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<?php
/**
* Constraint callback option
*
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\Validator\Constraint\Option;
class Callback implements \Magento\Framework\Validator\Constraint\OptionInterface
{
/**
* @var callable
*/
protected $_callable;
/**
* @var array
*/
protected $_arguments;
/**
* @var bool
*/
protected $_createInstance;
/**
* Create callback
*
* @param callable $callable
* @param mixed $arguments
* @param bool $createInstance If true than $callable[0] will be evaluated to new instance of class when get value
*/
public function __construct($callable, $arguments = null, $createInstance = false)
{
$this->_callable = $callable;
$this->setArguments($arguments);
$this->_createInstance = $createInstance;
}
/**
* Set callback arguments
*
* @param mixed $arguments
* @return void
*/
public function setArguments($arguments = null)
{
if (is_array($arguments)) {
$this->_arguments = $arguments;
} elseif (null !== $arguments) {
$this->_arguments = [$arguments];
} else {
$this->_arguments = null;
}
}
/**
* Get callback value
*
* @return mixed
* @throws \InvalidArgumentException
*/
public function getValue()
{
$callable = $this->_callable;
if (is_array($callable) && isset($callable[0]) && is_string($callable[0])) {
if (!class_exists($callable[0])) {
throw new \InvalidArgumentException(sprintf('Class "%s" was not found', $callable[0]));
}
if ($this->_createInstance) {
$callable[0] = new $callable[0]();
}
} elseif ($this->_createInstance) {
throw new \InvalidArgumentException('Callable expected to be an array with class name as first element');
}
if (!is_callable($callable)) {
throw new \InvalidArgumentException('Callback does not callable');
}
if ($this->_arguments) {
return call_user_func_array($callable, $this->_arguments);
} else {
return call_user_func($callable);
}
}
}