<?php
  
  /**
   * This file is part of the Carbon package.
   *
   * (c) Brian Nesbitt <brian@nesbot.com>
   *
   * For the full copyright and license information, please view the LICENSE
   * file that was distributed with this source code.
   */
  
  namespace Carbon\Exceptions;
  
  use Throwable;
  
  class UnknownUnitException extends UnitException
  {
      /**
       * The unit.
       *
       * @var string
       */
      protected $unit;
  
      /**
       * Constructor.
       *
       * @param string         $unit
       * @param int            $code
       * @param Throwable|null $previous
       */
      public function __construct($unit, $code = 0, Throwable $previous = null)
      {
          $this->unit = $unit;
  
          parent::__construct("Unknown unit '$unit'.", $code, $previous);
      }
  
      /**
       * Get the unit.
       *
       * @return string
       */
      public function getUnit(): string
      {
          return $this->unit;
      }
  }