Constraint/Factory.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\Constraint;
 
use Seboettg\CiteProc\Exception\ClassNotFoundException;
 
class Factory extends \Seboettg\CiteProc\Util\Factory
{
    const NAMESPACE_CONSTRAINTS = "Seboettg\\CiteProc\\Constraint\\";
 
    public static function createConstraint($name, $value, $match)
    {
        $className = "";
        $parts = explode("-", $name);
        array_walk($parts, function ($part) use (&$className) {
            $className .= ucfirst($part);
        });
        $className = self::NAMESPACE_CONSTRAINTS . $className;
 
        if (!class_exists($className)) {
            throw new ClassNotFoundException($className);
        }
        return new $className($value, $match);
    }
}