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<?php
/**
* The presentation memoizer.
*
* @package Yoast\YoastSEO\Memoizers
*/
namespace Yoast\WP\SEO\Memoizers;
use Yoast\WP\SEO\Context\Meta_Tags_Context;
use Yoast\WP\SEO\Models\Indexable;
use Yoast\WP\SEO\Presentations\Indexable_Presentation;
use YoastSEO_Vendor\Symfony\Component\DependencyInjection\ContainerInterface;
/**
* Class Presentation_Memoizer
*/
class Presentation_Memoizer {
/**
* The service container.
*
* @var ContainerInterface
*/
private $container;
/**
* Cache with indexable presentations.
*
* @var Indexable_Presentation[]
*/
private $cache = [];
/**
* Presentation_Memoizer constructor.
*
* @param ContainerInterface $service_container The service container.
*/
public function __construct( ContainerInterface $service_container ) {
$this->container = $service_container;
}
/**
* Gets the presentation of an indexable for a specific page type.
* This function is memoized by the indexable so every call with the same indexable will yield the same result.
*
* @param Indexable $indexable The indexable to get a presentation of.
* @param Meta_Tags_Context $context The current meta tags context.
* @param string $page_type The page type.
*
* @return Indexable_Presentation The indexable presentation.
*/
public function get( Indexable $indexable, Meta_Tags_Context $context, $page_type ) {
if ( ! isset( $this->cache[ $indexable->id ] ) ) {
$presentation = $this->container->get( "Yoast\WP\SEO\Presentations\Indexable_{$page_type}_Presentation", ContainerInterface::NULL_ON_INVALID_REFERENCE );
if ( ! $presentation ) {
$presentation = $this->container->get( Indexable_Presentation::class );
}
$context->presentation = $presentation->of(
[
'model' => $indexable,
'context' => $context,
]
);
$this->cache[ $indexable->id ] = $context->presentation;
}
return $this->cache[ $indexable->id ];
}
/**
* Clears the memoization of either a specific indexable or all indexables.
*
* @param Indexable|int $indexable Optional. The indexable or indexable id to clear the memoization of.
*/
public function clear( $indexable = null ) {
if ( $indexable instanceof Indexable ) {
unset( $this->cache[ $indexable->id ] );
return;
}
if ( \is_int( $indexable ) ) {
unset( $this->cache[ $indexable ] );
}
if ( $indexable === null ) {
$this->cache = [];
}
}
}