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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\DependencyInjection\Loader;
use Symfony\Component\Config\Builder\ConfigBuilderGenerator;
use Symfony\Component\Config\Builder\ConfigBuilderGeneratorInterface;
use Symfony\Component\Config\Builder\ConfigBuilderInterface;
use Symfony\Component\Config\FileLocatorInterface;
use Symfony\Component\DependencyInjection\Attribute\When;
use Symfony\Component\DependencyInjection\Container;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
use Symfony\Component\DependencyInjection\Extension\ConfigurationExtensionInterface;
use Symfony\Component\DependencyInjection\Extension\ExtensionInterface;
use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
/**
* PhpFileLoader loads service definitions from a PHP file.
*
* The PHP file is required and the $container variable can be
* used within the file to change the container.
*
* @author Fabien Potencier <[email protected]>
*/
class PhpFileLoader extends FileLoader
{
protected $autoRegisterAliasesForSinglyImplementedInterfaces = false;
private $generator;
public function __construct(ContainerBuilder $container, FileLocatorInterface $locator, string $env = null, ConfigBuilderGeneratorInterface $generator = null)
{
parent::__construct($container, $locator, $env);
$this->generator = $generator;
}
/**
* {@inheritdoc}
*/
public function load($resource, string $type = null)
{
// the container and loader variables are exposed to the included file below
$container = $this->container;
$loader = $this;
$path = $this->locator->locate($resource);
$this->setCurrentDir(\dirname($path));
$this->container->fileExists($path);
// the closure forbids access to the private scope in the included file
$load = \Closure::bind(function ($path, $env) use ($container, $loader, $resource, $type) {
return include $path;
}, $this, ProtectedPhpFileLoader::class);
try {
$callback = $load($path, $this->env);
if (\is_object($callback) && \is_callable($callback)) {
$this->executeCallback($callback, new ContainerConfigurator($this->container, $this, $this->instanceof, $path, $resource, $this->env), $path);
}
} finally {
$this->instanceof = [];
$this->registerAliasesForSinglyImplementedInterfaces();
}
return null;
}
/**
* {@inheritdoc}
*/
public function supports($resource, string $type = null)
{
if (!\is_string($resource)) {
return false;
}
if (null === $type && 'php' === pathinfo($resource, \PATHINFO_EXTENSION)) {
return true;
}
return 'php' === $type;
}
/**
* Resolve the parameters to the $callback and execute it.
*/
private function executeCallback(callable $callback, ContainerConfigurator $containerConfigurator, string $path)
{
if (!$callback instanceof \Closure) {
$callback = \Closure::fromCallable($callback);
}
$arguments = [];
$configBuilders = [];
$r = new \ReflectionFunction($callback);
if (\PHP_VERSION_ID >= 80000) {
$attribute = null;
foreach ($r->getAttributes(When::class) as $attribute) {
if ($this->env === $attribute->newInstance()->env) {
$attribute = null;
break;
}
}
if (null !== $attribute) {
return;
}
}
foreach ($r->getParameters() as $parameter) {
$reflectionType = $parameter->getType();
if (!$reflectionType instanceof \ReflectionNamedType) {
throw new \InvalidArgumentException(sprintf('Could not resolve argument "$%s" for "%s". You must typehint it (for example with "%s" or "%s").', $parameter->getName(), $path, ContainerConfigurator::class, ContainerBuilder::class));
}
$type = $reflectionType->getName();
switch ($type) {
case ContainerConfigurator::class:
$arguments[] = $containerConfigurator;
break;
case ContainerBuilder::class:
$arguments[] = $this->container;
break;
case FileLoader::class:
case self::class:
$arguments[] = $this;
break;
default:
try {
$configBuilder = $this->configBuilder($type);
} catch (InvalidArgumentException|\LogicException $e) {
throw new \InvalidArgumentException(sprintf('Could not resolve argument "%s" for "%s".', $type.' $'.$parameter->getName(), $path), 0, $e);
}
$configBuilders[] = $configBuilder;
$arguments[] = $configBuilder;
}
}
// Force load ContainerConfigurator to make env(), param() etc available.
class_exists(ContainerConfigurator::class);
$callback(...$arguments);
/** @var ConfigBuilderInterface $configBuilder */
foreach ($configBuilders as $configBuilder) {
$containerConfigurator->extension($configBuilder->getExtensionAlias(), $configBuilder->toArray());
}
}
/**
* @param string $namespace FQCN string for a class implementing ConfigBuilderInterface
*/
private function configBuilder(string $namespace): ConfigBuilderInterface
{
if (!class_exists(ConfigBuilderGenerator::class)) {
throw new \LogicException('You cannot use the config builder as the Config component is not installed. Try running "composer require symfony/config".');
}
if (null === $this->generator) {
throw new \LogicException('You cannot use the ConfigBuilders without providing a class implementing ConfigBuilderGeneratorInterface.');
}
// If class exists and implements ConfigBuilderInterface
if (class_exists($namespace) && is_subclass_of($namespace, ConfigBuilderInterface::class)) {
return new $namespace();
}
// If it does not start with Symfony\Config\ we dont know how to handle this
if ('Symfony\\Config\\' !== substr($namespace, 0, 15)) {
throw new InvalidArgumentException(sprintf('Could not find or generate class "%s".', $namespace));
}
// Try to get the extension alias
$alias = Container::underscore(substr($namespace, 15, -6));
if (false !== strpos($alias, '\\')) {
throw new InvalidArgumentException('You can only use "root" ConfigBuilders from "Symfony\\Config\\" namespace. Nested classes like "Symfony\\Config\\Framework\\CacheConfig" cannot be used.');
}
if (!$this->container->hasExtension($alias)) {
$extensions = array_filter(array_map(function (ExtensionInterface $ext) { return $ext->getAlias(); }, $this->container->getExtensions()));
throw new InvalidArgumentException(sprintf('There is no extension able to load the configuration for "%s". Looked for namespace "%s", found "%s".', $namespace, $alias, $extensions ? implode('", "', $extensions) : 'none'));
}
$extension = $this->container->getExtension($alias);
if (!$extension instanceof ConfigurationExtensionInterface) {
throw new \LogicException(sprintf('You cannot use the config builder for "%s" because the extension does not implement "%s".', $namespace, ConfigurationExtensionInterface::class));
}
$configuration = $extension->getConfiguration([], $this->container);
$loader = $this->generator->build($configuration);
return $loader();
}
}
/**
* @internal
*/
final class ProtectedPhpFileLoader extends PhpFileLoader
{
}
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