laravel-cart/src/Validators/Validator.php

<?php

namespace Pixeldigital\Cart\Validators;

use Illuminate\Validation\Factory;
use Illuminate\Filesystem\Filesystem;
use Illuminate\Translation\FileLoader;
use Illuminate\Translation\Translator;

abstract class Validator
{
    protected static $factory;

    public static function instance()
    {
        if (! static::$factory) {
            $loader = new FileLoader(
                new Filesystem,
                '/Translations'
            );

            $translator = new Translator($loader, 'en');
            static::$factory = new Factory($translator);
        }

        return static::$factory;
    }

    public static function __callStatic($method, $args)
    {
        $instance = static::instance();

        switch (count($args)) {
            case 0:
                return $instance->$method();

            case 1:
                return $instance->$method($args[0]);

            case 2:
                return $instance->$method($args[0], $args[1]);

            case 3:
                return $instance->$method($args[0], $args[1], $args[2]);

            case 4:
                return $instance->$method($args[0], $args[1], $args[2], $args[3]);

            default:
                return call_user_func_array([$instance, $method], $args);
        }
    }
}