<?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 Doctrine\Instantiator\Instantiator;
use Prophecy\Prophecy\ObjectProphecy;
use Prophecy\Prophecy\MethodProphecy;
use Prophecy\Exception\InvalidArgumentException;
use ReflectionClass;
/**
* Throw promise.
*
* @author Konstantin Kudryashov <ever.zet@gmail.com>
*/
class ThrowPromise implements PromiseInterface
{
private $exception;
/**
* @var \Doctrine\Instantiator\Instantiator
*/
private $instantiator;
/**
* Initializes promise.
*
* @param string|\Exception|\Throwable $exception Exception class name or instance
*
* @throws \Prophecy\Exception\InvalidArgumentException
*/
public function __construct($exception)
{
if (is_string($exception)) {
if ((!class_exists($exception) && !interface_exists($exception)) || !$this->isAValidThrowable($exception)) {
throw new InvalidArgumentException(sprintf(
'Exception / Throwable class or instance expected as argument to ThrowPromise, but got %s.',
$exception
));
}
} elseif (!$exception instanceof \Exception && !$exception instanceof \Throwable) {
throw new InvalidArgumentException(sprintf(
'Exception / Throwable class or instance expected as argument to ThrowPromise, but got %s.',
is_object($exception) ? get_class($exception) : gettype($exception)
));
}
$this->exception = $exception;
}
/**
* Throws predefined exception.
*
* @param array $args
* @param ObjectProphecy $object
* @param MethodProphecy $method
*
* @throws object
*/
public function execute(array $args, ObjectProphecy $object, MethodProphecy $method)
{
if (is_string($this->exception)) {
$classname = $this->exception;
$reflection = new ReflectionClass($classname);
$constructor = $reflection->getConstructor();
if ($constructor->isPublic() && 0 == $constructor->getNumberOfRequiredParameters()) {
throw $reflection->newInstance();
}
if (!$this->instantiator) {
$this->instantiator = new Instantiator();
}
throw $this->instantiator->instantiate($classname);
}
throw $this->exception;
}
/**
* @param string $exception
*
* @return bool
*/
private function isAValidThrowable($exception)
{
return is_a($exception, 'Exception', true)
|| is_a($exception, 'Throwable', true);
}
}