WS\Utils\Collections\Iterator\IteratorFactory

Complexity

Total Complexity

4

Size/Duplication

Total Lines	23
Duplicated Lines	0 %

Test Coverage

Coverage

100%

Importance

Changes	1
Bugs	0	Features	0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	reverseSequence()	0	9	2
A	directSequence()	0	9	2

<?php
/**
 * @author Maxim Sokolovsky
 */

namespace WS\Utils\Collections\Iterator;

class IteratorFactory
{
    public static function directSequence($length): Iterator
    {
        $current = 0;
        return new CallbackIterator(static function () use (& $current, $length) {
            if ($current === $length) {
                return (new IterateResult())->setAsRunOut();
            }

            return (new IterateResult())->setValue($current++);
        });
    }

    public static function reverseSequence($length): Iterator
    {
        $current = $length - 1;
        return new CallbackIterator(static function () use (& $current) {
            if ($current === -1) {
                return (new IterateResult())->setAsRunOut();
            }

            return (new IterateResult())->setValue($current--);
        });
    }
}