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File Name : PhpFileLoader.php

<?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\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 <fabien@symfony.com>
 */
class PhpFileLoader extends FileLoader
{
    protected $autoRegisterAliasesForSinglyImplementedInterfaces = false;
    private ?ConfigBuilderGeneratorInterface $generator;

public function __construct(ContainerBuilder $container, FileLocatorInterface $locator, ?string $env = null, ?ConfigBuilderGeneratorInterface $generator = null)
    {
        parent::__construct($container, $locator, $env);
        $this->generator = $generator;
    }

public function load(mixed $resource, ?string $type = null): mixed
    {
        // 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);

$instanceof = $this->instanceof;
        $this->instanceof = [];

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 = $instanceof;
            $this->registerAliasesForSinglyImplementedInterfaces();
        }

return null;
    }

public function supports(mixed $resource, ?string $type = null): bool
    {
        if (!\is_string($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): void
    {
        $callback = $callback(...);
        $arguments = [];
        $configBuilders = [];
        $r = new \ReflectionFunction($callback);

$attribute = null;
        foreach ($r->getAttributes(When::class, \ReflectionAttribute::IS_INSTANCEOF) 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;
                case 'string':
                    if (null !== $this->env && 'env' === $parameter->getName()) {
                        $arguments[] = $this->env;
                        break;
                    }
                    // no 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 don't know how to handle this
        if (!str_starts_with($namespace, 'Symfony\\Config\\')) {
            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 (str_contains($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(fn (ExtensionInterface $ext) => $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
{
}

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2026-03-30 04:39:36
..	dir	-	root/root	0755	2026-03-30 04:39:36
Configurator	dir	-	root/root	0755	2026-03-30 04:39:36
schema	dir	-	root/root	0755	2026-03-30 04:39:36
ClosureLoader.php	text/x-php	1.09 KB	root/root	0644	2026-03-30 04:39:36
DirectoryLoader.php	text/x-php	1.26 KB	root/root	0644	2026-03-30 04:39:36
FileLoader.php	text/x-php	14.84 KB	root/root	0644	2026-03-30 04:39:36
GlobFileLoader.php	text/x-php	850 B	root/root	0644	2026-03-30 04:39:36
IniFileLoader.php	text/x-php	3.15 KB	root/root	0644	2026-03-30 04:39:36
PhpFileLoader.php	text/x-php	8.31 KB	root/root	0644	2026-03-30 04:39:36
XmlFileLoader.php	text/x-php	38.66 KB	root/root	0644	2026-03-30 04:39:36
YamlFileLoader.php	text/x-php	41.89 KB	root/root	0644	2026-03-30 04:39:36

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