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a80fc07f32
Wed Jul 18 19:42:31 2001 Tim Janik <timj@gtk.org> * gtype.h: if __GNUC__ is defined, inline a test for an exact type match for instances and classes in G_TYPE_CHECK_INSTANCE_TYPE() and G_TYPE_CHECK_CLASS_TYPE() before calling g_type_instance_is_a().
401 lines
16 KiB
C
401 lines
16 KiB
C
/* GObject - GLib Type, Object, Parameter and Signal Library
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* Copyright (C) 1998-1999, 2000-2001 Tim Janik and Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __G_TYPE_H__
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#define __G_TYPE_H__
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extern const char *g_log_domain_gruntime;
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#include <glib.h>
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G_BEGIN_DECLS
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/* Basic Type Macros
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*/
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#define G_TYPE_FUNDAMENTAL(type) ((type) & 0xff)
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#define G_TYPE_FUNDAMENTAL_MAX (0xff)
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#define G_TYPE_DERIVE_ID(ptype, branch_seqno) (G_TYPE_FUNDAMENTAL (ptype) | ((branch_seqno) << 8))
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#define G_TYPE_BRANCH_SEQNO(type) ((type) >> 8)
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#define G_TYPE_FUNDAMENTAL_LAST ((GType) g_type_fundamental_last ())
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/* predefined fundamental and derived types
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*/
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typedef enum /*< skip >*/
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{
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/* standard types, introduced by g_type_init() */
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G_TYPE_INVALID,
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G_TYPE_NONE,
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G_TYPE_INTERFACE,
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/* GLib type ids */
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G_TYPE_CHAR,
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G_TYPE_UCHAR,
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G_TYPE_BOOLEAN,
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G_TYPE_INT,
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G_TYPE_UINT,
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G_TYPE_LONG,
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G_TYPE_ULONG,
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G_TYPE_ENUM,
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G_TYPE_FLAGS,
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G_TYPE_FLOAT,
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G_TYPE_DOUBLE,
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G_TYPE_STRING,
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G_TYPE_POINTER,
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G_TYPE_BOXED,
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G_TYPE_PARAM,
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G_TYPE_OBJECT,
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/* reserved fundamental type ids,
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* mail gtk-devel-list@redhat.com for reservations
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*/
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G_TYPE_RESERVED_BSE_FIRST,
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G_TYPE_RESERVED_BSE_LAST = G_TYPE_RESERVED_BSE_FIRST + 15,
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G_TYPE_RESERVED_LAST_FUNDAMENTAL,
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/* derived type ids */
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G_TYPE_CLOSURE = G_TYPE_DERIVE_ID (G_TYPE_BOXED, 1),
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G_TYPE_VALUE = G_TYPE_DERIVE_ID (G_TYPE_BOXED, 2),
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G_TYPE_VALUE_ARRAY = G_TYPE_DERIVE_ID (G_TYPE_BOXED, 3),
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G_TYPE_GSTRING = G_TYPE_DERIVE_ID (G_TYPE_BOXED, 4),
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G_TYPE_PARAM_CHAR = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 1),
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G_TYPE_PARAM_UCHAR = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 2),
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G_TYPE_PARAM_BOOLEAN = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 3),
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G_TYPE_PARAM_INT = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 4),
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G_TYPE_PARAM_UINT = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 5),
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G_TYPE_PARAM_LONG = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 6),
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G_TYPE_PARAM_ULONG = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 7),
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G_TYPE_PARAM_UNICHAR = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 8),
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G_TYPE_PARAM_ENUM = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 9),
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G_TYPE_PARAM_FLAGS = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 10),
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G_TYPE_PARAM_FLOAT = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 11),
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G_TYPE_PARAM_DOUBLE = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 12),
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G_TYPE_PARAM_STRING = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 13),
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G_TYPE_PARAM_PARAM = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 14),
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G_TYPE_PARAM_BOXED = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 15),
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G_TYPE_PARAM_POINTER = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 16),
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G_TYPE_PARAM_VALUE_ARRAY = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 17),
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G_TYPE_PARAM_CLOSURE = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 18),
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G_TYPE_PARAM_OBJECT = G_TYPE_DERIVE_ID (G_TYPE_PARAM, 19)
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} GTypeFundamentals;
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/* Type Checking Macros
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*/
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#define G_TYPE_IS_FUNDAMENTAL(type) (G_TYPE_BRANCH_SEQNO (type) == 0)
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#define G_TYPE_IS_DERIVED(type) (G_TYPE_BRANCH_SEQNO (type) > 0)
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#define G_TYPE_IS_INTERFACE(type) (G_TYPE_FUNDAMENTAL (type) == G_TYPE_INTERFACE)
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#define G_TYPE_IS_CLASSED(type) (g_type_check_flags ((type), G_TYPE_FLAG_CLASSED))
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#define G_TYPE_IS_INSTANTIATABLE(type) (g_type_check_flags ((type), G_TYPE_FLAG_INSTANTIATABLE))
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#define G_TYPE_IS_DERIVABLE(type) (g_type_check_flags ((type), G_TYPE_FLAG_DERIVABLE))
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#define G_TYPE_IS_DEEP_DERIVABLE(type) (g_type_check_flags ((type), G_TYPE_FLAG_DEEP_DERIVABLE))
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#define G_TYPE_IS_ABSTRACT(type) (g_type_check_flags ((type), G_TYPE_FLAG_ABSTRACT))
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#define G_TYPE_IS_VALUE_ABSTRACT(type) (g_type_check_flags ((type), G_TYPE_FLAG_VALUE_ABSTRACT))
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#define G_TYPE_IS_PARAM(type) (G_TYPE_FUNDAMENTAL (type) == G_TYPE_PARAM)
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#define G_TYPE_IS_VALUE_TYPE(type) (g_type_check_is_value_type (type))
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#define G_TYPE_HAS_VALUE_TABLE(type) (g_type_value_table_peek (type) != NULL)
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/* Typedefs
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*/
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typedef guint32 GType;
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typedef struct _GValue GValue;
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typedef union _GTypeCValue GTypeCValue;
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typedef struct _GTypePlugin GTypePlugin;
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typedef struct _GTypeClass GTypeClass;
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typedef struct _GTypeInterface GTypeInterface;
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typedef struct _GTypeInstance GTypeInstance;
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typedef struct _GTypeInfo GTypeInfo;
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typedef struct _GTypeFundamentalInfo GTypeFundamentalInfo;
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typedef struct _GInterfaceInfo GInterfaceInfo;
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typedef struct _GTypeValueTable GTypeValueTable;
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typedef struct _GTypeQuery GTypeQuery;
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/* Basic Type Structures
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*/
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struct _GTypeClass
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{
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/*< private >*/
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GType g_type;
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};
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struct _GTypeInstance
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{
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/*< private >*/
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GTypeClass *g_class;
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};
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struct _GTypeInterface
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{
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/*< private >*/
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GType g_type; /* iface type */
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GType g_instance_type;
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};
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struct _GTypeQuery
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{
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GType type;
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const gchar *type_name;
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guint class_size;
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guint instance_size;
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};
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/* Casts, checks and accessors for structured types
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* usage of these macros is reserved to type implementations only
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*/
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/*< protected >*/
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#define G_TYPE_CHECK_INSTANCE(instance) (_G_TYPE_CHI ((GTypeInstance*) (instance)))
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#define G_TYPE_CHECK_INSTANCE_CAST(instance, g_type, c_type) (_G_TYPE_CIC ((instance), (g_type), c_type))
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#define G_TYPE_CHECK_INSTANCE_TYPE(instance, g_type) (_G_TYPE_CIT ((instance), (g_type)))
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#define G_TYPE_INSTANCE_GET_CLASS(instance, g_type, c_type) (_G_TYPE_IGC ((instance), (g_type), c_type))
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#define G_TYPE_INSTANCE_GET_INTERFACE(instance, g_type, c_type) (_G_TYPE_IGI ((instance), (g_type), c_type))
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#define G_TYPE_CHECK_CLASS_CAST(g_class, g_type, c_type) (_G_TYPE_CCC ((g_class), (g_type), c_type))
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#define G_TYPE_CHECK_CLASS_TYPE(g_class, g_type) (_G_TYPE_CCT ((g_class), (g_type)))
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#define G_TYPE_CHECK_VALUE(value) (_G_TYPE_CHV ((value)))
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#define G_TYPE_CHECK_VALUE_TYPE(value, g_type) (_G_TYPE_CVH ((value), (g_type)))
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#define G_TYPE_FROM_INSTANCE(instance) (G_TYPE_FROM_CLASS (((GTypeInstance*) (instance))->g_class))
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#define G_TYPE_FROM_CLASS(g_class) (((GTypeClass*) (g_class))->g_type)
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#define G_TYPE_FROM_INTERFACE(g_iface) (((GTypeInterface*) (g_iface))->g_type)
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/* debug flags for g_type_init_with_debug_flags() */
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typedef enum /*< skip >*/
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{
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G_TYPE_DEBUG_NONE = 0,
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G_TYPE_DEBUG_OBJECTS = 1 << 0,
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G_TYPE_DEBUG_SIGNALS = 1 << 1,
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G_TYPE_DEBUG_MASK = 0x03
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} GTypeDebugFlags;
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/* --- prototypes --- */
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void g_type_init (void);
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void g_type_init_with_debug_flags (GTypeDebugFlags debug_flags);
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G_CONST_RETURN gchar* g_type_name (GType type);
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GQuark g_type_qname (GType type);
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GType g_type_from_name (const gchar *name);
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GType g_type_parent (GType type);
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guint g_type_depth (GType type);
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GType g_type_next_base (GType leaf_type,
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GType root_type);
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gboolean g_type_is_a (GType type,
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GType is_a_type);
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guint g_type_fundamental_branch_last (GType type);
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gpointer g_type_class_ref (GType type);
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gpointer g_type_class_peek (GType type);
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void g_type_class_unref (gpointer g_class);
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gpointer g_type_class_peek_parent (gpointer g_class);
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gpointer g_type_interface_peek (gpointer instance_class,
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GType iface_type);
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/* g_free() the returned arrays */
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GType* g_type_children (GType type,
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guint *n_children);
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GType* g_type_interfaces (GType type,
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guint *n_interfaces);
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/* per-type _static_ data */
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void g_type_set_qdata (GType type,
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GQuark quark,
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gpointer data);
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gpointer g_type_get_qdata (GType type,
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GQuark quark);
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void g_type_query (GType type,
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GTypeQuery *query);
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/* --- type registration --- */
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typedef void (*GBaseInitFunc) (gpointer g_class);
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typedef void (*GBaseFinalizeFunc) (gpointer g_class);
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typedef void (*GClassInitFunc) (gpointer g_class,
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gpointer class_data);
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typedef void (*GClassFinalizeFunc) (gpointer g_class,
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gpointer class_data);
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typedef void (*GInstanceInitFunc) (GTypeInstance *instance,
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gpointer g_class);
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typedef void (*GInterfaceInitFunc) (gpointer g_iface,
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gpointer iface_data);
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typedef void (*GInterfaceFinalizeFunc) (gpointer g_iface,
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gpointer iface_data);
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typedef gboolean (*GTypeClassCacheFunc) (gpointer cache_data,
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GTypeClass *g_class);
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typedef enum /*< skip >*/
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{
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G_TYPE_FLAG_CLASSED = (1 << 0),
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G_TYPE_FLAG_INSTANTIATABLE = (1 << 1),
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G_TYPE_FLAG_DERIVABLE = (1 << 2),
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G_TYPE_FLAG_DEEP_DERIVABLE = (1 << 3)
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} GTypeFundamentalFlags;
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typedef enum /*< skip >*/
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{
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G_TYPE_FLAG_ABSTRACT = (1 << 4),
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G_TYPE_FLAG_VALUE_ABSTRACT = (1 << 5)
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} GTypeFlags;
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struct _GTypeInfo
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{
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/* interface types, classed types, instantiated types */
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guint16 class_size;
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GBaseInitFunc base_init;
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GBaseFinalizeFunc base_finalize;
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/* classed types, instantiated types */
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GClassInitFunc class_init;
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GClassFinalizeFunc class_finalize;
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gconstpointer class_data;
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/* instantiated types */
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guint16 instance_size;
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guint16 n_preallocs;
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GInstanceInitFunc instance_init;
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/* value handling */
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const GTypeValueTable *value_table;
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};
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struct _GTypeFundamentalInfo
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{
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GTypeFundamentalFlags type_flags;
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};
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struct _GInterfaceInfo
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{
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GInterfaceInitFunc interface_init;
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GInterfaceFinalizeFunc interface_finalize;
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gpointer interface_data;
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};
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struct _GTypeValueTable
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{
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void (*value_init) (GValue *value);
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void (*value_free) (GValue *value);
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void (*value_copy) (const GValue *src_value,
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GValue *dest_value);
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/* varargs functionality (optional) */
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gpointer (*value_peek_pointer) (const GValue *value);
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gchar *collect_format;
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gchar* (*collect_value) (GValue *value,
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guint n_collect_values,
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GTypeCValue *collect_values,
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guint collect_flags);
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gchar *lcopy_format;
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gchar* (*lcopy_value) (const GValue *value,
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guint n_collect_values,
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GTypeCValue *collect_values,
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guint collect_flags);
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};
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GType g_type_register_static (GType parent_type,
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const gchar *type_name,
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const GTypeInfo *info,
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GTypeFlags flags);
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GType g_type_register_dynamic (GType parent_type,
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const gchar *type_name,
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GTypePlugin *plugin,
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GTypeFlags flags);
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GType g_type_register_fundamental (GType type_id,
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const gchar *type_name,
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const GTypeInfo *info,
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const GTypeFundamentalInfo *finfo,
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GTypeFlags flags);
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void g_type_add_interface_static (GType instance_type,
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GType interface_type,
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const GInterfaceInfo *info);
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void g_type_add_interface_dynamic (GType instance_type,
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GType interface_type,
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GTypePlugin *plugin);
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void g_type_interface_add_prerequisite (GType interface_type,
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GType prerequisite_type);
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/* --- protected (for fundamental type implementations) --- */
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GTypePlugin* g_type_get_plugin (GType type);
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GTypePlugin* g_type_interface_get_plugin (GType instance_type,
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GType implementation_type);
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GType g_type_fundamental_last (void);
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gboolean g_type_check_flags (GType type,
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guint flags);
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GTypeInstance* g_type_create_instance (GType type);
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void g_type_free_instance (GTypeInstance *instance);
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void g_type_add_class_cache_func (gpointer cache_data,
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GTypeClassCacheFunc cache_func);
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void g_type_remove_class_cache_func (gpointer cache_data,
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GTypeClassCacheFunc cache_func);
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void g_type_class_unref_uncached (gpointer g_class);
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/*< private >*/
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gboolean g_type_check_instance (GTypeInstance *instance);
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GTypeInstance* g_type_check_instance_cast (GTypeInstance *instance,
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GType iface_type);
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gboolean g_type_instance_is_a (GTypeInstance *instance,
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GType iface_type);
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GTypeClass* g_type_check_class_cast (GTypeClass *g_class,
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GType is_a_type);
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gboolean g_type_class_is_a (GTypeClass *g_class,
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GType is_a_type);
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gboolean g_type_check_is_value_type (GType type);
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gboolean g_type_check_value (GValue *value);
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gboolean g_type_check_value_holds (GValue *value,
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GType type);
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GTypeValueTable* g_type_value_table_peek (GType type);
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/* --- debugging functions --- */
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G_CONST_RETURN gchar* g_type_name_from_instance (GTypeInstance *instance);
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G_CONST_RETURN gchar* g_type_name_from_class (GTypeClass *g_class);
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/* --- implementation bits --- */
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#ifndef G_DISABLE_CAST_CHECKS
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# define _G_TYPE_CIC(ip, gt, ct) \
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((ct*) g_type_check_instance_cast ((GTypeInstance*) ip, gt))
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# define _G_TYPE_CCC(cp, gt, ct) \
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((ct*) g_type_check_class_cast ((GTypeClass*) cp, gt))
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#else /* G_DISABLE_CAST_CHECKS */
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# define _G_TYPE_CIC(ip, gt, ct) ((ct*) ip)
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# define _G_TYPE_CCC(cp, gt, ct) ((ct*) cp)
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#endif /* G_DISABLE_CAST_CHECKS */
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#define _G_TYPE_CHI(ip) (g_type_check_instance ((GTypeInstance*) ip))
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#define _G_TYPE_CVH(vl, gt) (g_type_check_value_holds ((GValue*) vl, gt))
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#define _G_TYPE_CHV(vl) (g_type_check_value ((GValue*) vl))
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#define _G_TYPE_IGC(ip, gt, ct) ((ct*) (((GTypeInstance*) ip)->g_class))
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#define _G_TYPE_IGI(ip, gt, ct) ((ct*) g_type_interface_peek (((GTypeInstance*) ip)->g_class, gt))
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#ifdef __GNUC__
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# define _G_TYPE_CIT(ip, gt) ({ \
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GTypeInstance *__inst = (GTypeInstance*) ip; GType __t = gt; gboolean __r; \
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if (__inst && __inst->g_class && __inst->g_class->g_type == __t) \
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__r = TRUE; \
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else \
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__r = g_type_instance_is_a (__inst, __t); \
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__r; \
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})
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# define _G_TYPE_CCT(cp, gt) ({ \
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GTypeClass *__class = (GTypeClass*) cp; GType __t = gt; gboolean __r; \
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if (__class && __class->g_type == __t) \
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__r = TRUE; \
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else \
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__r = g_type_class_is_a (__class, __t); \
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__r; \
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})
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#else /* !__GNUC__ */
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# define _G_TYPE_CIT(ip, gt) (g_type_instance_is_a ((GTypeInstance*) ip, gt))
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# define _G_TYPE_CCT(cp, gt) (g_type_class_is_a ((GTypeClass*) cp, gt))
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#endif /* !__GNUC__ */
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#define G_TYPE_FLAG_RESERVED_ID_BIT (1 << 30)
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extern GTypeDebugFlags _g_type_debug_flags;
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G_END_DECLS
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#endif /* __G_TYPE_H__ */
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