1 files changed, 128 insertions, 0 deletions
diff --git a/vendor/symfony/service-contracts/ServiceLocatorTrait.php b/vendor/symfony/service-contracts/ServiceLocatorTrait.php
new file mode 100644
index 0000000..74dfa43
--- /dev/null
+++ b/vendor/symfony/service-contracts/ServiceLocatorTrait.php
@@ -0,0 +1,128 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Contracts\Service;
+
+use Psr\Container\ContainerExceptionInterface;
+use Psr\Container\NotFoundExceptionInterface;
+
+// Help opcache.preload discover always-needed symbols
+class_exists(ContainerExceptionInterface::class);
+class_exists(NotFoundExceptionInterface::class);
+
+/**
+ * A trait to help implement ServiceProviderInterface.
+ *
+ * @author Robin Chalas <robin.chalas@gmail.com>
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+trait ServiceLocatorTrait
+{
+    private $factories;
+    private $loading = [];
+    private $providedTypes;
+
+    /**
+     * @param callable[] $factories
+     */
+    public function __construct(array $factories)
+    {
+        $this->factories = $factories;
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @return bool
+     */
+    public function has(string $id)
+    {
+        return isset($this->factories[$id]);
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @return mixed
+     */
+    public function get(string $id)
+    {
+        if (!isset($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]);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    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 {
+        };
+    }
+}