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<?php
/*
* This file is part of the Prophecy.
* (c) Konstantin Kudryashov <ever.zet@gmail.com>
* Marcello Duarte <marcello.duarte@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Prophecy\Promise;
use Prophecy\Prophecy\ObjectProphecy;
use Prophecy\Prophecy\MethodProphecy;
use Prophecy\Exception\InvalidArgumentException;
use Closure;
/**
* Callback promise.
*
* @author Konstantin Kudryashov <ever.zet@gmail.com>
*/
class CallbackPromise implements PromiseInterface
{
private $callback;
/**
* Initializes callback promise.
*
* @param callable $callback Custom callback
*
* @throws \Prophecy\Exception\InvalidArgumentException
*/
public function __construct($callback)
{
if (!is_callable($callback)) {
throw new InvalidArgumentException(sprintf(
'Callable expected as an argument to CallbackPromise, but got %s.',
gettype($callback)
));
}
$this->callback = $callback;
}
/**
* Evaluates promise callback.
*
* @param array $args
* @param ObjectProphecy $object
* @param MethodProphecy $method
*
* @return mixed
*/
public function execute(array $args, ObjectProphecy $object, MethodProphecy $method)
{
$callback = $this->callback;
if ($callback instanceof Closure && method_exists('Closure', 'bind')) {
$callback = Closure::bind($callback, $object);
}
return call_user_func($callback, $args, $object, $method);
}
}