CurrentObjectPathStack.php

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<?php
 
declare(strict_types=1);
 
/*
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */
 
namespace ‪TYPO3\CMS\Core\TypoScript\AST\CurrentObjectPath;
 
final class ‪CurrentObjectPathStack
{
    private array ‪$stack = [];
    private int ‪$stackSize = 0;
 
    public function ‪push(‪CurrentObjectPath ‪$path): void
    {
        $this->stack[] = ‪$path;
        $this->stackSize++;
    }
 
    public function ‪pop(): ‪CurrentObjectPath
    {
        if ($this->stackSize === 1) {
            // Never pop the very last element off from the stack. This is the
            // RootNode. This prevents errors when TypoScript has a closing
            // curly bracket '}' too much.
            return $this->‪getCurrent();
        }
        array_pop($this->stack);
        $this->stackSize--;
        return $this->‪getCurrent();
    }
 
    public function ‪getCurrent(): ‪CurrentObjectPath
    {
        return $this->stack[array_key_last($this->stack)];
    }
 
    public function ‪getFirst(): ‪CurrentObjectPath
    {
        return reset($this->stack);
    }
}