Stratadox\Instantiator\Instantiator

Complexity

Total Complexity

9

Size/Duplication

Total Lines	54
Duplicated Lines	0 %

Importance

Changes

0

5 Methods

Rating	Name	Duplication	Size	Complexity
A	forThe()	0	3	1
A	class()	0	3	1
A	instance()	0	6	2
A	newInstanceFromDeserialization()	0	8	1
A	__construct()	0	12	4

<?php
declare(strict_types=1);

namespace Stratadox\Instantiator;

use ReflectionClass;
use ReflectionException;
use function sprintf;
use function strlen;
use Throwable;

/**
 * Simple Instantiator.
 *
 * @author Stratadox
 */
final class Instantiator extends ReflectionClass implements ProvidesInstances
{
    /** @throws CannotInstantiateThis */
    public function __construct(string $class)
    {
        try {
            parent::__construct($class);
        } catch (ReflectionException $exception) {
            throw CannotFindTheClass::encountered($exception);
        }
        if ($this->isAbstract()) {
            throw ClassIsAbstract::cannotInstantiate($class);
        }
        if ($this->isInterface()) {
            throw ThatIsAnInterface::cannotInstantiate($class);
        }
    }

    /**
     * Produces a new instantiator.
     *
     * @param string $class      The class to create the instantiator for.
     * @return ProvidesInstances The instantiator for the class.
     * @throws CannotInstantiateThis
     */
    public static function forThe(string $class): ProvidesInstances
    {
        return new Instantiator($class);
    }

    /** @inheritdoc */
    public function instance(): object
    {
        try {
            return $this->newInstanceWithoutConstructor();
        } catch (Throwable $exception) {
            return $this->newInstanceFromDeserialization();
        }
    }

    /** @inheritdoc */
    public function class(): string
    {
        return $this->getName();
    }

    private function newInstanceFromDeserialization(): object
    {
        $class = $this->getName();
        return unserialize(sprintf(
            'O:%d:"%s":0:{}',
            strlen($class),
            $class
        ), ['allowed_classes' => [$class]]);
    }
}