<?php

namespace Illuminate\Auth;

use Exception;

class AuthenticationException extends Exception
{
    /**
     * The guard instance.
     *
     * @var \Illuminate\Contracts\Auth\Guard
     */
    protected $guard;

    /**
     * Create a new authentication exception.
     *
     * @param \Illuminate\Contracts\Auth\Guard|null  $guard
     */
    public function __construct($guard = null)
    {
        $this->guard = $guard;

        parent::__construct('Unauthenticated.');
    }

    /**
     * Get the guard instance.
     *
     * @return \Illuminate\Contracts\Auth\Guard|null
     */
    public function guard()
    {
        return $this->guard;
    }
}