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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Stdlib\Guard;
use Traversable;
/**
* Static guard helper class
*
* Bridges the gap for allowing refactoring until traits can be used by default.
*
* @deprecated
*/
abstract class GuardUtils
{
const DEFAULT_EXCEPTION_CLASS = 'Zend\Stdlib\Exception\InvalidArgumentException';
/**
* Verifies that the data is an array or Traversable
*
* @param mixed $data the data to verify
* @param string $dataName the data name
* @param string $exceptionClass FQCN for the exception
* @throws \Exception
*/
public static function guardForArrayOrTraversable(
$data,
$dataName = 'Argument',
$exceptionClass = self::DEFAULT_EXCEPTION_CLASS
) {
if (!is_array($data) && !($data instanceof Traversable)) {
$message = sprintf(
'%s must be an array or Traversable, [%s] given',
$dataName,
is_object($data) ? get_class($data) : gettype($data)
);
throw new $exceptionClass($message);
}
}
/**
* Verify that the data is not empty
*
* @param mixed $data the data to verify
* @param string $dataName the data name
* @param string $exceptionClass FQCN for the exception
* @throws \Exception
*/
public static function guardAgainstEmpty(
$data,
$dataName = 'Argument',
$exceptionClass = self::DEFAULT_EXCEPTION_CLASS
) {
if (empty($data)) {
$message = sprintf('%s cannot be empty', $dataName);
throw new $exceptionClass($message);
}
}
/**
* Verify that the data is not null
*
* @param mixed $data the data to verify
* @param string $dataName the data name
* @param string $exceptionClass FQCN for the exception
* @throws \Exception
*/
public static function guardAgainstNull(
$data,
$dataName = 'Argument',
$exceptionClass = self::DEFAULT_EXCEPTION_CLASS
) {
if (null === $data) {
$message = sprintf('%s cannot be null', $dataName);
throw new $exceptionClass($message);
}
}
}