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glib/gobject/genums.c
Tim Janik ee23c09e83 added newly added gobject/ headers. 
Tue Oct 24 22:09:14 2000  Tim Janik  <timj@gtk.org>

        * glib-object.h: added newly added gobject/ headers.

        * gmesage.c: print g_message() output to stderr instead of stdout.

Wed Oct 25 20:27:02 2000  Tim Janik  <timj@gtk.org>

        * gtype.c (g_type_free_instance): for the moment, freeing object
        structures will fill their memory portion with 0xAA. there's a
        FIXME there, remove this line at a later point.

Tue Oct 24 23:10:26 2000  Tim Janik  <timj@gtk.org>

        * glib-genmarshal.1:
        * glib-genmarshal.c: added publically installed marshaller generator.

        * gtype.h: added G_TYPE_INSTANCE_GET_INTERFACE() to retrive a certain
        interface VTable from instances.

Mon Oct 23 08:28:15 2000  Tim Janik  <timj@gtk.org>

        * gobject.[hc]: new functions for closure maintenance:
        (g_object_watch_closure): maintain validity of the object and
        the closure for objects that are used as data part of a closure.
        (g_cclosure_new_object): convenience function to create C closures
        that have an object as data argument.
        (g_closure_new_object): convenience function to create closures
        that have an object as data argument.

        * gclosure.[hc]: implementation of GClosure mechanism.
        a closure is basically an encapsulation of a callback function
        and its environment. ideally, most places supporting callback
        functions will simply take a GClosure* pointer and thus unify
        callback environments wrg destroy notification etc.
        GClosure provides destroy notifiers for arbitrary data pointers,
        reference counting, invalidation notification (it can be invalidated
        which is merely a deactivate state) and a marshallinbg abstraction.
        GCClosure is also provided in these files, they present a specialized
        GClosure implementation for C language callbacks.

        * genum.c: macro cleanups.

        * gboxed.[hc]: new files, for boxed type abstraction.
        (g_boxed_copy): copy a boxed structure
        (g_boxed_free): free a boxed structure
        (g_value_set_boxed):
        (g_value_get_boxed): standard GValue functions for boxed types
        (g_boxed_type_register_static): convenience function for easy
        introduction of new G_TYPE_BOXED derivatives.

        * gparam.[hc]: introduced g_param_type_register_static(), a short hand
        for creation of new GParamSpec derived types.

        * gtype.[hc]: many fixes, introduced ability to flag individual
        type nodes as ABSTRACT upon registration, added value_peek_pointer()
        to the value table to peek at GValue contents as a pointer for types
        that support this. fixed up GValue checks.

        * gvalue.[hc]: added g_value_fits_pointer() and g_value_get_as_pointer()
        to peek at the value contents as pointer.

        * *.[hc]: adaptions to type macro fixes and changes in the type
        registration API.

        * many const corrections over the place.

Sat Oct 21 02:49:56 2000  Tim Janik  <timj@gtk.org>

        * gtype.c (g_type_conforms_to): this function basically behaves like
        and is_a check, except that it _additionally_ features interfaces
        for instantiatable types. enforce this in the second branch as well
        (`type' conforms_to `type') even if `type' is not an interface type.

Fri Oct 20 15:31:04 2000  Tim Janik  <timj@gtk.org>

        * gvaluetypes.[hc]: added G_TYPE_POINTER implementation from jrb.

        * gtype.[hc]:
        * gobject.c:
        * gvaluetypes.c: added GTypeValueTable.value_peek_pointer and
        suitable implementations of this for G_TYPE_STRING, G_TYPE_OBJECT
        and G_TYPE_POINTER.

Mon Aug 21 04:13:37 2000  Tim Janik  <timj@gtk.org>

        * gbsearcharray.[hc]: long standing needed generic implementation
        of a binary searchable, sorted and dynamically sized array.
2000-10-25 20:36:35 +00:00

419 lines
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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.
*/
#include <string.h>
#include "genums.h"
#include "gvalue.h"
#include "gvaluecollector.h"
/* --- prototypes --- */
static void g_enum_class_init (GEnumClass *class,
gpointer class_data);
static void g_flags_class_init (GFlagsClass *class,
gpointer class_data);
static void value_flags_enum_init (GValue *value);
static void value_flags_enum_copy_value (const GValue *src_value,
GValue *dest_value);
static gchar* value_flags_enum_collect_value (GValue *value,
guint nth_value,
GType *collect_type,
GTypeCValue *collect_value);
static gchar* value_flags_enum_lcopy_value (const GValue *value,
guint nth_value,
GType *collect_type,
GTypeCValue *collect_value);
/* --- functions --- */
void
g_enum_types_init (void) /* sync with gtype.c */
{
static gboolean initialized = FALSE;
static const GTypeValueTable flags_enum_value_table = {
value_flags_enum_init, /* value_init */
NULL, /* value_free */
value_flags_enum_copy_value, /* value_copy */
NULL, /* value_peek_pointer */
G_VALUE_COLLECT_INT, /* collect_type */
value_flags_enum_collect_value, /* collect_value */
G_VALUE_COLLECT_POINTER, /* lcopy_type */
value_flags_enum_lcopy_value, /* lcopy_value */
};
static GTypeInfo info = {
0, /* class_size */
NULL, /* base_init */
NULL, /* base_destroy */
NULL, /* class_init */
NULL, /* class_destroy */
NULL, /* class_data */
0, /* instance_size */
0, /* n_preallocs */
NULL, /* instance_init */
&flags_enum_value_table, /* value_table */
};
static const GTypeFundamentalInfo finfo = {
G_TYPE_FLAG_CLASSED | G_TYPE_FLAG_DERIVABLE,
};
GType type;
g_return_if_fail (initialized == FALSE);
initialized = TRUE;
/* G_TYPE_ENUM
*/
info.class_size = sizeof (GEnumClass);
type = g_type_register_fundamental (G_TYPE_ENUM, "GEnum", &info, &finfo, G_TYPE_FLAG_ABSTRACT);
g_assert (type == G_TYPE_ENUM);
/* G_TYPE_FLAGS
*/
info.class_size = sizeof (GFlagsClass);
type = g_type_register_fundamental (G_TYPE_FLAGS, "GFlags", &info, &finfo, G_TYPE_FLAG_ABSTRACT);
g_assert (type == G_TYPE_FLAGS);
}
static void
value_flags_enum_init (GValue *value)
{
value->data[0].v_long = 0;
}
static void
value_flags_enum_copy_value (const GValue *src_value,
GValue *dest_value)
{
dest_value->data[0].v_long = src_value->data[0].v_long;
}
static gchar*
value_flags_enum_collect_value (GValue *value,
guint nth_value,
GType *collect_type,
GTypeCValue *collect_value)
{
value->data[0].v_long = collect_value->v_int;
*collect_type = 0;
return NULL;
}
static gchar*
value_flags_enum_lcopy_value (const GValue *value,
guint nth_value,
GType *collect_type,
GTypeCValue *collect_value)
{
gint *int_p = collect_value->v_pointer;
if (!int_p)
return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
*int_p = value->data[0].v_long;
*collect_type = 0;
return NULL;
}
GType
g_enum_register_static (const gchar *name,
const GEnumValue *const_static_values)
{
GTypeInfo enum_type_info = {
sizeof (GEnumClass), /* class_size */
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) g_enum_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
0, /* instance_size */
0, /* n_preallocs */
NULL, /* instance_init */
NULL, /* value_table */
};
GType type;
g_return_val_if_fail (name != NULL, 0);
g_return_val_if_fail (const_static_values != NULL, 0);
enum_type_info.class_data = const_static_values;
type = g_type_register_static (G_TYPE_ENUM, name, &enum_type_info, 0);
return type;
}
GType
g_flags_register_static (const gchar *name,
const GFlagsValue *const_static_values)
{
GTypeInfo flags_type_info = {
sizeof (GFlagsClass), /* class_size */
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) g_flags_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
0, /* instance_size */
0, /* n_preallocs */
NULL, /* instance_init */
NULL, /* value_table */
};
GType type;
g_return_val_if_fail (name != NULL, 0);
g_return_val_if_fail (const_static_values != NULL, 0);
flags_type_info.class_data = const_static_values;
type = g_type_register_static (G_TYPE_FLAGS, name, &flags_type_info, 0);
return type;
}
void
g_enum_complete_type_info (GType g_enum_type,
GTypeInfo *info,
const GEnumValue *const_values)
{
g_return_if_fail (G_TYPE_IS_ENUM (g_enum_type));
g_return_if_fail (info != NULL);
g_return_if_fail (const_values != NULL);
info->class_size = sizeof (GEnumClass);
info->base_init = NULL;
info->base_finalize = NULL;
info->class_init = (GClassInitFunc) g_enum_class_init;
info->class_finalize = NULL;
info->class_data = const_values;
}
void
g_flags_complete_type_info (GType g_flags_type,
GTypeInfo *info,
const GFlagsValue *const_values)
{
g_return_if_fail (G_TYPE_IS_FLAGS (g_flags_type));
g_return_if_fail (info != NULL);
g_return_if_fail (const_values != NULL);
info->class_size = sizeof (GFlagsClass);
info->base_init = NULL;
info->base_finalize = NULL;
info->class_init = (GClassInitFunc) g_flags_class_init;
info->class_finalize = NULL;
info->class_data = const_values;
}
static void
g_enum_class_init (GEnumClass *class,
gpointer class_data)
{
g_return_if_fail (G_IS_ENUM_CLASS (class));
class->minimum = 0;
class->maximum = 0;
class->n_values = 0;
class->values = class_data;
if (class->values)
{
GEnumValue *values;
class->minimum = class->values->value;
class->maximum = class->values->value;
for (values = class->values; values->value_name; values++)
{
class->minimum = MIN (class->minimum, values->value);
class->maximum = MAX (class->maximum, values->value);
class->n_values++;
}
}
}
static void
g_flags_class_init (GFlagsClass *class,
gpointer class_data)
{
g_return_if_fail (G_IS_FLAGS_CLASS (class));
class->mask = 0;
class->n_values = 0;
class->values = class_data;
if (class->values)
{
GFlagsValue *values;
for (values = class->values; values->value_name; values++)
{
class->mask |= values->value;
class->n_values++;
}
}
}
GEnumValue*
g_enum_get_value_by_name (GEnumClass *enum_class,
const gchar *name)
{
g_return_val_if_fail (G_IS_ENUM_CLASS (enum_class), NULL);
g_return_val_if_fail (name != NULL, NULL);
if (enum_class->n_values)
{
GEnumValue *enum_value;
for (enum_value = enum_class->values; enum_value->value_name; enum_value++)
if (strcmp (name, enum_value->value_name) == 0)
return enum_value;
}
return NULL;
}
GFlagsValue*
g_flags_get_value_by_name (GFlagsClass *flags_class,
const gchar *name)
{
g_return_val_if_fail (G_IS_FLAGS_CLASS (flags_class), NULL);
g_return_val_if_fail (name != NULL, NULL);
if (flags_class->n_values)
{
GFlagsValue *flags_value;
for (flags_value = flags_class->values; flags_value->value_name; flags_value++)
if (strcmp (name, flags_value->value_name) == 0)
return flags_value;
}
return NULL;
}
GEnumValue*
g_enum_get_value_by_nick (GEnumClass *enum_class,
const gchar *nick)
{
g_return_val_if_fail (G_IS_ENUM_CLASS (enum_class), NULL);
g_return_val_if_fail (nick != NULL, NULL);
if (enum_class->n_values)
{
GEnumValue *enum_value;
for (enum_value = enum_class->values; enum_value->value_name; enum_value++)
if (enum_value->value_nick && strcmp (nick, enum_value->value_nick) == 0)
return enum_value;
}
return NULL;
}
GFlagsValue*
g_flags_get_value_by_nick (GFlagsClass *flags_class,
const gchar *nick)
{
g_return_val_if_fail (G_IS_FLAGS_CLASS (flags_class), NULL);
g_return_val_if_fail (nick != NULL, NULL);
if (flags_class->n_values)
{
GFlagsValue *flags_value;
for (flags_value = flags_class->values; flags_value->value_nick; flags_value++)
if (flags_value->value_nick && strcmp (nick, flags_value->value_nick) == 0)
return flags_value;
}
return NULL;
}
GEnumValue*
g_enum_get_value (GEnumClass *enum_class,
gint value)
{
g_return_val_if_fail (G_IS_ENUM_CLASS (enum_class), NULL);
if (enum_class->n_values)
{
GEnumValue *enum_value;
for (enum_value = enum_class->values; enum_value->value_name; enum_value++)
if (enum_value->value == value)
return enum_value;
}
return NULL;
}
GFlagsValue*
g_flags_get_first_value (GFlagsClass *flags_class,
guint value)
{
g_return_val_if_fail (G_IS_FLAGS_CLASS (flags_class), NULL);
if (flags_class->n_values)
{
GFlagsValue *flags_value;
for (flags_value = flags_class->values; flags_value->value_name; flags_value++)
if ((flags_value->value & value) > 0)
return flags_value;
}
return NULL;
}
void
g_value_set_enum (GValue *value,
gint v_enum)
{
g_return_if_fail (G_IS_VALUE_ENUM (value));
value->data[0].v_long = v_enum;
}
gint
g_value_get_enum (const GValue *value)
{
g_return_val_if_fail (G_IS_VALUE_ENUM (value), 0);
return value->data[0].v_long;
}
void
g_value_set_flags (GValue *value,
guint v_flags)
{
g_return_if_fail (G_IS_VALUE_FLAGS (value));
value->data[0].v_ulong = v_flags;
}
guint
g_value_get_flags (const GValue *value)
{
g_return_val_if_fail (G_IS_VALUE_FLAGS (value), 0);
return value->data[0].v_ulong;
}
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