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