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