<?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\ContainerBuilder;
use Symfony\Component\DependencyInjection\Reference;
/**
* Trait that allows a generic method to find and sort service by priority option in the tag.
*
* @author Iltar van der Berg <kjarli@gmail.com>
*/
trait PriorityTaggedServiceTrait
{
/**
* Finds all services with the given tag name and order them by their priority.
*
* The order of additions must be respected for services having the same priority,
* and knowing that the \SplPriorityQueue class does not respect the FIFO method,
* we should not use that class.
*
* @see https://bugs.php.net/53710
* @see https://bugs.php.net/60926
*
* @param string $tagName
*
* @return Reference[]
*/
private function findAndSortTaggedServices($tagName, ContainerBuilder $container)
{
$services = [];
foreach ($container->findTaggedServiceIds($tagName, true) as $serviceId => $attributes) {
$priority = isset($attributes[0]['priority']) ? $attributes[0]['priority'] : 0;
$services[$priority][] = new Reference($serviceId);
}
if ($services) {
krsort($services);
$services = \call_user_func_array('array_merge', $services);
}
return $services;
}
}