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150 lines
5.2 KiB
150 lines
5.2 KiB
<?php |
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/* |
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* This file is part of the Symfony package. |
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* |
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* (c) Fabien Potencier <fabien@symfony.com> |
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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 Symfony\Component\DependencyInjection; |
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use Psr\Container\ContainerExceptionInterface; |
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use Psr\Container\NotFoundExceptionInterface; |
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use Symfony\Component\DependencyInjection\Exception\RuntimeException; |
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use Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException; |
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use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException; |
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use Symfony\Contracts\Service\ServiceLocatorTrait; |
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use Symfony\Contracts\Service\ServiceProviderInterface; |
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use Symfony\Contracts\Service\ServiceSubscriberInterface; |
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/** |
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* @author Robin Chalas <robin.chalas@gmail.com> |
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* @author Nicolas Grekas <p@tchwork.com> |
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*/ |
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class ServiceLocator implements ServiceProviderInterface |
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{ |
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use ServiceLocatorTrait { |
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get as private doGet; |
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} |
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private $externalId; |
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private $container; |
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/** |
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* {@inheritdoc} |
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* |
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* @return mixed |
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*/ |
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public function get(string $id) |
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{ |
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if (!$this->externalId) { |
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return $this->doGet($id); |
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} |
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try { |
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return $this->doGet($id); |
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} catch (RuntimeException $e) { |
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$what = sprintf('service "%s" required by "%s"', $id, $this->externalId); |
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$message = preg_replace('/service "\.service_locator\.[^"]++"/', $what, $e->getMessage()); |
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if ($e->getMessage() === $message) { |
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$message = sprintf('Cannot resolve %s: %s', $what, $message); |
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} |
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$r = new \ReflectionProperty($e, 'message'); |
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$r->setAccessible(true); |
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$r->setValue($e, $message); |
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throw $e; |
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} |
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} |
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public function __invoke(string $id) |
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{ |
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return isset($this->factories[$id]) ? $this->get($id) : null; |
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} |
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/** |
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* @internal |
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* |
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* @return static |
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*/ |
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public function withContext(string $externalId, Container $container): self |
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{ |
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$locator = clone $this; |
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$locator->externalId = $externalId; |
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$locator->container = $container; |
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return $locator; |
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} |
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private function createNotFoundException(string $id): NotFoundExceptionInterface |
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{ |
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if ($this->loading) { |
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$msg = sprintf('The service "%s" has a dependency on a non-existent service "%s". This locator %s', end($this->loading), $id, $this->formatAlternatives()); |
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return new ServiceNotFoundException($id, end($this->loading) ?: null, null, [], $msg); |
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} |
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$class = debug_backtrace(\DEBUG_BACKTRACE_PROVIDE_OBJECT | \DEBUG_BACKTRACE_IGNORE_ARGS, 4); |
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$class = isset($class[3]['object']) ? \get_class($class[3]['object']) : null; |
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$externalId = $this->externalId ?: $class; |
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$msg = []; |
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$msg[] = sprintf('Service "%s" not found:', $id); |
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if (!$this->container) { |
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$class = null; |
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} elseif ($this->container->has($id) || isset($this->container->getRemovedIds()[$id])) { |
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$msg[] = 'even though it exists in the app\'s container,'; |
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} else { |
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try { |
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$this->container->get($id); |
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$class = null; |
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} catch (ServiceNotFoundException $e) { |
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if ($e->getAlternatives()) { |
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$msg[] = sprintf('did you mean %s? Anyway,', $this->formatAlternatives($e->getAlternatives(), 'or')); |
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} else { |
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$class = null; |
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} |
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} |
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} |
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if ($externalId) { |
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$msg[] = sprintf('the container inside "%s" is a smaller service locator that %s', $externalId, $this->formatAlternatives()); |
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} else { |
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$msg[] = sprintf('the current service locator %s', $this->formatAlternatives()); |
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} |
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if (!$class) { |
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// no-op |
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} elseif (is_subclass_of($class, ServiceSubscriberInterface::class)) { |
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$msg[] = sprintf('Unless you need extra laziness, try using dependency injection instead. Otherwise, you need to declare it using "%s::getSubscribedServices()".', preg_replace('/([^\\\\]++\\\\)++/', '', $class)); |
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} else { |
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$msg[] = 'Try using dependency injection instead.'; |
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} |
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return new ServiceNotFoundException($id, end($this->loading) ?: null, null, [], implode(' ', $msg)); |
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} |
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private function createCircularReferenceException(string $id, array $path): ContainerExceptionInterface |
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{ |
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return new ServiceCircularReferenceException($id, $path); |
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} |
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private function formatAlternatives(array $alternatives = null, string $separator = 'and'): string |
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{ |
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$format = '"%s"%s'; |
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if (null === $alternatives) { |
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if (!$alternatives = array_keys($this->factories)) { |
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return 'is empty...'; |
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} |
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$format = sprintf('only knows about the %s service%s.', $format, 1 < \count($alternatives) ? 's' : ''); |
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} |
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$last = array_pop($alternatives); |
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return sprintf($format, $alternatives ? implode('", "', $alternatives) : $last, $alternatives ? sprintf(' %s "%s"', $separator, $last) : ''); |
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} |
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}
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