You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
71 lines
1.6 KiB
PHP
71 lines
1.6 KiB
PHP
<?php
|
|
/**
|
|
* Final class LazilyInstantiatedService.
|
|
*
|
|
* @link https://www.mwpd.io/
|
|
*
|
|
* @copyright 2019 Alain Schlesser
|
|
* @license MIT
|
|
*/
|
|
|
|
/**
|
|
* Original code modified for this project.
|
|
*
|
|
* @copyright 2021 Google LLC
|
|
* @license https://www.apache.org/licenses/LICENSE-2.0 Apache License 2.0
|
|
*/
|
|
|
|
declare(strict_types = 1);
|
|
|
|
namespace Google\Web_Stories\Infrastructure\ServiceContainer;
|
|
|
|
use Google\Web_Stories\Exception\InvalidService;
|
|
use Google\Web_Stories\Infrastructure\Service;
|
|
|
|
/**
|
|
* A service that only gets properly instantiated when it is actually being
|
|
* retrieved from the container.
|
|
*
|
|
* @internal
|
|
*
|
|
* @since 1.6.0
|
|
*/
|
|
final class LazilyInstantiatedService implements Service {
|
|
|
|
/**
|
|
* Instantiation of Class.
|
|
*
|
|
* @var callable
|
|
*/
|
|
private $instantiation;
|
|
|
|
/**
|
|
* Instantiate a LazilyInstantiatedService object.
|
|
*
|
|
* @param callable $instantiation Instantiation callable to use.
|
|
*/
|
|
public function __construct( callable $instantiation ) {
|
|
$this->instantiation = $instantiation;
|
|
}
|
|
|
|
/**
|
|
* Do the actual service instantiation and return the real service.
|
|
*
|
|
* @since 1.6.0
|
|
*
|
|
* @throws InvalidService If the service could not be properly instantiated.
|
|
*
|
|
* @return Service Properly instantiated service.
|
|
*/
|
|
public function instantiate(): Service {
|
|
$instantiation = $this->instantiation; // Because uniform variable syntax not supported in PHP 5.6.
|
|
$service = $instantiation();
|
|
|
|
if ( ! $service instanceof Service ) {
|
|
throw InvalidService::from_service( $service ); // phpcs:ignore WordPress.Security.EscapeOutput.ExceptionNotEscaped
|
|
}
|
|
|
|
return $service;
|
|
}
|
|
}
|