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<?php
namespace MailPoetVendor\Symfony\Contracts\Service;
if (!defined('ABSPATH')) exit;
use MailPoetVendor\Psr\Container\ContainerExceptionInterface;
use MailPoetVendor\Psr\Container\NotFoundExceptionInterface;
// Help opcache.preload discover always-needed symbols
\class_exists(ContainerExceptionInterface::class);
\class_exists(NotFoundExceptionInterface::class);
trait ServiceLocatorTrait
{
private $factories;
private $loading = [];
private $providedTypes;
public function __construct(array $factories)
{
$this->factories = $factories;
}
public function has($id)
{
return isset($this->factories[$id]);
}
public function get($id)
{
if (!isset($this->factories[$id])) {
throw $this->createNotFoundException($id);
}
if (isset($this->loading[$id])) {
$ids = \array_values($this->loading);
$ids = \array_slice($this->loading, \array_search($id, $ids));
$ids[] = $id;
throw $this->createCircularReferenceException($id, $ids);
}
$this->loading[$id] = $id;
try {
return $this->factories[$id]($this);
} finally {
unset($this->loading[$id]);
}
}
public function getProvidedServices() : array
{
if (null === $this->providedTypes) {
$this->providedTypes = [];
foreach ($this->factories as $name => $factory) {
if (!\is_callable($factory)) {
$this->providedTypes[$name] = '?';
} else {
$type = (new \ReflectionFunction($factory))->getReturnType();
$this->providedTypes[$name] = $type ? ($type->allowsNull() ? '?' : '') . ($type instanceof \ReflectionNamedType ? $type->getName() : $type) : '?';
}
}
}
return $this->providedTypes;
}
private function createNotFoundException(string $id) : NotFoundExceptionInterface
{
if (!($alternatives = \array_keys($this->factories))) {
$message = 'is empty...';
} else {
$last = \array_pop($alternatives);
if ($alternatives) {
$message = \sprintf('only knows about the "%s" and "%s" services.', \implode('", "', $alternatives), $last);
} else {
$message = \sprintf('only knows about the "%s" service.', $last);
}
}
if ($this->loading) {
$message = \sprintf('The service "%s" has a dependency on a non-existent service "%s". This locator %s', \end($this->loading), $id, $message);
} else {
$message = \sprintf('Service "%s" not found: the current service locator %s', $id, $message);
}
return new class($message) extends \InvalidArgumentException implements NotFoundExceptionInterface
{
};
}
private function createCircularReferenceException(string $id, array $path) : ContainerExceptionInterface
{
return new class(\sprintf('Circular reference detected for service "%s", path: "%s".', $id, \implode(' -> ', $path))) extends \RuntimeException implements ContainerExceptionInterface
{
};
}
}