) (gpointer cache_data,
GTypeClass *g_class);
typedef enum /*< skip >*/
{
G_TYPE_FLAG_CLASSED = (1 << 0),
G_TYPE_FLAG_INSTANTIATABLE = (1 << 1),
G_TYPE_FLAG_DERIVABLE = (1 << 2),
G_TYPE_FLAG_DEEP_DERIVABLE = (1 << 3)
} GTypeFundamentalFlags;
typedef enum /*< skip >*/
{
G_TYPE_FLAG_ABSTRACT = (1 << 4),
G_TYPE_FLAG_VALUE_ABSTRACT = (1 << 5)
} GTypeFlags;
struct _GTypeInfo
{
/* interface types, classed types, instantiated types */
guint16 class_size;
GBaseInitFunc base_init;
GBaseFinalizeFunc base_finalize;
/* classed types, instantiated types */
GClassInitFunc class_init;
GClassFinalizeFunc class_finalize;
gconstpointer class_data;
/* instantiated types */
guint16 instance_size;
guint16 n_preallocs;
GInstanceInitFunc instance_init;
/* value handling */
const GTypeValueTable *value_table;
};
struct _GTypeFundamentalInfo
{
GTypeFundamentalFlags type_flags;
};
struct _GInterfaceInfo
{
GInterfaceInitFunc interface_init;
GInterfaceFinalizeFunc interface_finalize;
gpointer interface_data;
};
struct _GTypeValueTable
{
void (*value_init) (GValue *value);
void (*value_free) (GValue *value);
void (*value_copy) (const GValue *src_value,
GValue *dest_value);
/* varargs functionality (optional) */
gpointer (*value_peek_pointer) (const GValue *value);
gchar *collect_format;
gchar* (*collect_value) (GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags);
gchar *lcopy_format;
gchar* (*lcopy_value) (const GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags);
};
GType g_type_register_static (GType parent_type,
const gchar *type_name,
const GTypeInfo *info,
GTypeFlags flags);
GType g_type_register_dynamic (GType parent_type,
const gchar *type_name,
GTypePlugin *plugin,
GTypeFlags flags);
GType g_type_register_fundamental (GType type_id,
const gchar *type_name,
const GTypeInfo *info,
const GTypeFundamentalInfo *finfo,
GTypeFlags flags);
void g_type_add_interface_static (GType instance_type,
GType interface_type,
const GInterfaceInfo *info);
void g_type_add_interface_dynamic (GType instance_type,
GType interface_type,
GTypePlugin *plugin);
void g_type_interface_add_prerequisite (GType interface_type,
GType prerequisite_type);
/* --- protected (for fundamental type implementations) --- */
GTypePlugin* g_type_get_plugin (GType type);
GTypePlugin* g_type_interface_get_plugin (GType instance_type,
GType implementation_type);
GType g_type_fundamental_last (void);
gboolean g_type_check_flags (GType type,
guint flags);
GTypeInstance* g_type_create_instance (GType type);
void g_type_free_instance (GTypeInstance *instance);
void g_type_add_class_cache_func (gpointer cache_data,
GTypeClassCacheFunc cache_func);
void g_type_remove_class_cache_func (gpointer cache_data,
GTypeClassCacheFunc cache_func);
void g_type_class_unref_uncached (gpointer g_class);
/*< private >*/
gboolean g_type_check_instance (GTypeInstance *instance);
GTypeInstance* g_type_check_instance_cast (GTypeInstance *instance,
GType iface_type);
gboolean g_type_instance_is_a (GTypeInstance *instance,
GType iface_type);
GTypeClass* g_type_check_class_cast (GTypeClass *g_class,
GType is_a_type);
gboolean g_type_class_is_a (GTypeClass *g_class,
GType is_a_type);
gboolean g_type_check_is_value_type (GType type);
gboolean g_type_check_value (GValue *value);
gboolean g_type_check_value_holds (GValue *value,
GType type);
GTypeValueTable* g_type_value_table_peek (GType type);
/* --- debugging functions --- */
G_CONST_RETURN gchar* g_type_name_from_instance (GTypeInstance *instance);
G_CONST_RETURN gchar* g_type_name_from_class (GTypeClass *g_class);
/* --- implementation bits --- */
#ifndef G_DISABLE_CAST_CHECKS
# define _G_TYPE_CIC(ip, gt, ct) \
((ct*) g_type_check_instance_cast ((GTypeInstance*) ip, gt))
# define _G_TYPE_CCC(cp, gt, ct) \
((ct*) g_type_check_class_cast ((GTypeClass*) cp, gt))
#else /* G_DISABLE_CAST_CHECKS */
# define _G_TYPE_CIC(ip, gt, ct) ((ct*) ip)
# define _G_TYPE_CCC(cp, gt, ct) ((ct*) cp)
#endif /* G_DISABLE_CAST_CHECKS */
#define _G_TYPE_CHI(ip) (g_type_check_instance ((GTypeInstance*) ip))
#define _G_TYPE_CVH(vl, gt) (g_type_check_value_holds ((GValue*) vl, gt))
#define _G_TYPE_CHV(vl) (g_type_check_value ((GValue*) vl))
#define _G_TYPE_IGC(ip, gt, ct) ((ct*) (((GTypeInstance*) ip)->g_class))
#define _G_TYPE_IGI(ip, gt, ct) ((ct*) g_type_interface_peek (((GTypeInstance*) ip)->g_class, gt))
#ifdef __GNUC__
# define _G_TYPE_CIT(ip, gt) ({ \
GTypeInstance *__inst = (GTypeInstance*) ip; GType __t = gt; gboolean __r; \
if (__inst && __inst->g_class && __inst->g_class->g_type == __t) \
__r = TRUE; \
else \
__r = g_type_instance_is_a (__inst, __t); \
__r; \
})
# define _G_TYPE_CCT(cp, gt) ({ \
GTypeClass *__class = (GTypeClass*) cp; GType __t = gt; gboolean __r; \
if (__class && __class->g_type == __t) \
__r = TRUE; \
else \
__r = g_type_class_is_a (__class, __t); \
__r; \
})
#else /* !__GNUC__ */
# define _G_TYPE_CIT(ip, gt) (g_type_instance_is_a ((GTypeInstance*) ip, gt))
# define _G_TYPE_CCT(cp, gt) (g_type_class_is_a ((GTypeClass*) cp, gt))
#endif /* !__GNUC__ */
#define G_TYPE_FLAG_RESERVED_ID_BIT (1 << 30)
extern GTypeDebugFlags _g_type_debug_flags;
G_END_DECLS
#endif /* __G_TYPE_H__ */
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