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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\ContainerInterface; |
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use Rade\DI\Exceptions\{ContainerResolutionException, NotFoundServiceException}; |
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/** |
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* A fully strict PSR-11 Container Implementation. |
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* |
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* This class is meant to be used as parent class for container's builder |
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* compiled container class. |
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* |
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* Again, all services declared, should be autowired. Lazy services are not supported. |
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* |
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* @deprecated Performance gain over main container's class is soo little and will be removed before v1 |
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* @author Divine Niiquaye Ibok <[email protected]> |
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*/ |
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class SealedContainer implements ContainerInterface |
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{ |
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protected array $loading = [], $services = [], $privates = [], $aliases = [], $types = [], $tags = []; |
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public function __construct() |
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{ |
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$this->services[AbstractContainer::SERVICE_CONTAINER] = $this; |
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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 $id): bool |
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{ |
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return isset($this->types[$this->aliases[$id] ?? $id]); |
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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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return $this->services[$id = $this->aliases[$id] ?? $id] ?? $this->doLoad($id, $invalidBehavior); |
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} |
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/** |
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* Returns a set of service definition's belonging to a tag. |
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* |
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* @param string $tagName |
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* @param string|null $serviceId If provided, tag value will return instead |
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* |
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* @return mixed |
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*/ |
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public function tagged(string $tagName, ?string $serviceId = null) |
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{ |
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$tags = $this->tags[$tagName] ?? []; |
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return null !== $serviceId ? $tags[$serviceId] ?? [] : $tags; |
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} |
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/** |
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* Return the resolved service of an entry. |
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* |
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* @return mixed |
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*/ |
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protected function doLoad(string $id, int $invalidBehavior) |
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{ |
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if (\array_key_exists($id, $this->types)) { |
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if (1 === \count($autowired = $this->types[$id])) { |
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return $this->get($autowired[1]); |
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} |
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if (AbstractContainer::IGNORE_MULTIPLE_SERVICE !== $invalidBehavior && AbstractContainer::EXCEPTION_ON_MULTIPLE_SERVICE === $invalidBehavior) { |
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\natsort($autowired); |
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$autowired = \count($autowired) <= 3 ? \implode(', ', $autowired) : $autowired[0] . ', ...' . \end($autowired); |
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throw new ContainerResolutionException(\sprintf('Multiple services of type %s found: %s.', $id, $autowired)); |
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} |
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return \array_map([$this, 'get'], $autowired); |
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} |
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if (\preg_match('/\[(.*?)?\]$/', $id, $matches, \PREG_UNMATCHED_AS_NULL)) { |
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$autowired = $this->types[\str_replace($matches[0], '', $id)] ?? []; |
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if (!empty($autowired)) { |
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if (\is_numeric($k = $matches[1])) { |
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$k = $autowired[$k] ?? null; |
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} |
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return $k ? $this->get($k) : \array_map([$this, 'get'], $autowired); |
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} |
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} |
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if (AbstractContainer::NULL_ON_INVALID_SERVICE === $invalidBehavior) { |
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return null; |
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} |
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throw new NotFoundServiceException(\sprintf('The "%s" requested service is not defined in container.', $id)); |
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} |
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private function __clone() |
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{ |
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} |
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} |
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Let?s assume that you have a directory layout like this:
and let?s assume the following content of
Bar.php
:If both files
OtherDir/Foo.php
andSomeDir/Foo.php
are loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as
OtherDir/Foo.php
does not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php
, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: