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InjectableTrait.php
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InjectableTrait.php
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<?php
/**
* This file is part of the Phở package.
*
* (c) Emre Sokullu <emre@phonetworks.org>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Pho\Framework;
use Pho\Framework\Exceptions\InjectionUnavailableException;
/**
* Injectable is a key extensibility comnponent of the Pho Framework.
*
* This is defined in pho-framework, and not pho-lib-graph, because it is not
* necessarily a core use-case of general purpose graphs.
*
* @author Emre Sokullu <emre@phonetworks.org>
*/
trait InjectableTrait
{
/**
* Injected values
*
* As string key, mixed value.
*
* @var array
*/
protected $injectables = [];
/**
* Injects a value to the subject
*
* @param string $key The key to call the injectable
* @param mixed $value The injectable itself.
*
* @return void
*/
public function inject(string $key, /*mixed*/ $value): void
{
$this->injectables[$key] = $value;
}
protected function injection(string $key) //: mixed
{
if(!isset($this->injectables[$key])) {
throw new InjectionUnavailableException($key);
}
return $this->injectables[$key];
}
}