Viewing file: ServiceLocator.php (5.17 KB) -rw-r--r-- Select action/file-type: (+) | (+) | (+) | Code (+) | Session (+) | (+) | SDB (+) | (+) | (+) | (+) | (+) | (+) |
<?php
/* * This file is part of the Symfony package. * * (c) Fabien Potencier <[email protected]> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */
namespace Symfony\Component\DependencyInjection;
use Psr\Container\ContainerExceptionInterface; use Psr\Container\NotFoundExceptionInterface; use Symfony\Component\DependencyInjection\Exception\RuntimeException; use Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException; use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException; use Symfony\Contracts\Service\ServiceLocatorTrait; use Symfony\Contracts\Service\ServiceProviderInterface; use Symfony\Contracts\Service\ServiceSubscriberInterface;
/** * @author Robin Chalas <[email protected]> * @author Nicolas Grekas <[email protected]> */ class ServiceLocator implements ServiceProviderInterface { use ServiceLocatorTrait { get as private doGet; }
private $externalId; private $container;
/** * {@inheritdoc} * * @return mixed */ public function get(string $id) { if (!$this->externalId) { return $this->doGet($id); }
try { return $this->doGet($id); } catch (RuntimeException $e) { $what = sprintf('service "%s" required by "%s"', $id, $this->externalId); $message = preg_replace('/service "\.service_locator\.[^"]++"/', $what, $e->getMessage());
if ($e->getMessage() === $message) { $message = sprintf('Cannot resolve %s: %s', $what, $message); }
$r = new \ReflectionProperty($e, 'message'); $r->setAccessible(true); $r->setValue($e, $message);
throw $e; } }
public function __invoke(string $id) { return isset($this->factories[$id]) ? $this->get($id) : null; }
/** * @internal * * @return static */ public function withContext(string $externalId, Container $container): self { $locator = clone $this; $locator->externalId = $externalId; $locator->container = $container;
return $locator; }
private function createNotFoundException(string $id): NotFoundExceptionInterface { if ($this->loading) { $msg = sprintf('The service "%s" has a dependency on a non-existent service "%s". This locator %s', end($this->loading), $id, $this->formatAlternatives());
return new ServiceNotFoundException($id, end($this->loading) ?: null, null, [], $msg); }
$class = debug_backtrace(\DEBUG_BACKTRACE_PROVIDE_OBJECT | \DEBUG_BACKTRACE_IGNORE_ARGS, 4); $class = isset($class[3]['object']) ? \get_class($class[3]['object']) : null; $externalId = $this->externalId ?: $class;
$msg = []; $msg[] = sprintf('Service "%s" not found:', $id);
if (!$this->container) { $class = null; } elseif ($this->container->has($id) || isset($this->container->getRemovedIds()[$id])) { $msg[] = 'even though it exists in the app\'s container,'; } else { try { $this->container->get($id); $class = null; } catch (ServiceNotFoundException $e) { if ($e->getAlternatives()) { $msg[] = sprintf('did you mean %s? Anyway,', $this->formatAlternatives($e->getAlternatives(), 'or')); } else { $class = null; } } } if ($externalId) { $msg[] = sprintf('the container inside "%s" is a smaller service locator that %s', $externalId, $this->formatAlternatives()); } else { $msg[] = sprintf('the current service locator %s', $this->formatAlternatives()); }
if (!$class) { // no-op } elseif (is_subclass_of($class, ServiceSubscriberInterface::class)) { $msg[] = sprintf('Unless you need extra laziness, try using dependency injection instead. Otherwise, you need to declare it using "%s::getSubscribedServices()".', preg_replace('/([^\\\\]++\\\\)++/', '', $class)); } else { $msg[] = 'Try using dependency injection instead.'; }
return new ServiceNotFoundException($id, end($this->loading) ?: null, null, [], implode(' ', $msg)); }
private function createCircularReferenceException(string $id, array $path): ContainerExceptionInterface { return new ServiceCircularReferenceException($id, $path); }
private function formatAlternatives(array $alternatives = null, string $separator = 'and'): string { $format = '"%s"%s'; if (null === $alternatives) { if (!$alternatives = array_keys($this->factories)) { return 'is empty...'; } $format = sprintf('only knows about the %s service%s.', $format, 1 < \count($alternatives) ? 's' : ''); } $last = array_pop($alternatives);
return sprintf($format, $alternatives ? implode('", "', $alternatives) : $last, $alternatives ? sprintf(' %s "%s"', $separator, $last) : ''); } }
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