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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\ContainerAwareTrait;
use Symfony\Component\DependencyInjection\ContainerBuilder;
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
{
use ContainerAwareTrait;
protected $name;
protected $extension;
protected $path;
private $namespace;
/**
* {@inheritdoc}
*/
public function boot()
{
}
/**
* {@inheritdoc}
*/
public function shutdown()
{
}
/**
* {@inheritdoc}
*
* This method can be overridden to register compilation passes,
* other extensions, ...
*/
public function build(ContainerBuilder $container)
{
}
/**
* Returns the bundle's container extension.
*
* @return ExtensionInterface|null The container extension
*
* @throws \LogicException
*/
public function getContainerExtension()
{
if (null === $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_class($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;
}
/**
* {@inheritdoc}
*/
public function getNamespace()
{
if (null === $this->namespace) {
$this->parseClassName();
}
return $this->namespace;
}
/**
* {@inheritdoc}
*/
public function getPath()
{
if (null === $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 (null === $this->name) {
$this->parseClassName();
}
return $this->name;
}
public function registerCommands(Application $application)
{
}
/**
* Returns the bundle's container extension class.
*
* @return string
*/
protected function getContainerExtensionClass()
{
$basename = preg_replace('/Bundle$/', '', $this->getName());
return $this->getNamespace().'\\DependencyInjection\\'.$basename.'Extension';
}
/**
* Creates the bundle's container extension.
*
* @return ExtensionInterface|null
*/
protected function createContainerExtension()
{
return class_exists($class = $this->getContainerExtensionClass()) ? new $class() : null;
}
private function parseClassName()
{
$pos = strrpos(static::class, '\\');
$this->namespace = false === $pos ? '' : substr(static::class, 0, $pos);
if (null === $this->name) {
$this->name = false === $pos ? static::class : substr(static::class, $pos + 1);
}
}
}
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