✏️ Editing: CheckDefinitionValidityPass.php Read Only

<?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\Compiler;

use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Exception\RuntimeException;

/**
 * This pass validates each definition individually only taking the information
 * into account which is contained in the definition itself.
 *
 * Later passes can rely on the following, and specifically do not need to
 * perform these checks themselves:
 *
 * - non synthetic, non abstract services always have a class set
 * - synthetic services are always public
 * - synthetic services are always of non-prototype scope
 *
 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
 */
class CheckDefinitionValidityPass implements CompilerPassInterface
{
    /**
     * Processes the ContainerBuilder to validate the Definition.
     *
     * @param ContainerBuilder $container
     *
     * @throws RuntimeException When the Definition is invalid
     */
    public function process(ContainerBuilder $container)
    {
        foreach ($container->getDefinitions() as $id => $definition) {
            // synthetic service is public
            if ($definition->isSynthetic() && !$definition->isPublic()) {
                throw new RuntimeException(sprintf(
                    'A synthetic service ("%s") must be public.',
                    $id
                ));
            }

// synthetic service has non-prototype scope
            if ($definition->isSynthetic() && ContainerInterface::SCOPE_PROTOTYPE === $definition->getScope()) {
                throw new RuntimeException(sprintf(
                    'A synthetic service ("%s") cannot be of scope "prototype".',
                    $id
                ));
            }

// non-synthetic, non-abstract service has class
            if (!$definition->isAbstract() && !$definition->isSynthetic() && !$definition->getClass()) {
                if ($definition->getFactoryClass() || $definition->getFactoryService()) {
                    throw new RuntimeException(sprintf(
                        'Please add the class to service "%s" even if it is constructed by a factory '
                       .'since we might need to add method calls based on compile-time checks.',
                       $id
                    ));
                }

throw new RuntimeException(sprintf(
                    'The definition for "%s" has no class. If you intend to inject '
                   .'this service dynamically at runtime, please mark it as synthetic=true. '
                   .'If this is an abstract definition solely used by child definitions, '
                   .'please add abstract=true, otherwise specify a class to get rid of this error.',
                   $id
                ));
            }

// tag attribute values must be scalars
            foreach ($definition->getTags() as $name => $tags) {
                foreach ($tags as $attributes) {
                    foreach ($attributes as $attribute => $value) {
                        if (!is_scalar($value) && null !== $value) {
                            throw new RuntimeException(sprintf('A "tags" attribute must be of a scalar-type for service "%s", tag "%s", attribute "%s".', $id, $name, $attribute));
                        }
                    }
                }
            }
        }
    }
}

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