cse\base\SingletonTrait

Complexity

Total Complexity

6

Size/Duplication

Total Lines	48
Duplicated Lines	0 %

Importance

Changes

0

4 Methods

Rating	Name	Duplication	Size	Complexity
A	__clone()	0	3	1
A	getInstance()	0	13	3
A	__sleep()	0	3	1
A	__wakeup()	0	3	1

<?php

declare(strict_types=1);

namespace cse\base;

use cse\base\Exceptions\CSESingletonException;

/**
 * Class SingletonTrait
 *
 * @package cse\based
 */
trait SingletonTrait
{
    protected static $instance;

    /**
     * @param string $instanceKey
     *
     * @return SingletonTrait
     *
     * @throws CSESingletonException
     */
    public static function getInstance(string $instanceKey = ''): self
    {
        $instanceKey = empty($instanceKey) ? __CLASS__ : $instanceKey;

        // instance exist
        if (empty(self::$instance[$instanceKey])) {
            $reflection = new \ReflectionClass(__CLASS__);
            $arg = func_get_args();
            array_shift($arg);
            self::$instance[$instanceKey] = $reflection->newInstanceArgs($arg);
        }

        return self::$instance[$instanceKey];
    }

    /**
     * @throws CSESingletonException
     */
    final public function __clone()
    {
        CSESingletonException::throwException(CSESingletonException::ERROR_SINGLETON_CLONE);
    }

    /**
     * @throws CSESingletonException
     */
    final public function __sleep()
    {
        CSESingletonException::throwException(CSESingletonException::ERROR_SINGLETON_SLEEP);
    }

    /**
     * @throws CSESingletonException
     */
    final public function __wakeup()
    {
        CSESingletonException::throwException(CSESingletonException::ERROR_SINGLETON_WAKEUP);
    }
}