| 1 | /* GObject - GLib Type, Object, Parameter and Signal Library |
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| 2 | * Copyright (C) 1997-1999, 2000-2001 Tim Janik and Red Hat, Inc. |
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| 3 | * |
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| 4 | * This library is free software; you can redistribute it and/or |
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| 5 | * modify it under the terms of the GNU Lesser General Public |
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| 6 | * License as published by the Free Software Foundation; either |
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| 7 | * version 2 of the License, or (at your option) any later version. |
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| 8 | * |
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| 9 | * This library is distributed in the hope that it will be useful, |
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | * Lesser General Public License for more details. |
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| 13 | * |
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| 14 | * You should have received a copy of the GNU Lesser General |
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| 15 | * Public License along with this library; if not, write to the |
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| 16 | * Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
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| 17 | * Boston, MA 02111-1307, USA. |
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| 18 | * |
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| 19 | * gvalue.h: generic GValue functions |
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| 20 | */ |
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| 21 | #if !defined (__GLIB_GOBJECT_H_INSIDE__) && !defined (GOBJECT_COMPILATION) |
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| 22 | #error "Only <glib-object.h> can be included directly." |
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| 23 | #endif |
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| 24 | |
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| 25 | #ifndef __G_VALUE_H__ |
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| 26 | #define __G_VALUE_H__ |
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| 27 | |
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| 28 | #include <gobject/gtype.h> |
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| 29 | |
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| 30 | G_BEGIN_DECLS |
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| 31 | |
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| 32 | /* --- type macros --- */ |
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| 33 | #define G_TYPE_IS_VALUE(type) (g_type_check_is_value_type (type)) |
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| 34 | #define G_IS_VALUE(value) (G_TYPE_CHECK_VALUE (value)) |
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| 35 | #define G_VALUE_TYPE(value) (((GValue*) (value))->g_type) |
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| 36 | #define G_VALUE_TYPE_NAME(value) (g_type_name (G_VALUE_TYPE (value))) |
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| 37 | #define G_VALUE_HOLDS(value,type) (G_TYPE_CHECK_VALUE_TYPE ((value), (type))) |
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| 38 | |
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| 39 | |
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| 40 | /* --- typedefs & structures --- */ |
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| 41 | typedef void (*GValueTransform) (const GValue *src_value, |
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| 42 | GValue *dest_value); |
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| 43 | struct _GValue |
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| 44 | { |
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| 45 | /*< private >*/ |
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| 46 | GType g_type; |
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| 47 | |
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| 48 | /* public for GTypeValueTable methods */ |
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| 49 | union { |
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| 50 | gint v_int; |
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| 51 | guint v_uint; |
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| 52 | glong v_long; |
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| 53 | gulong v_ulong; |
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| 54 | gint64 v_int64; |
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| 55 | guint64 v_uint64; |
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| 56 | gfloat v_float; |
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| 57 | gdouble v_double; |
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| 58 | gpointer v_pointer; |
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| 59 | } data[2]; |
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| 60 | }; |
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| 61 | |
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| 62 | |
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| 63 | /* --- prototypes --- */ |
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| 64 | GValue* g_value_init (GValue *value, |
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| 65 | GType g_type); |
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| 66 | void g_value_copy (const GValue *src_value, |
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| 67 | GValue *dest_value); |
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| 68 | GValue* g_value_reset (GValue *value); |
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| 69 | void g_value_unset (GValue *value); |
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| 70 | void g_value_set_instance (GValue *value, |
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| 71 | gpointer instance); |
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| 72 | |
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| 73 | |
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| 74 | /* --- private --- */ |
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| 75 | gboolean g_value_fits_pointer (const GValue *value); |
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| 76 | gpointer g_value_peek_pointer (const GValue *value); |
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| 77 | |
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| 78 | |
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| 79 | /* --- implementation details --- */ |
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| 80 | gboolean g_value_type_compatible (GType src_type, |
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| 81 | GType dest_type); |
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| 82 | gboolean g_value_type_transformable (GType src_type, |
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| 83 | GType dest_type); |
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| 84 | gboolean g_value_transform (const GValue *src_value, |
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| 85 | GValue *dest_value); |
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| 86 | void g_value_register_transform_func (GType src_type, |
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| 87 | GType dest_type, |
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| 88 | GValueTransform transform_func); |
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| 89 | #define G_VALUE_NOCOPY_CONTENTS (1 << 27) |
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| 90 | |
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| 91 | |
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| 92 | G_END_DECLS |
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| 93 | |
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| 94 | #endif /* __G_VALUE_H__ */ |
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