Current File : //www/varak.net/nextcloud.varak.net/3rdparty/fusonic/linq/src/Fusonic/Linq/Helper/LinqHelper.php
<?php
/*
* This file is part of Fusonic-linq.
* https://github.com/fusonic/fusonic-linq
*
* (c) Fusonic GmbH
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Fusonic\Linq\Helper;
use ArrayIterator;
use InvalidArgumentException;
use UnexpectedValueException;
class LinqHelper
{
const MODE_ASSERT = 'MODE_ASSERT';
const MODE_NULL = 'MODE_NULL';
const LINQ_ORDER_ASC = 'asc';
const LINQ_ORDER_DESC = 'desc';
const LINQ_ORDER_TYPE_NUMERIC = 1;
const LINQ_ORDER_TYPE_ALPHANUMERIC = 2;
const LINQ_ORDER_TYPE_DATETIME = 3;
public static function getBoolOrThrowException($returned)
{
if (!is_bool($returned)) {
throw new UnexpectedValueException("Return type of filter func must be boolean.");
}
return $returned;
}
public static function assertArgumentIsIterable($param, $argumentName)
{
if (!self::isIterable($param)) {
throw new InvalidArgumentException("Argument must be an array, or implement either the \IteratorAggregate or \Iterator interface. ArgumentName = " . $argumentName);
}
}
public static function getIteratorOrThrow($value)
{
if (is_array($value)) {
return new ArrayIterator($value);
}
else if($value instanceof \IteratorAggregate) {
return $value->getIterator();
}
else if($value instanceof \Iterator) {
return $value;
}
throw new \UnexpectedValueException("Value must be an array, or implement either the \IteratorAggregate or \Iterator interface");
}
public static function isIterable($param)
{
return is_array($param)
|| $param instanceof \IteratorAggregate
|| $param instanceof \Iterator;
}
}
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