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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of DivineNii opensource projects. |
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* |
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* PHP version 7.4 and above required |
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* |
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* @author Divine Niiquaye Ibok <[email protected]> |
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* @copyright 2021 DivineNii (https://divinenii.com/) |
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* @license https://opensource.org/licenses/BSD-3-Clause License |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Rade\DI; |
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use Psr\Container\{ContainerExceptionInterface, ContainerInterface}; |
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use Rade\DI\Exceptions\{ContainerResolutionException, NotFoundServiceException}; |
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use Symfony\Contracts\Service\ResetInterface; |
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/** |
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* A container supporting multiple PSR-11 containers. |
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* |
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* @author Divine Niiquaye Ibok <[email protected]> |
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*/ |
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class FallbackContainer extends Container |
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{ |
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/** @var ContainerInterface[] A list of fallback PSR-11 containers */ |
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protected array $fallbacks = []; |
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public function __construct() |
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{ |
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parent::__construct(); |
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$this->types += [self::class => ['container']]; // Autowire this container |
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} |
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/** |
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* Register a PSR-11 fallback container. |
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*/ |
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public function fallback(ContainerInterface $fallback): self |
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{ |
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$this->fallbacks[\get_class($fallback)] = $fallback; |
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return $this; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function get(string $id, int $invalidBehavior = /* self::EXCEPTION_ON_MULTIPLE_SERVICE */ 1) |
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{ |
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try { |
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$service = $this->fallbacks[$id] ?? parent::get($id, $invalidBehavior); |
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} catch (NotFoundServiceException $e) { |
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foreach ($this->fallbacks as $container) { |
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try { |
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return self::$services[$id] = $container->get($id); |
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} catch (ContainerExceptionInterface $e) { |
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// Fallback services not allowed to throw a PSR-11 exception. |
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} |
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} |
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if (\class_exists($id)) { |
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try { |
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return $this->resolver->resolveClass($id); |
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} catch (ContainerResolutionException $e) { |
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// Only resolves class string and not throw it's error. |
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} |
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} |
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} |
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return $service ?? $this->createNotFound($id, true); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function has(string $id): bool |
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{ |
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foreach ($this->fallbacks as $container) { |
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if ($container->has($id)) { |
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return true; |
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} |
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} |
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return isset($this->fallbacks[$id]) || parent::has($id); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function reset(): void |
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{ |
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parent::reset(); |
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// A container such as Symfony DI support reset ... |
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foreach ($this->fallbacks as $fallback) { |
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if ($fallback instanceof ResetInterface) { |
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$fallback->reset(); |
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} |
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} |
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$this->fallbacks = []; |
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} |
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} |
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divineniiquaye /
rade-di
