EmptyDependencyMap.php

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<?php
 
namespace ILIAS\BackgroundTasks\Dependencies\DependencyMap;
 
use ILIAS\BackgroundTasks\Dependencies\Exceptions\NoSuchServiceException;
use ILIAS\DI\Container;
 
class EmptyDependencyMap implements DependencyMap
{
    protected array $maps = [];
 
    public function getDependencyWith(Container $DIC, string $fullyQualifiedDomainName, string $for, callable $map)
    {
        $result = $map($DIC, $fullyQualifiedDomainName, $for);
        if ($result) {
            return $result;
        }
        return $this->getDependency($DIC, $fullyQualifiedDomainName, $for);
    }
 
    public function with(callable $map): DependencyMap
    {
        $dependency_map = new static();
        $dependency_map->maps = array_merge([$map], $this->maps);
 
        return $dependency_map;
    }
 
    public function getDependency(Container $DIC, string $fullyQualifiedDomainName, string $for)
    {
        foreach ($this->maps as $map) {
            $result = $map($DIC, $fullyQualifiedDomainName, $for);
            if ($result) {
                return $result;
            }
        }
 
        throw new NoSuchServiceException("The requested service " . $fullyQualifiedDomainName
            . " could not be resolved.");
    }
}