InfoCollection.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\Conditions\Export;
 
use Countable;
use Iterator;
 
class InfoCollection implements Countable, Iterator
{
    protected int $index;
    protected array $elements;
 
    public function __construct()
    {
        $this->index = 0;
        $this->elements = [];
    }
 
    public function current(): Info
    {
        return $this->elements[$this->index];
    }
 
    public function next(): void
    {
        $this->index++;
    }
 
    public function key(): int
    {
        return $this->index;
    }
 
    public function valid(): bool
    {
        return isset($this->elements[$this->index]);
    }
 
    public function rewind(): void
    {
        $this->index = 0;
    }
 
    public function count(): int
    {
        return count($this->elements);
    }
 
    public function withInfo(
        Info $info
    ): InfoCollection {
        $clone = clone $this;
        $clone->elements[] = $info;
        return $clone;
    }
}