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vendor/symfony/http-kernel/Bundle/Bundle.php

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+<?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\Component\HttpKernel\Bundle;
+
+use Symfony\Component\Console\Application;
+use Symfony\Component\DependencyInjection\Container;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\DependencyInjection\Extension\ExtensionInterface;
+
+/**
+ * An implementation of BundleInterface that adds a few conventions for DependencyInjection extensions.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+abstract class Bundle implements BundleInterface
+{
+    protected $name;
+    protected $extension;
+    protected $path;
+    private string $namespace;
+
+    /**
+     * @var ContainerInterface|null
+     */
+    protected $container;
+
+    /**
+     * @return void
+     */
+    public function boot()
+    {
+    }
+
+    /**
+     * @return void
+     */
+    public function shutdown()
+    {
+    }
+
+    /**
+     * This method can be overridden to register compilation passes,
+     * other extensions, ...
+     *
+     * @return void
+     */
+    public function build(ContainerBuilder $container)
+    {
+    }
+
+    /**
+     * Returns the bundle's container extension.
+     *
+     * @throws \LogicException
+     */
+    public function getContainerExtension(): ?ExtensionInterface
+    {
+        if (!isset($this->extension)) {
+            $extension = $this->createContainerExtension();
+
+            if (null !== $extension) {
+                if (!$extension instanceof ExtensionInterface) {
+                    throw new \LogicException(sprintf('Extension "%s" must implement Symfony\Component\DependencyInjection\Extension\ExtensionInterface.', get_debug_type($extension)));
+                }
+
+                // check naming convention
+                $basename = preg_replace('/Bundle$/', '', $this->getName());
+                $expectedAlias = Container::underscore($basename);
+
+                if ($expectedAlias != $extension->getAlias()) {
+                    throw new \LogicException(sprintf('Users will expect the alias of the default extension of a bundle to be the underscored version of the bundle name ("%s"). You can override "Bundle::getContainerExtension()" if you want to use "%s" or another alias.', $expectedAlias, $extension->getAlias()));
+                }
+
+                $this->extension = $extension;
+            } else {
+                $this->extension = false;
+            }
+        }
+
+        return $this->extension ?: null;
+    }
+
+    public function getNamespace(): string
+    {
+        if (!isset($this->namespace)) {
+            $this->parseClassName();
+        }
+
+        return $this->namespace;
+    }
+
+    public function getPath(): string
+    {
+        if (!isset($this->path)) {
+            $reflected = new \ReflectionObject($this);
+            $this->path = \dirname($reflected->getFileName());
+        }
+
+        return $this->path;
+    }
+
+    /**
+     * Returns the bundle name (the class short name).
+     */
+    final public function getName(): string
+    {
+        if (!isset($this->name)) {
+            $this->parseClassName();
+        }
+
+        return $this->name;
+    }
+
+    /**
+     * @return void
+     */
+    public function registerCommands(Application $application)
+    {
+    }
+
+    /**
+     * Returns the bundle's container extension class.
+     */
+    protected function getContainerExtensionClass(): string
+    {
+        $basename = preg_replace('/Bundle$/', '', $this->getName());
+
+        return $this->getNamespace().'\\DependencyInjection\\'.$basename.'Extension';
+    }
+
+    /**
+     * Creates the bundle's container extension.
+     */
+    protected function createContainerExtension(): ?ExtensionInterface
+    {
+        return class_exists($class = $this->getContainerExtensionClass()) ? new $class() : null;
+    }
+
+    private function parseClassName(): void
+    {
+        $pos = strrpos(static::class, '\\');
+        $this->namespace = false === $pos ? '' : substr(static::class, 0, $pos);
+        $this->name ??= false === $pos ? static::class : substr(static::class, $pos + 1);
+    }
+
+    public function setContainer(?ContainerInterface $container): void
+    {
+        $this->container = $container;
+    }
+}