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/* OpenIDA - Outil d'analyse de fichiers binaires
 * quirks.c - transmission du type Python exact aux instances de PyObject
 *
 * Copyright (C) 2012 Cyrille Bagard
 *
 *  This file is part of OpenIDA.
 *
 *  OpenIDA 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.
 *
 *  OpenIDA 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 this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */


#include "quirks.h"



#include <pyglib.h>
#include <pygobject.h>






/* Coordonnées insérées manuellement */
typedef struct _PyGObjectData_fake
{
    PyTypeObject *type;                     /* Type précis pour Python     */
    GSList *closures;                       /* Supports d'appel            */

} PyGObjectData_fake;


/* Clef d'accès réservée */
static GQuark pygobject_instance_data_key_fake = 0;





static void pygobject_data_free_fake(PyGObjectData_fake *data)
{
    PyGILState_STATE state;                 /* Etat interne de Python      */
    GSList *iter;                           /* Boucle de parcours          */

    //state = pyglib_gil_state_ensure();

    Py_DECREF(data->type);

    pyg_begin_allow_threads;

    for (iter = data->closures; iter; )
    {
        /**
         * On obtient le lien avant la libération via
         * pygobject_unwatch_closure()...
         */
        iter = iter->next;

        g_closure_invalidate((GClosure *)iter->data);

    }

    pyg_end_allow_threads;

    g_free(data);

    //pyglib_gil_state_release(state);

}



static PyGObjectData_fake *pygobject_data_new_fake(void)
{
    PyGObjectData_fake *result;             /* Instance à retourner        */

    result = g_new0(PyGObjectData_fake, 1);

    return result;

}


static GObject *_ref = NULL;



/******************************************************************************
*                                                                             *
*  Paramètres  : -                                                            *
*                                                                             *
*  Description : Définit les éléments immuables pour toute association.       *
*                                                                             *
*  Retour      : -                                                            *
*                                                                             *
*  Remarques   : -                                                            *
*                                                                             *
******************************************************************************/

void pychrysalide_init_quirks(void)
{
    pygobject_instance_data_key_fake = g_quark_from_static_string("PyGObject::instance-data");

}


/******************************************************************************
*                                                                             *
*  Paramètres  : obj  = instance GLib crée en C.                              *
*                type = type de l'objet Python correspond.                    *
*                                                                             *
*  Description : Crée l'association précise attendue par Python-GObject.      *
*                                                                             *
*  Retour      : -                                                            *
*                                                                             *
*  Remarques   : -                                                            *
*                                                                             *
******************************************************************************/

void pychrysalide_set_instance_data(GObject *obj, PyTypeObject *type)
{
    PyGObjectData_fake *data;

    data = g_object_get_qdata(obj, pygobject_instance_data_key_fake);

    if (data == NULL)
    {
        data = pygobject_data_new_fake();

        data->type = type;
        Py_INCREF(type);

        g_object_set_qdata_full(obj, pygobject_instance_data_key_fake,
                                data, (GDestroyNotify)pygobject_data_free_fake);

    }

}


/******************************************************************************
*                                                                             *
*  Paramètres  : ref = espace de référencement global à utiliser.             *
*                                                                             *
*  Description : Evite à Python d'avoir à manipuler les références internes.  *
*                                                                             *
*  Retour      : Adresse de l'espace de référencement global.                 *
*                                                                             *
*  Remarques   : -                                                            *
*                                                                             *
******************************************************************************/

GObject *_get_internal_ref(GObject *ref)
{
    if (ref != NULL)
    {
        g_object_ref(ref);
        _ref = ref;
    }

    return _ref;

}