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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\Compiler;

use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Definition;
use Symfony\Component\DependencyInjection\Reference;

/**
 * Propagate the "container.no_preload" tag.
 *
 * @author Nicolas Grekas <[email protected]>
 */
class ResolveNoPreloadPass extends AbstractRecursivePass
{
    private const DO_PRELOAD_TAG = '.container.do_preload';

    protected bool $skipScalars = true;

    private array $resolvedIds = [];

    /**
     * @return void
     */
    public function process(ContainerBuilder $container)
    {
        $this->container = $container;

        try {
            foreach ($container->getDefinitions() as $id => $definition) {
                if ($definition->isPublic() && !$definition->isPrivate() && !isset($this->resolvedIds[$id])) {
                    $this->resolvedIds[$id] = true;
                    $this->processValue($definition, true);
                }
            }

            foreach ($container->getAliases() as $alias) {
                if ($alias->isPublic() && !$alias->isPrivate() && !isset($this->resolvedIds[$id = (string) $alias]) && $container->hasDefinition($id)) {
                    $this->resolvedIds[$id] = true;
                    $this->processValue($container->getDefinition($id), true);
                }
            }
        } finally {
            $this->resolvedIds = [];
            $this->container = null;
        }

        foreach ($container->getDefinitions() as $definition) {
            if ($definition->hasTag(self::DO_PRELOAD_TAG)) {
                $definition->clearTag(self::DO_PRELOAD_TAG);
            } elseif (!$definition->isDeprecated() && !$definition->hasErrors()) {
                $definition->addTag('container.no_preload');
            }
        }
    }

    protected function processValue(mixed $value, bool $isRoot = false): mixed
    {
        if ($value instanceof Reference && ContainerBuilder::IGNORE_ON_UNINITIALIZED_REFERENCE !== $value->getInvalidBehavior() && $this->container->hasDefinition($id = (string) $value)) {
            $definition = $this->container->getDefinition($id);

            if (!isset($this->resolvedIds[$id]) && (!$definition->isPublic() || $definition->isPrivate())) {
                $this->resolvedIds[$id] = true;
                $this->processValue($definition, true);
            }

            return $value;
        }

        if (!$value instanceof Definition) {
            return parent::processValue($value, $isRoot);
        }

        if ($value->hasTag('container.no_preload') || $value->isDeprecated() || $value->hasErrors()) {
            return $value;
        }

        if ($isRoot) {
            $value->addTag(self::DO_PRELOAD_TAG);
        }

        return parent::processValue($value, $isRoot);
    }
}