<?php
declare(strict_types=1);
namespace Metadata\Driver;
use Metadata\ClassMetadata;
final class DriverChain implements AdvancedDriverInterface
{
/**
* @var DriverInterface[]
*/
private $drivers;
/**
* @param DriverInterface[] $drivers
*/
public function __construct(array $drivers = [])
{
$this->drivers = $drivers;
}
public function addDriver(DriverInterface $driver): void
{
$this->drivers[] = $driver;
}
public function loadMetadataForClass(\ReflectionClass $class): ?ClassMetadata
{
foreach ($this->drivers as $driver) {
if (null !== $metadata = $driver->loadMetadataForClass($class)) {
return $metadata;
}
}
return null;
}
/**
* {@inheritDoc}
*/
public function getAllClassNames(): array
{
$classes = [];
foreach ($this->drivers as $driver) {
if (!$driver instanceof AdvancedDriverInterface) {
throw new \RuntimeException(
sprintf(
'Driver "%s" must be an instance of "AdvancedDriverInterface" to use ' .
'"DriverChain::getAllClassNames()".',
get_class($driver)
)
);
}
$driverClasses = $driver->getAllClassNames();
if (!empty($driverClasses)) {
$classes = array_merge($classes, $driverClasses);
}
}
return $classes;
}
}