/* Chrysalide - Outil d'analyse de fichiers binaires
 * singleton.h - prototypes pour la réduction du nombre d'instances d'un même type
 *
 * Copyright (C) 2021-2024 Cyrille Bagard
 *
 *  This file is part of Chrysalide.
 *
 *  Chrysalide is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Chrysalide 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Foobar.  If not, see <http://www.gnu.org/licenses/>.
 */


#ifndef _GLIBEXT_SINGLETON_H
#define _GLIBEXT_SINGLETON_H


#include <stdbool.h>


#include "helpers.h"



/* ------------------ INTERFACE POUR CANDIDAT A UNE CENTRALISATION ------------------ */


#define G_TYPE_SINGLETON_CANDIDATE (g_singleton_candidate_get_type())

DECLARE_INTERFACE(GSingletonCandidate, g_singleton_candidate, G, SINGLETON_CANDIDATE);


/* Indique si le candidat est figé. */
bool g_singleton_candidate_is_read_only(const GSingletonCandidate *);

/* Crée une copie modifiable d'un object unique. */
GSingletonCandidate *g_singleton_candidate_dup(const GSingletonCandidate *);



/* ------------------------- COLLECTION D'INSTANCES UNIQUES ------------------------- */


#define G_TYPE_SINGLETON_FACTORY (g_singleton_factory_get_type())

DECLARE_GTYPE(GSingletonFactory, g_singleton_factory, G, SINGLETON_FACTORY);


/* Crée un compacteur d'instances de types. */
GSingletonFactory *g_singleton_factory_new(void);

/* Fournit l'instance unique correspondant à un objet. */
GSingletonCandidate *g_singleton_factory_get_instance(GSingletonFactory *, GSingletonCandidate *);



#endif  /* _GLIBEXT_SINGLETON_H */