text: <?php
  /**
   * This file is part of FacturaScripts
   * Copyright (C) 2020 Carlos Garcia Gomez <carlos@facturascripts.com>
   *
   * This program is free software: you can redistribute it and/or modify
   * it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public License
   * along with this program. If not, see <http://www.gnu.org/licenses/>.
   */
  namespace FacturaScripts\Core\Model\Base;
  
  use FacturaScripts\Dinamic\Model\Impuesto;
  
  trait TaxRelationTrait
  {
  
      /**
       * Tax identifier of the tax assigned.
       *
       * @var string
       */
      public $codimpuesto;
  
      /**
       * Containt all avaliable taxes.
       *
       * @var Impuesto[]
       */
      private static $taxes = [];
  
      /**
       * Returns the current tax or the default one
       * 
       * @return Impuesto
       */
      public function getTax()
      {
          if (!isset(self::$taxes[$this->codimpuesto])) {
              self::$taxes[$this->codimpuesto] = new Impuesto();
              self::$taxes[$this->codimpuesto]->loadFromCode($this->codimpuesto);
          }
  
          return self::$taxes[$this->codimpuesto];
      }
  }
  