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e773d7dba6
glib/gobject/gtype.h
Tim Janik e773d7dba6 fixed dealing with collection/lcopy of NULL values. 
Mon Dec 11 04:44:11 2000  Tim Janik  <timj@gtk.org>

	* gboxed.c: fixed dealing with collection/lcopy of NULL values.

	* gclosure.h: removed insane ramblings, added G_CALLBACK() a casting
	convenience macro.

	* Makefile.am: cleanups, marshaller generation rules.

	* gmarshal.[hc]: new files with GRuntime standard marshallers.

	* glib-genmarshal.c: fix log domain, support gruntime standard
	marshallers, suport G_TYPE_PARAM, come with extern "C" and
	#include gmarshal.h.

	* glib-genmarshal.1: reflect glib-genmarshal.c updates.

	* gobject.[hc]: implement object constructor. rework parameter
	changed notification queueing, we support queue freezes now and
	don't dispatch from an idle handler anymore.
	parameter->property rename hassle.
	implemented ::properties_changed and ::notify::* signals for
	property change notification (the later supports property names
	as details). added signal connection and named data properties.
	(g_signal_connect_object): new function to setup while_alive
	connections.
	(g_object_class_install_property): sink properties now, since they
	are initially floating.
	(g_object_steal_data):
	(g_object_set_data_full):
	(g_object_set_data):
	(g_object_get_data): set/get data by using g_datalist_*() functions
	directly.
	(g_object_queue_param_changed): nuked.
	(g_object_freeze_notify): start queueing of property changes (freeze/
	thaw calls stack).
	(g_object_notify): announce changes of a certain property directly.
	(g_object_thaw_notify): process queue of property changes, therefore
	emitting GObject::notify::detail with detail being the changed
	properties names.
	(G_OBJECT_WARN_INVALID_PROPERTY_ID): saner macro variant of former
	G_WARN_INVALID_PARAM_ID().

	* gparam.[hc]: param specs are now initially floating and need to be
	sunken with g_param_spec_sink(), support G_TYPE_PARAM values.
	added G_PARAM_CONSTRUCT and G_PARAM_CONSTRUCT_ONLY parameter flags,
	required by GObjectClass.constructor().

	* gparamspecs.[hc]: added GParamSpecParam, GParamSpecPointer and
	GParamSpecCCallback, param specs for G_TYPE_PARAM, G_TYPE_POINTER
	and G_TYPE_CCALLBACK respectively.

	* gsignal.[hc]: cleanups.
	(signal_id_lookup): after walking the anchestry, try interfaces as well.
	(g_signal_new): new function to create signals from varargs type list.
	(g_signal_connect_closure): closure connection variant that works from
	signal name+detail.
	(g_signal_connect_data): c handler connection variant that works from
	signal name+detail.
	(g_signal_emit_valist): emit signal for an instance with paraneters
	collected from a va_list.
	(g_signal_emit): emit signal, taking parameters from varargs list.
	(g_signal_emit_by_name): same as g_signal_emit, working from
	signal name+detail.
	(signal_emit_R): return whether return_value needs to be altered.

	* gtype.[hc]: set log-domain to GRuntime, i'm slowly getting to all
	the points that need to reflect the upcoming rename.
	melt g_type_conforms_to() functionality into g_type_is_a(), as that
	is what we really want (liskov substitution principle).
	assorted changes to other files due to conforms_to->is_a.

	* gvalue.[hc]: implemented g_value_set_instance() that sets a value
	from an instantiatable type via the value_table's collect_value()
	function (based on an idea from James Henstridge <james@daa.com.au>).
	cleanups/fixes.

	* gvaluetypes.[hc]: implement G_TYPE_CCALLBACK and G_TYPE_PARAM.
2000-12-12 07:32:00 +00:00

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/* GObject - GLib Type, Object, Parameter and Signal Library
* Copyright (C) 1998, 1999, 2000 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>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/* 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_PARAM,
G_TYPE_BOXED,
G_TYPE_POINTER,
G_TYPE_CCALLBACK,
G_TYPE_OBJECT,
/* the following reserved ids should vanish soon */
G_TYPE_GTK_SIGNAL,
/* reserved fundamental type ids,
* mail gtk-devel-list@redhat.com for reservations
*/
G_TYPE_BSE_PROCEDURE,
G_TYPE_BSE_TIME,
G_TYPE_BSE_NOTE,
G_TYPE_BSE_DOTS,
G_TYPE_GLE_GOBJECT,
G_TYPE_LAST_RESERVED_FUNDAMENTAL,
/* derived type ids */
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_ENUM = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 8),
G_TYPE_PARAM_FLAGS = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 9),
G_TYPE_PARAM_FLOAT = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 10),
G_TYPE_PARAM_DOUBLE = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 11),
G_TYPE_PARAM_STRING = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 12),
G_TYPE_PARAM_PARAM = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 13),
G_TYPE_PARAM_POINTER = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 14),
G_TYPE_PARAM_CCALLBACK = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 15),
G_TYPE_PARAM_OBJECT = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 16)
} GTypeFundamentals;
/* Type Checking Macros
*/
#define G_TYPE_IS_FUNDAMENTAL(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_PARAM(type) (G_TYPE_FUNDAMENTAL (type) == G_TYPE_PARAM)
#define G_TYPE_IS_VALUE_TYPE(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;
/* 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;
};
/* 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_CVT ((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)
/* --- prototypes --- */
void g_type_init (void);
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);
GType g_type_next_base (GType type,
GType base_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);
/* 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);
/* --- 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)
} 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);
guint collect_type;
gchar* (*collect_value) (GValue *value,
guint nth_value,
GType *collect_type,
GTypeCValue *collect_value);
guint lcopy_type;
gchar* (*lcopy_value) (const GValue *value,
guint nth_value,
GType *collect_type,
GTypeCValue *collect_value);
};
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);
/* --- 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 >*/
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);
GTypeInstance* g_type_check_instance_cast (GTypeInstance *instance,
GType iface_type);
gboolean g_type_instance_is_a (GTypeInstance *instance,
GType iface_type);
gboolean g_type_check_value (GValue *value);
gboolean g_type_value_is_a (GValue *value,
GType type);
gboolean g_type_check_instance (GTypeInstance *instance);
GTypeValueTable* g_type_value_table_peek (GType type);
#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_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))
#define _G_TYPE_CVT(vl, gt) (g_type_value_is_a ((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 __cplusplus
}
#endif /* __cplusplus */
#endif /* __G_TYPE_H__ */
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