luc14n0/glib
1
0
Fork 0
mirror of https://gitlab.gnome.org/GNOME/glib.git synced 2024-12-27 07:56:14 +01:00
Code Issues Packages Projects Releases Wiki Activity
adfafc0872
glib/gobject/gvaluetypes.c
Tim Janik bbc5a3adac changed collect_format, collect_value() and lcopy_format, lcopy_value() in 
Sat Feb 17 04:55:35 2001  Tim Janik  <timj@gtk.org>

        * gtype.[hc]: changed collect_format, collect_value() and lcopy_format,
        lcopy_value() in the GTypeValueTable. the collect functions are now
        called only once per value, collect_format/lcopy_format are strings
        that enlist all necessary GTypeCValues to be varargs-collected.

        * gvalue.h: ranamed STATIC_TAG to G_VALUE_NOCOPY_CONTENTS to indicate that
        a value shouldn't copy its contents.

        * gvaluecollector.h: changed G_VALUE_COLLECT() and G_VALUE_LCOPY()
        macros to carry an additional argument (flags) that can be used
        to pass G_VALUE_NOCOPY_CONTENTS along to the collection functions.

        * *.c: adapted collect_value() and lcopy_value() functions to the new
        prototypes, support G_VALUE_NOCOPY_CONTENTS where apropriate.

        * gsignal.[hc]: introduced a G_SIGNAL_TYPE_STATIC_SCOPE flag that can
        be passed along (ORed) with the parameter types, indicating that the
        emission arguments are to be considered static for the scope of the
        emission. should be used with care and only if the caller knows that
        a parameter cannot be destroyed/freed from signal handlers connected
        to an emission.
2001-02-17 05:32:00 +00:00

794 lines
19 KiB
C
Raw Blame History

/* GObject - GLib Type, Object, Parameter and Signal Library
* Copyright (C) 1997, 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.
*/
/*
* MT safe
*/
#include "gvaluetypes.h"
#include "gvaluecollector.h"
#include <string.h>
/* --- value functions --- */
static void
value_long0_init (GValue *value)
{
value->data[0].v_long = 0;
}
static void
value_long0_copy (const GValue *src_value,
GValue *dest_value)
{
dest_value->data[0].v_long = src_value->data[0].v_long;
}
static gchar*
value_char_lcopy_value (const GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags)
{
gint8 *int8_p = collect_values[0].v_pointer;
if (!int8_p)
return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
*int8_p = value->data[0].v_int;
return NULL;
}
static gchar*
value_boolean_lcopy_value (const GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags)
{
gboolean *bool_p = collect_values[0].v_pointer;
if (!bool_p)
return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
*bool_p = value->data[0].v_int;
return NULL;
}
static gchar*
value_int_collect_value (GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags)
{
value->data[0].v_int = collect_values[0].v_int;
return NULL;
}
static gchar*
value_int_lcopy_value (const GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags)
{
gint *int_p = collect_values[0].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_int;
return NULL;
}
static gchar*
value_long_collect_value (GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags)
{
value->data[0].v_long = collect_values[0].v_long;
return NULL;
}
static gchar*
value_long_lcopy_value (const GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags)
{
glong *long_p = collect_values[0].v_pointer;
if (!long_p)
return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
*long_p = value->data[0].v_long;
return NULL;
}
static void
value_float_init (GValue *value)
{
value->data[0].v_float = 0.0;
}
static void
value_float_copy (const GValue *src_value,
GValue *dest_value)
{
dest_value->data[0].v_float = src_value->data[0].v_float;
}
static gchar*
value_float_collect_value (GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags)
{
value->data[0].v_float = collect_values[0].v_double;
return NULL;
}
static gchar*
value_float_lcopy_value (const GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags)
{
gfloat *float_p = collect_values[0].v_pointer;
if (!float_p)
return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
*float_p = value->data[0].v_float;
return NULL;
}
static void
value_double_init (GValue *value)
{
value->data[0].v_double = 0.0;
}
static void
value_double_copy (const GValue *src_value,
GValue *dest_value)
{
dest_value->data[0].v_double = src_value->data[0].v_double;
}
static gchar*
value_double_collect_value (GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags)
{
value->data[0].v_double = collect_values[0].v_double;
return NULL;
}
static gchar*
value_double_lcopy_value (const GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags)
{
gdouble *double_p = collect_values[0].v_pointer;
if (!double_p)
return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
*double_p = value->data[0].v_double;
return NULL;
}
static void
value_string_init (GValue *value)
{
value->data[0].v_pointer = NULL;
}
static void
value_string_free_value (GValue *value)
{
if (!(value->data[1].v_uint & G_VALUE_NOCOPY_CONTENTS))
g_free (value->data[0].v_pointer);
}
static void
value_string_copy_value (const GValue *src_value,
GValue *dest_value)
{
dest_value->data[0].v_pointer = g_strdup (src_value->data[0].v_pointer);
}
static gchar*
value_string_collect_value (GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags)
{
if (!collect_values[0].v_pointer)
value->data[0].v_pointer = NULL;
else if (collect_flags & G_VALUE_NOCOPY_CONTENTS)
{
value->data[0].v_pointer = collect_values[0].v_pointer;
value->data[1].v_uint = G_VALUE_NOCOPY_CONTENTS;
}
else
value->data[0].v_pointer = g_strdup (collect_values[0].v_pointer);
return NULL;
}
static gchar*
value_string_lcopy_value (const GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags)
{
gchar **string_p = collect_values[0].v_pointer;
if (!string_p)
return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
if (!value->data[0].v_pointer)
*string_p = NULL;
else if (collect_flags & G_VALUE_NOCOPY_CONTENTS)
*string_p = value->data[0].v_pointer;
else
*string_p = g_strdup (value->data[0].v_pointer);
return NULL;
}
static void
value_pointer_init (GValue *value)
{
value->data[0].v_pointer = NULL;
}
static void
value_pointer_copy (const GValue *src_value,
GValue *dest_value)
{
dest_value->data[0].v_pointer = src_value->data[0].v_pointer;
}
static gpointer
value_pointer_peek_pointer (const GValue *value)
{
return value->data[0].v_pointer;
}
static gchar*
value_pointer_collect_value (GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags)
{
value->data[0].v_pointer = collect_values[0].v_pointer;
return NULL;
}
static gchar*
value_pointer_lcopy_value (const GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags)
{
gpointer *pointer_p = collect_values[0].v_pointer;
if (!pointer_p)
return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
*pointer_p = value->data[0].v_pointer;
return NULL;
}
static void
value_ccallback_init (GValue *value)
{
value->data[0].v_pointer = NULL;
value->data[1].v_pointer = NULL;
}
static void
value_ccallback_copy (const GValue *src_value,
GValue *dest_value)
{
dest_value->data[0].v_pointer = src_value->data[0].v_pointer;
dest_value->data[1].v_pointer = src_value->data[1].v_pointer;
}
static gchar*
value_ccallback_collect_value (GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags)
{
gchar *error = NULL;
if (!collect_values[0].v_pointer)
error = g_strconcat ("invalid (NULL) pointer callback function for value type `",
G_VALUE_TYPE_NAME (value),
"'",
NULL);
value->data[0].v_pointer = collect_values[0].v_pointer;
value->data[1].v_pointer = collect_values[1].v_pointer;
return error;
}
static gchar*
value_ccallback_lcopy_value (const GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags)
{
gpointer *callback_p = collect_values[0].v_pointer;
gpointer *data_p = collect_values[1].v_pointer;
if (!callback_p || !data_p)
return g_strdup_printf ("%s location for `%s' passed as NULL",
callback_p ? "data" : "callback",
G_VALUE_TYPE_NAME (value));
*callback_p = value->data[0].v_pointer;
*data_p = value->data[1].v_pointer;
return NULL;
}
/* --- type initialization --- */
void
g_value_types_init (void) /* sync with gtype.c */
{
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 */
NULL, /* value_table */
};
const GTypeFundamentalInfo finfo = { G_TYPE_FLAG_DERIVABLE, };
GType type;
/* G_TYPE_CHAR / G_TYPE_UCHAR
*/
{
static const GTypeValueTable value_table = {
value_long0_init, /* value_init */
NULL, /* value_free */
value_long0_copy, /* value_copy */
NULL, /* value_peek_pointer */
"i", /* collect_format */
value_int_collect_value, /* collect_value */
"p", /* lcopy_format */
value_char_lcopy_value, /* lcopy_value */
};
info.value_table = &value_table;
type = g_type_register_fundamental (G_TYPE_CHAR, "gchar", &info, &finfo, 0);
g_assert (type == G_TYPE_CHAR);
type = g_type_register_fundamental (G_TYPE_UCHAR, "guchar", &info, &finfo, 0);
g_assert (type == G_TYPE_UCHAR);
}
/* G_TYPE_BOOLEAN
*/
{
static const GTypeValueTable value_table = {
value_long0_init, /* value_init */
NULL, /* value_free */
value_long0_copy, /* value_copy */
NULL, /* value_peek_pointer */
"i", /* collect_format */
value_int_collect_value, /* collect_value */
"p", /* lcopy_format */
value_boolean_lcopy_value, /* lcopy_value */
};
info.value_table = &value_table;
type = g_type_register_fundamental (G_TYPE_BOOLEAN, "gboolean", &info, &finfo, 0);
g_assert (type == G_TYPE_BOOLEAN);
}
/* G_TYPE_INT / G_TYPE_UINT
*/
{
static const GTypeValueTable value_table = {
value_long0_init, /* value_init */
NULL, /* value_free */
value_long0_copy, /* value_copy */
NULL, /* value_peek_pointer */
"i", /* collect_format */
value_int_collect_value, /* collect_value */
"p", /* lcopy_format */
value_int_lcopy_value, /* lcopy_value */
};
info.value_table = &value_table;
type = g_type_register_fundamental (G_TYPE_INT, "gint", &info, &finfo, 0);
g_assert (type == G_TYPE_INT);
type = g_type_register_fundamental (G_TYPE_UINT, "guint", &info, &finfo, 0);
g_assert (type == G_TYPE_UINT);
}
/* G_TYPE_LONG / G_TYPE_ULONG
*/
{
static const GTypeValueTable value_table = {
value_long0_init, /* value_init */
NULL, /* value_free */
value_long0_copy, /* value_copy */
NULL, /* value_peek_pointer */
"l", /* collect_format */
value_long_collect_value, /* collect_value */
"p", /* lcopy_format */
value_long_lcopy_value, /* lcopy_value */
};
info.value_table = &value_table;
type = g_type_register_fundamental (G_TYPE_LONG, "glong", &info, &finfo, 0);
g_assert (type == G_TYPE_LONG);
type = g_type_register_fundamental (G_TYPE_ULONG, "gulong", &info, &finfo, 0);
g_assert (type == G_TYPE_ULONG);
}
/* G_TYPE_FLOAT
*/
{
static const GTypeValueTable value_table = {
value_float_init, /* value_init */
NULL, /* value_free */
value_float_copy, /* value_copy */
NULL, /* value_peek_pointer */
"d", /* collect_format */
value_float_collect_value, /* collect_value */
"p", /* lcopy_format */
value_float_lcopy_value, /* lcopy_value */
};
info.value_table = &value_table;
type = g_type_register_fundamental (G_TYPE_FLOAT, "gfloat", &info, &finfo, 0);
g_assert (type == G_TYPE_FLOAT);
}
/* G_TYPE_DOUBLE
*/
{
static const GTypeValueTable value_table = {
value_double_init, /* value_init */
NULL, /* value_free */
value_double_copy, /* value_copy */
NULL, /* value_peek_pointer */
"d", /* collect_format */
value_double_collect_value, /* collect_value */
"p", /* lcopy_format */
value_double_lcopy_value, /* lcopy_value */
};
info.value_table = &value_table;
type = g_type_register_fundamental (G_TYPE_DOUBLE, "gdouble", &info, &finfo, 0);
g_assert (type == G_TYPE_DOUBLE);
}
/* G_TYPE_STRING
*/
{
static const GTypeValueTable value_table = {
value_string_init, /* value_init */
value_string_free_value, /* value_free */
value_string_copy_value, /* value_copy */
value_pointer_peek_pointer, /* value_peek_pointer */
"p", /* collect_format */
value_string_collect_value, /* collect_value */
"p", /* lcopy_format */
value_string_lcopy_value, /* lcopy_value */
};
info.value_table = &value_table;
type = g_type_register_fundamental (G_TYPE_STRING, "gstring", &info, &finfo, 0);
g_assert (type == G_TYPE_STRING);
}
/* G_TYPE_POINTER
*/
{
static const GTypeValueTable value_table = {
value_pointer_init, /* value_init */
NULL, /* value_free */
value_pointer_copy, /* value_copy */
value_pointer_peek_pointer, /* value_peek_pointer */
"p", /* collect_format */
value_pointer_collect_value, /* collect_value */
"p", /* lcopy_format */
value_pointer_lcopy_value, /* lcopy_value */
};
info.value_table = &value_table;
type = g_type_register_fundamental (G_TYPE_POINTER, "gpointer", &info, &finfo, 0);
g_assert (type == G_TYPE_POINTER);
}
/* G_TYPE_CCALLBACK
*/
{
static const GTypeValueTable value_table = {
value_ccallback_init, /* value_init */
NULL, /* value_free */
value_ccallback_copy, /* value_copy */
NULL, /* value_peek_pointer */
"pp", /* collect_format */
value_ccallback_collect_value, /* collect_value */
"pp", /* lcopy_format */
value_ccallback_lcopy_value, /* lcopy_value */
};
info.value_table = &value_table;
type = g_type_register_fundamental (G_TYPE_CCALLBACK, "GCCallback", &info, &finfo, 0);
g_assert (type == G_TYPE_CCALLBACK);
}
}
/* --- GValue functions --- */
void
g_value_set_char (GValue *value,
gint8 v_char)
{
g_return_if_fail (G_IS_VALUE_CHAR (value));
value->data[0].v_int = v_char;
}
gint8
g_value_get_char (const GValue *value)
{
g_return_val_if_fail (G_IS_VALUE_CHAR (value), 0);
return value->data[0].v_int;
}
void
g_value_set_uchar (GValue *value,
guint8 v_uchar)
{
g_return_if_fail (G_IS_VALUE_UCHAR (value));
value->data[0].v_uint = v_uchar;
}
guint8
g_value_get_uchar (const GValue *value)
{
g_return_val_if_fail (G_IS_VALUE_UCHAR (value), 0);
return value->data[0].v_uint;
}
void
g_value_set_boolean (GValue *value,
gboolean v_boolean)
{
g_return_if_fail (G_IS_VALUE_BOOLEAN (value));
value->data[0].v_int = v_boolean;
}
gboolean
g_value_get_boolean (const GValue *value)
{
g_return_val_if_fail (G_IS_VALUE_BOOLEAN (value), 0);
return value->data[0].v_int;
}
void
g_value_set_int (GValue *value,
gint v_int)
{
g_return_if_fail (G_IS_VALUE_INT (value));
value->data[0].v_int = v_int;
}
gint
g_value_get_int (const GValue *value)
{
g_return_val_if_fail (G_IS_VALUE_INT (value), 0);
return value->data[0].v_int;
}
void
g_value_set_uint (GValue *value,
guint v_uint)
{
g_return_if_fail (G_IS_VALUE_UINT (value));
value->data[0].v_uint = v_uint;
}
guint
g_value_get_uint (const GValue *value)
{
g_return_val_if_fail (G_IS_VALUE_UINT (value), 0);
return value->data[0].v_uint;
}
void
g_value_set_long (GValue *value,
glong v_long)
{
g_return_if_fail (G_IS_VALUE_LONG (value));
value->data[0].v_long = v_long;
}
glong
g_value_get_long (const GValue *value)
{
g_return_val_if_fail (G_IS_VALUE_LONG (value), 0);
return value->data[0].v_long;
}
void
g_value_set_ulong (GValue *value,
gulong v_ulong)
{
g_return_if_fail (G_IS_VALUE_ULONG (value));
value->data[0].v_ulong = v_ulong;
}
gulong
g_value_get_ulong (const GValue *value)
{
g_return_val_if_fail (G_IS_VALUE_ULONG (value), 0);
return value->data[0].v_ulong;
}
void
g_value_set_float (GValue *value,
gfloat v_float)
{
g_return_if_fail (G_IS_VALUE_FLOAT (value));
value->data[0].v_float = v_float;
}
gfloat
g_value_get_float (const GValue *value)
{
g_return_val_if_fail (G_IS_VALUE_FLOAT (value), 0);
return value->data[0].v_float;
}
void
g_value_set_double (GValue *value,
gdouble v_double)
{
g_return_if_fail (G_IS_VALUE_DOUBLE (value));
value->data[0].v_double = v_double;
}
gdouble
g_value_get_double (const GValue *value)
{
g_return_val_if_fail (G_IS_VALUE_DOUBLE (value), 0);
return value->data[0].v_double;
}
void
g_value_set_string (GValue *value,
const gchar *v_string)
{
g_return_if_fail (G_IS_VALUE_STRING (value));
if (value->data[1].v_uint & G_VALUE_NOCOPY_CONTENTS)
value->data[1].v_uint = 0;
else
g_free (value->data[0].v_pointer);
value->data[0].v_pointer = g_strdup (v_string);
}
void
g_value_set_static_string (GValue *value,
const gchar *v_string)
{
g_return_if_fail (G_IS_VALUE_STRING (value));
if (!(value->data[1].v_uint & G_VALUE_NOCOPY_CONTENTS))
g_free (value->data[0].v_pointer);
value->data[1].v_uint = G_VALUE_NOCOPY_CONTENTS;
value->data[0].v_pointer = (gchar*) v_string;
}
gchar*
g_value_get_string (const GValue *value)
{
g_return_val_if_fail (G_IS_VALUE_STRING (value), NULL);
return value->data[0].v_pointer;
}
gchar*
g_value_dup_string (const GValue *value)
{
g_return_val_if_fail (G_IS_VALUE_STRING (value), NULL);
return g_strdup (value->data[0].v_pointer);
}
void
g_value_set_pointer (GValue *value,
gpointer v_pointer)
{
g_return_if_fail (G_IS_VALUE_POINTER (value));
value->data[0].v_pointer = v_pointer;
}
gpointer
g_value_get_pointer (const GValue *value)
{
g_return_val_if_fail (G_IS_VALUE_POINTER (value), NULL);
return value->data[0].v_pointer;
}
void
g_value_set_ccallback (GValue *value,
gpointer callback_func,
gpointer callback_data)
{
g_return_if_fail (G_IS_VALUE_CCALLBACK (value));
value->data[0].v_pointer = callback_func;
value->data[1].v_pointer = callback_data;
}
void
g_value_get_ccallback (const GValue *value,
gpointer *callback_func,
gpointer *callback_data)
{
g_return_if_fail (G_IS_VALUE_CCALLBACK (value));
if (callback_func)
*callback_func = value->data[0].v_pointer;
if (callback_data)
*callback_data = value->data[1].v_pointer;
}
Reference in New Issue View Git Blame Copy Permalink