initial commit

lib/packages/League/Container/ServiceProvider/ServiceProviderAggregate.php

@@ -0,0 +1,106 @@
+<?php declare(strict_types=1);
+
+namespace Automattic\WooCommerce\Vendor\League\Container\ServiceProvider;
+
+use Generator;
+use Automattic\WooCommerce\Vendor\League\Container\{ContainerAwareInterface, ContainerAwareTrait};
+use Automattic\WooCommerce\Vendor\League\Container\Exception\ContainerException;
+
+class ServiceProviderAggregate implements ServiceProviderAggregateInterface
+{
+    use ContainerAwareTrait;
+
+    /**
+     * @var ServiceProviderInterface[]
+     */
+    protected $providers = [];
+
+    /**
+     * @var array
+     */
+    protected $registered = [];
+
+    /**
+     * {@inheritdoc}
+     */
+    public function add($provider) : ServiceProviderAggregateInterface
+    {
+        if (is_string($provider) && $this->getContainer()->has($provider)) {
+            $provider = $this->getContainer()->get($provider);
+        } elseif (is_string($provider) && class_exists($provider)) {
+            $provider = new $provider;
+        }
+
+        if (in_array($provider, $this->providers, true)) {
+            return $this;
+        }
+
+        if ($provider instanceof ContainerAwareInterface) {
+            $provider->setLeagueContainer($this->getLeagueContainer());
+        }
+
+        if ($provider instanceof BootableServiceProviderInterface) {
+            $provider->boot();
+        }
+
+        if ($provider instanceof ServiceProviderInterface) {
+            $this->providers[] = $provider;
+
+            return $this;
+        }
+
+        throw new ContainerException(
+            'A service provider must be a fully qualified class name or instance ' .
+            'of (\Automattic\WooCommerce\Vendor\League\Container\ServiceProvider\ServiceProviderInterface)'
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function provides(string $service) : bool
+    {
+        foreach ($this->getIterator() as $provider) {
+            if ($provider->provides($service)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getIterator() : Generator
+    {
+        $count = count($this->providers);
+
+        for ($i = 0; $i < $count; $i++) {
+            yield $this->providers[$i];
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function register(string $service)
+    {
+        if (false === $this->provides($service)) {
+            throw new ContainerException(
+                sprintf('(%s) is not provided by a service provider', $service)
+            );
+        }
+
+        foreach ($this->getIterator() as $provider) {
+            if (in_array($provider->getIdentifier(), $this->registered, true)) {
+                continue;
+            }
+
+            if ($provider->provides($service)) {
+                $provider->register();
+                $this->registered[] = $provider->getIdentifier();
+            }
+        }
+    }
+}