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<?php
namespace Psr7Middlewares\Transformers;
/**
* Generic resolver to get transformers.
*/
abstract class Resolver implements ResolverInterface
{
protected $transformers = [];
* Add a new transformer.
*
* @param string $id
* @param callable $resolver
public function add($id, callable $resolver)
$this->transformers[$id] = $resolver;
}
* Resolves the id and returns a transformer or null.
* @return callable|null
public function resolve($id)
if (isset($this->transformers[$id])) {
return $this->transformers[$id];
oscarotero /
psr7-middlewares
