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1a95ce84ed
This adds support to be able to explicitely stored interned strings into G_TYPE_STRING GValue. This is useful for cases where the user: * *knows* the string to be stored in the GValue is canonical * Wants to know whther the string stored is canonical This allows: * zero-cost GValue copy (the content is guaranteed to be unique and exist throughout the process life) * zero-cost string equality checks (if both string GValue are interned, you just need to check the pointers for equality or not, instead of doing a strcmp). Fixes #2109
317 lines
10 KiB
C
317 lines
10 KiB
C
/* GObject - GLib Type, Object, Parameter and Signal Library
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* Copyright (C) 1997-1999, 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 2.1 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, see <http://www.gnu.org/licenses/>.
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*
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* gvaluetypes.h: GLib default values
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*/
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#ifndef __G_VALUETYPES_H__
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#define __G_VALUETYPES_H__
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#if !defined (__GLIB_GOBJECT_H_INSIDE__) && !defined (GOBJECT_COMPILATION)
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#error "Only <glib-object.h> can be included directly."
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#endif
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#include <gobject/gvalue.h>
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G_BEGIN_DECLS
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/* --- type macros --- */
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/**
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* G_VALUE_HOLDS_CHAR:
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* @value: a valid #GValue structure
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*
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* Checks whether the given #GValue can hold values of type %G_TYPE_CHAR.
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*
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* Returns: %TRUE on success.
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*/
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#define G_VALUE_HOLDS_CHAR(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_CHAR))
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/**
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* G_VALUE_HOLDS_UCHAR:
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* @value: a valid #GValue structure
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*
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* Checks whether the given #GValue can hold values of type %G_TYPE_UCHAR.
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*
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* Returns: %TRUE on success.
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*/
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#define G_VALUE_HOLDS_UCHAR(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_UCHAR))
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/**
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* G_VALUE_HOLDS_BOOLEAN:
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* @value: a valid #GValue structure
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*
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* Checks whether the given #GValue can hold values of type %G_TYPE_BOOLEAN.
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*
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* Returns: %TRUE on success.
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*/
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#define G_VALUE_HOLDS_BOOLEAN(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_BOOLEAN))
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/**
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* G_VALUE_HOLDS_INT:
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* @value: a valid #GValue structure
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*
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* Checks whether the given #GValue can hold values of type %G_TYPE_INT.
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*
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* Returns: %TRUE on success.
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*/
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#define G_VALUE_HOLDS_INT(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_INT))
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/**
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* G_VALUE_HOLDS_UINT:
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* @value: a valid #GValue structure
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*
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* Checks whether the given #GValue can hold values of type %G_TYPE_UINT.
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*
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* Returns: %TRUE on success.
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*/
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#define G_VALUE_HOLDS_UINT(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_UINT))
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/**
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* G_VALUE_HOLDS_LONG:
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* @value: a valid #GValue structure
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*
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* Checks whether the given #GValue can hold values of type %G_TYPE_LONG.
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*
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* Returns: %TRUE on success.
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*/
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#define G_VALUE_HOLDS_LONG(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_LONG))
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/**
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* G_VALUE_HOLDS_ULONG:
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* @value: a valid #GValue structure
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*
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* Checks whether the given #GValue can hold values of type %G_TYPE_ULONG.
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*
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* Returns: %TRUE on success.
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*/
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#define G_VALUE_HOLDS_ULONG(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_ULONG))
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/**
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* G_VALUE_HOLDS_INT64:
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* @value: a valid #GValue structure
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*
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* Checks whether the given #GValue can hold values of type %G_TYPE_INT64.
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*
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* Returns: %TRUE on success.
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*/
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#define G_VALUE_HOLDS_INT64(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_INT64))
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/**
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* G_VALUE_HOLDS_UINT64:
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* @value: a valid #GValue structure
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*
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* Checks whether the given #GValue can hold values of type %G_TYPE_UINT64.
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*
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* Returns: %TRUE on success.
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*/
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#define G_VALUE_HOLDS_UINT64(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_UINT64))
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/**
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* G_VALUE_HOLDS_FLOAT:
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* @value: a valid #GValue structure
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*
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* Checks whether the given #GValue can hold values of type %G_TYPE_FLOAT.
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*
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* Returns: %TRUE on success.
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*/
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#define G_VALUE_HOLDS_FLOAT(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_FLOAT))
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/**
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* G_VALUE_HOLDS_DOUBLE:
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* @value: a valid #GValue structure
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*
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* Checks whether the given #GValue can hold values of type %G_TYPE_DOUBLE.
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*
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* Returns: %TRUE on success.
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*/
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#define G_VALUE_HOLDS_DOUBLE(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_DOUBLE))
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/**
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* G_VALUE_HOLDS_STRING:
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* @value: a valid #GValue structure
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*
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* Checks whether the given #GValue can hold values of type %G_TYPE_STRING.
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*
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* Returns: %TRUE on success.
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*/
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#define G_VALUE_HOLDS_STRING(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_STRING))
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/**
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* G_VALUE_IS_INTERNED_STRING:
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* @value: a valid #GValue structure
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*
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* Checks whether @value contains a string which is canonical.
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*
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* Returns: %TRUE if the value contains a string in its canonical
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* representation, as returned by g_intern_string(). See also
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* g_value_set_interned_string().
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*
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* Since: 2.66
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*/
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#define G_VALUE_IS_INTERNED_STRING(value) (G_VALUE_HOLDS_STRING (value) && ((value)->data[1].v_uint & G_VALUE_INTERNED_STRING)) GLIB_AVAILABLE_MACRO_IN_2_66
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/**
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* G_VALUE_HOLDS_POINTER:
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* @value: a valid #GValue structure
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*
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* Checks whether the given #GValue can hold values of type %G_TYPE_POINTER.
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*
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* Returns: %TRUE on success.
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*/
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#define G_VALUE_HOLDS_POINTER(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_POINTER))
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/**
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* G_TYPE_GTYPE:
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*
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* The type for #GType.
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*/
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#define G_TYPE_GTYPE (g_gtype_get_type())
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/**
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* G_VALUE_HOLDS_GTYPE:
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* @value: a valid #GValue structure
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*
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* Checks whether the given #GValue can hold values of type %G_TYPE_GTYPE.
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*
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* Since: 2.12
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* Returns: %TRUE on success.
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*/
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#define G_VALUE_HOLDS_GTYPE(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_GTYPE))
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/**
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* G_VALUE_HOLDS_VARIANT:
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* @value: a valid #GValue structure
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*
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* Checks whether the given #GValue can hold values of type %G_TYPE_VARIANT.
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*
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* Returns: %TRUE on success.
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*
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* Since: 2.26
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*/
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#define G_VALUE_HOLDS_VARIANT(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_VARIANT))
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/* --- prototypes --- */
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GLIB_DEPRECATED_IN_2_32_FOR(g_value_set_schar)
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void g_value_set_char (GValue *value,
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gchar v_char);
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GLIB_DEPRECATED_IN_2_32_FOR(g_value_get_schar)
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gchar g_value_get_char (const GValue *value);
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GLIB_AVAILABLE_IN_ALL
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void g_value_set_schar (GValue *value,
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gint8 v_char);
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GLIB_AVAILABLE_IN_ALL
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gint8 g_value_get_schar (const GValue *value);
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GLIB_AVAILABLE_IN_ALL
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void g_value_set_uchar (GValue *value,
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guchar v_uchar);
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GLIB_AVAILABLE_IN_ALL
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guchar g_value_get_uchar (const GValue *value);
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GLIB_AVAILABLE_IN_ALL
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void g_value_set_boolean (GValue *value,
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gboolean v_boolean);
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GLIB_AVAILABLE_IN_ALL
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gboolean g_value_get_boolean (const GValue *value);
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GLIB_AVAILABLE_IN_ALL
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void g_value_set_int (GValue *value,
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gint v_int);
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GLIB_AVAILABLE_IN_ALL
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gint g_value_get_int (const GValue *value);
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GLIB_AVAILABLE_IN_ALL
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void g_value_set_uint (GValue *value,
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guint v_uint);
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GLIB_AVAILABLE_IN_ALL
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guint g_value_get_uint (const GValue *value);
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GLIB_AVAILABLE_IN_ALL
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void g_value_set_long (GValue *value,
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glong v_long);
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GLIB_AVAILABLE_IN_ALL
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glong g_value_get_long (const GValue *value);
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GLIB_AVAILABLE_IN_ALL
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void g_value_set_ulong (GValue *value,
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gulong v_ulong);
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GLIB_AVAILABLE_IN_ALL
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gulong g_value_get_ulong (const GValue *value);
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GLIB_AVAILABLE_IN_ALL
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void g_value_set_int64 (GValue *value,
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gint64 v_int64);
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GLIB_AVAILABLE_IN_ALL
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gint64 g_value_get_int64 (const GValue *value);
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GLIB_AVAILABLE_IN_ALL
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void g_value_set_uint64 (GValue *value,
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guint64 v_uint64);
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GLIB_AVAILABLE_IN_ALL
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guint64 g_value_get_uint64 (const GValue *value);
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GLIB_AVAILABLE_IN_ALL
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void g_value_set_float (GValue *value,
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gfloat v_float);
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GLIB_AVAILABLE_IN_ALL
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gfloat g_value_get_float (const GValue *value);
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GLIB_AVAILABLE_IN_ALL
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void g_value_set_double (GValue *value,
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gdouble v_double);
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GLIB_AVAILABLE_IN_ALL
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gdouble g_value_get_double (const GValue *value);
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GLIB_AVAILABLE_IN_ALL
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void g_value_set_string (GValue *value,
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const gchar *v_string);
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GLIB_AVAILABLE_IN_ALL
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void g_value_set_static_string (GValue *value,
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const gchar *v_string);
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GLIB_AVAILABLE_IN_2_66
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void g_value_set_interned_string (GValue *value,
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const gchar *v_string);
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GLIB_AVAILABLE_IN_ALL
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const gchar * g_value_get_string (const GValue *value);
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GLIB_AVAILABLE_IN_ALL
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gchar* g_value_dup_string (const GValue *value);
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GLIB_AVAILABLE_IN_ALL
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void g_value_set_pointer (GValue *value,
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gpointer v_pointer);
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GLIB_AVAILABLE_IN_ALL
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gpointer g_value_get_pointer (const GValue *value);
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GLIB_AVAILABLE_IN_ALL
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GType g_gtype_get_type (void);
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GLIB_AVAILABLE_IN_ALL
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void g_value_set_gtype (GValue *value,
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GType v_gtype);
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GLIB_AVAILABLE_IN_ALL
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GType g_value_get_gtype (const GValue *value);
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GLIB_AVAILABLE_IN_ALL
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void g_value_set_variant (GValue *value,
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GVariant *variant);
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GLIB_AVAILABLE_IN_ALL
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void g_value_take_variant (GValue *value,
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GVariant *variant);
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GLIB_AVAILABLE_IN_ALL
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GVariant* g_value_get_variant (const GValue *value);
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GLIB_AVAILABLE_IN_ALL
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GVariant* g_value_dup_variant (const GValue *value);
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/* Convenience for registering new pointer types */
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GLIB_AVAILABLE_IN_ALL
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GType g_pointer_type_register_static (const gchar *name);
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/* debugging aid, describe value contents as string */
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GLIB_AVAILABLE_IN_ALL
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gchar* g_strdup_value_contents (const GValue *value);
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GLIB_AVAILABLE_IN_ALL
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void g_value_take_string (GValue *value,
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gchar *v_string);
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GLIB_DEPRECATED_FOR(g_value_take_string)
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void g_value_set_string_take_ownership (GValue *value,
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gchar *v_string);
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/* humpf, need a C representable type name for G_TYPE_STRING */
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/**
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* gchararray:
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*
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* A C representable type name for #G_TYPE_STRING.
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*/
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typedef gchar* gchararray;
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G_END_DECLS
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#endif /* __G_VALUETYPES_H__ */
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