1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/glib/gobject/gvalue.h Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,159 @@
1.4 +/* GObject - GLib Type, Object, Parameter and Signal Library
1.5 + * Copyright (C) 1997-1999, 2000-2001 Tim Janik and Red Hat, Inc.
1.6 + * Portions copyright (c) 2006-2009 Nokia Corporation. All rights reserved.
1.7 + * This library is free software; you can redistribute it and/or
1.8 + * modify it under the terms of the GNU Lesser General Public
1.9 + * License as published by the Free Software Foundation; either
1.10 + * version 2 of the License, or (at your option) any later version.
1.11 + *
1.12 + * This library is distributed in the hope that it will be useful,
1.13 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.14 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1.15 + * Lesser General Public License for more details.
1.16 + *
1.17 + * You should have received a copy of the GNU Lesser General
1.18 + * Public License along with this library; if not, write to the
1.19 + * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
1.20 + * Boston, MA 02111-1307, USA.
1.21 + *
1.22 + * gvalue.h: generic GValue functions
1.23 + */
1.24 +#if !defined (__GLIB_GOBJECT_H_INSIDE__) && !defined (GOBJECT_COMPILATION)
1.25 +#error "Only <glib-object.h> can be included directly."
1.26 +#endif
1.27 +
1.28 +#ifndef __G_VALUE_H__
1.29 +#define __G_VALUE_H__
1.30 +
1.31 +#include <gobject/gtype.h>
1.32 +
1.33 +G_BEGIN_DECLS
1.34 +
1.35 +/* --- type macros --- */
1.36 +/**
1.37 + * G_TYPE_IS_VALUE:
1.38 + * @type: A #GType value.
1.39 + *
1.40 + * Checks whether the passed in type ID can be used for g_value_init().
1.41 + * That is, this macro checks whether this type provides an implementation
1.42 + * of the #GTypeValueTable functions required for a type to create a #GValue of.
1.43 + *
1.44 + * Returns: Whether @type is suitable as a #GValue type.
1.45 + */
1.46 +#define G_TYPE_IS_VALUE(type) (g_type_check_is_value_type (type))
1.47 +/**
1.48 + * G_IS_VALUE:
1.49 + * @value: A #GValue structure.
1.50 + *
1.51 + * Checks if @value is a valid and initialized #GValue structure.
1.52 + *
1.53 + * Returns: %TRUE on success.
1.54 + */
1.55 +#define G_IS_VALUE(value) (G_TYPE_CHECK_VALUE (value))
1.56 +/**
1.57 + * G_VALUE_TYPE:
1.58 + * @value: A #GValue structure.
1.59 + *
1.60 + * Get the type identifier of @value.
1.61 + *
1.62 + * Returns: the #GType.
1.63 + */
1.64 +#define G_VALUE_TYPE(value) (((GValue*) (value))->g_type)
1.65 +/**
1.66 + * G_VALUE_TYPE_NAME:
1.67 + * @value: A #GValue structure.
1.68 + *
1.69 + * Gets the the type name of @value.
1.70 + *
1.71 + * Returns: the type name.
1.72 + */
1.73 +#define G_VALUE_TYPE_NAME(value) (g_type_name (G_VALUE_TYPE (value)))
1.74 +/**
1.75 + * G_VALUE_HOLDS:
1.76 + * @value: A #GValue structure.
1.77 + * @type: A #GType value.
1.78 + *
1.79 + * Checks if @value holds (or contains) a value of @type.
1.80 + * This macro will also check for @value != %NULL and issue a
1.81 + * warning if the check fails.
1.82 + *
1.83 + * Returns: %TRUE if @value holds the @type.
1.84 + */
1.85 +#define G_VALUE_HOLDS(value,type) (G_TYPE_CHECK_VALUE_TYPE ((value), (type)))
1.86 +
1.87 +
1.88 +/* --- typedefs & structures --- */
1.89 +/**
1.90 + * GValueTransform:
1.91 + * @src_value: Source value.
1.92 + * @dest_value: Target value.
1.93 + *
1.94 + * The type of value transformation functions which can be registered with
1.95 + * g_value_register_transform_func().
1.96 + */
1.97 +typedef void (*GValueTransform) (const GValue *src_value,
1.98 + GValue *dest_value);
1.99 +/**
1.100 + * GValue:
1.101 + *
1.102 + * An opaque structure used to hold different types of values.
1.103 + * The data within the structure has protected scope: it is accessible only
1.104 + * to functions within a #GTypeValueTable structure, or implementations of
1.105 + * the g_value_*() API. That is, code portions which implement new fundamental
1.106 + * types.
1.107 + * #GValue users can not make any assumptions about how data is stored
1.108 + * within the 2 element @data union, and the @g_type member should
1.109 + * only be accessed through the G_VALUE_TYPE() macro.
1.110 + */
1.111 +struct _GValue
1.112 +{
1.113 + /*< private >*/
1.114 + GType g_type;
1.115 +
1.116 + /* public for GTypeValueTable methods */
1.117 + union {
1.118 + gint v_int;
1.119 + guint v_uint;
1.120 + glong v_long;
1.121 + gulong v_ulong;
1.122 + gint64 v_int64;
1.123 + guint64 v_uint64;
1.124 + gfloat v_float;
1.125 + gdouble v_double;
1.126 + gpointer v_pointer;
1.127 + } data[2];
1.128 +};
1.129 +
1.130 +
1.131 +/* --- prototypes --- */
1.132 +IMPORT_C GValue* g_value_init (GValue *value,
1.133 + GType g_type);
1.134 +IMPORT_C void g_value_copy (const GValue *src_value,
1.135 + GValue *dest_value);
1.136 +IMPORT_C GValue* g_value_reset (GValue *value);
1.137 +IMPORT_C void g_value_unset (GValue *value);
1.138 +IMPORT_C void g_value_set_instance (GValue *value,
1.139 + gpointer instance);
1.140 +
1.141 +
1.142 +/* --- private --- */
1.143 +IMPORT_C gboolean g_value_fits_pointer (const GValue *value);
1.144 +IMPORT_C gpointer g_value_peek_pointer (const GValue *value);
1.145 +
1.146 +
1.147 +/* --- implementation details --- */
1.148 +IMPORT_C gboolean g_value_type_compatible (GType src_type,
1.149 + GType dest_type);
1.150 +IMPORT_C gboolean g_value_type_transformable (GType src_type,
1.151 + GType dest_type);
1.152 +IMPORT_C gboolean g_value_transform (const GValue *src_value,
1.153 + GValue *dest_value);
1.154 +IMPORT_C void g_value_register_transform_func (GType src_type,
1.155 + GType dest_type,
1.156 + GValueTransform transform_func);
1.157 +#define G_VALUE_NOCOPY_CONTENTS (1 << 27)
1.158 +
1.159 +
1.160 +G_END_DECLS
1.161 +
1.162 +#endif /* __G_VALUE_H__ */