<?php
/*
* This file is part of the StateMachine package.
*
* (c) Alexandre Bacco
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SM\Callback;
use SM\SMException;
class CallbackFactory implements CallbackFactoryInterface
{
/**
* @var string
*/
protected $class;
/**
* @throws SMException
*/
public function __construct(string $class)
{
if (!class_exists($class)) {
throw new SMException(sprintf(
'Class %s given to CallbackFactory does not exist.',
$class
));
}
$this->class = $class;
}
/**
* {@inheritDoc}
*/
public function get(array $specs): CallbackInterface
{
if (!isset($specs['do'])) {
throw new SMException(sprintf(
'CallbackFactory::get needs the index "do" to be able to build a callback, array %s given.',
json_encode($specs)
));
}
$class = $this->class;
return new $class($specs, $specs['do']);
}
}