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<?php |
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/** |
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* Dependency injection container. |
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* |
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* @package WP_Defender\Component |
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*/ |
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|
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namespace WP_Defender\Component; |
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|
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use ReflectionClass; |
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use RuntimeException; |
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use WP_Defender\Component\Container\Builder; |
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|
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/** |
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* Lightweight dependency injection container with constructor autowiring. |
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*/ |
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class Container { |
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|
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/** |
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* Resolved and explicitly registered entries. |
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* |
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* @var array<string, mixed> |
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*/ |
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private array $entries = array(); |
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|
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/** |
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* Class instance builder. |
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* |
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* @var Builder |
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*/ |
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private Builder $builder; |
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|
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/** |
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* Register the container itself. |
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*/ |
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public function __construct() { |
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$this->entries[ self::class ] = $this; |
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$this->builder = new Builder( $this ); |
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} |
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|
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/** |
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* Find an entry or construct and share a class. |
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* |
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* @template T of object |
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* @param string $id Entry identifier or class name. |
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* |
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* @return mixed |
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* @phpstan-param class-string<T> $id |
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* @phpstan-return T |
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* |
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* @throws RuntimeException Entry does not exist or cannot be resolved. |
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*/ |
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public function get( string $id ): mixed { |
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if ( array_key_exists( $id, $this->entries ) ) { |
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return $this->entries[ $id ]; |
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} |
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|
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$entry = $this->builder->build( $id ); |
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$this->entries[ $id ] = $entry; |
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|
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return $entry; |
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} |
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|
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/** |
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* Register or replace an entry. |
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* |
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* @param string $id Entry identifier. |
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* @param mixed $value Entry value. |
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*/ |
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public function set( string $id, mixed $value ): void { |
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$this->entries[ $id ] = $value; |
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} |
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|
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/** |
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* Construct a fresh class instance. |
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* |
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* @template T of object |
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* @param string $id Class name. |
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* @param array<string,mixed> $parameters Named constructor parameters. |
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* |
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* @return object |
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* @phpstan-param class-string<T> $id |
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* @phpstan-return T |
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* |
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* @throws RuntimeException Entry does not exist or cannot be resolved. |
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*/ |
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public function make( string $id, array $parameters = array() ): object { |
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return $this->builder->build( $id, $parameters ); |
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} |
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|
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/** |
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* Determine whether an entry is registered or can be instantiated. |
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* |
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* This check does not construct the entry. |
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* |
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* @param string $id Entry identifier or class name. |
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*/ |
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public function has( string $id ): bool { |
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return array_key_exists( $id, $this->entries ) || $this->is_instantiable( $id ); |
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} |
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|
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/** |
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* Determine whether a class can be instantiated. |
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* |
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* @param string $id Class name. |
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*/ |
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private function is_instantiable( string $id ): bool { |
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return class_exists( $id ) && ( new ReflectionClass( $id ) )->isInstantiable(); |
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} |
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} |
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|
