SortKey.php

<?php
/*
 * citeproc-php
 *
 * @link        http://github.com/seboettg/citeproc-php for the source repository
 * @copyright   Copyright (c) 2016 Sebastian Böttger.
 * @license     https://opensource.org/licenses/MIT
 */
 
namespace Seboettg\CiteProc\Style\Sort;
 
interface SortKey
{
    public function getVariable();
 
    public function getSort();
 
    public function isNameVariable();
 
    public function isNumberVariable();
 
    public function isDateVariable();
 
    public function isMacro();
}