//=-------------------------------------------------------------------------=//
//  Centers management module                                                //
//                                                                           //
//  Copyright © 2021 The Gem-graph Project                                   //
//                                                                           //
//  This file is part of gem-graph.                                          //
//                                                                           //
//  This program is free software: you can redistribute it and/or modify     //
//  it under the terms of the GNU Affero General Public License as           //
//  published by the Free Software Foundation, either version 3 of the       //
//  License, or (at your option) any later version.                          //
//                                                                           //
//  This program 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 Affero General Public License for more details.                      //
//                                                                           //
//  You should have received a copy of the GNU Affero General Public License //
//  along with this program.  If not, see <https://www.gnu.org/licenses/>.   //
//=-------------------------------------------------------------------------=//

#include "../include/base.h"

/* -------------------------------------------------------------------------- */

Center_t *CenterAdd(Center_t *anyCenter, Center_t *newCenter)
{
    if (!newCenter) return NULL;
    if (anyCenter->next) {
        anyCenter->next->prev = newCenter;
    }
    newCenter->next = anyCenter->next;
    anyCenter->next = newCenter;
    newCenter->prev = anyCenter;

    return newCenter;
}

void CenterRemove(Center_t *oldCenter)
{
    register Center_t *prev;
    register Center_t *next;

    printLog("Removing center %p\n", oldCenter);
    if (!oldCenter) return;

    prev = oldCenter->prev;
    next = oldCenter->next;


    if (prev) prev->next = oldCenter->next;
    if (next) next->prev = oldCenter->prev;
}