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95 lines
2.2 KiB
PHTML
95 lines
2.2 KiB
PHTML
8 months ago
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<?php
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/**
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* Final class SimpleServiceContainer.
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*
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* @link https://www.mwpd.io/
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*
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* @copyright 2019 Alain Schlesser
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* @license MIT
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*/
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/**
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* Original code modified for this project.
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*
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* @copyright 2021 Google LLC
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* @license https://www.apache.org/licenses/LICENSE-2.0 Apache License 2.0
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*/
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declare(strict_types = 1);
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namespace Google\Web_Stories\Infrastructure\ServiceContainer;
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use ArrayObject;
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use Google\Web_Stories\Exception\InvalidService;
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use Google\Web_Stories\Infrastructure\Service;
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use Google\Web_Stories\Infrastructure\ServiceContainer;
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/**
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* A simplified implementation of a service container.
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*
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* We extend ArrayObject so we have default implementations for iterators and
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* array access.
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*
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* @internal
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*
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* @since 1.6.0
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*/
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final class SimpleServiceContainer extends ArrayObject implements ServiceContainer {
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/**
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* Find a service of the container by its identifier and return it.
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*
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* @since 1.6.0
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*
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* @throws InvalidService If the service could not be found.
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*
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* @param string $id Identifier of the service to look for.
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* @return Service Service that was requested.
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*/
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public function get( string $id ): Service {
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if ( ! $this->has( $id ) ) {
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throw InvalidService::from_service_id( $id ); // phpcs:ignore WordPress.Security.EscapeOutput.ExceptionNotEscaped
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}
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/**
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* Service.
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*
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* @var Service $service Service.
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*/
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$service = $this->offsetGet( $id );
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// Instantiate actual services if they were stored lazily.
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if ( $service instanceof LazilyInstantiatedService ) {
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$service = $service->instantiate();
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$this->put( $id, $service );
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}
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return $service;
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}
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/**
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* Check whether the container can return a service for the given
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* identifier.
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*
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* @since 1.6.0
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*
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* @param string $id Identifier of the service to look for.
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*/
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public function has( string $id ): bool {
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return $this->offsetExists( $id );
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}
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/**
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* Put a service into the container for later retrieval.
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*
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* @since 1.6.0
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*
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* @param string $id Identifier of the service to put into the
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* container.
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* @param Service $service Service to put into the container.
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*/
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public function put( string $id, Service $service ): void {
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$this->offsetSet( $id, $service );
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}
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}
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