<?php

declare(strict_types=1);

/*
 * This file is part of the league/commonmark package.
 *
 * (c) Colin O'Dell <colinodell@gmail.com>
 *
 * Additional emphasis processing code based on commonmark-java (https://github.com/atlassian/commonmark-java)
 *  - (c) Atlassian Pty Ltd
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace League\CommonMark\Tests\Functional\Delimiter;

use League\CommonMark\Node\Inline\Text;
use League\CommonMark\Node\Node;
use League\CommonMark\Renderer\ChildNodeRendererInterface;
use League\CommonMark\Renderer\NodeRendererInterface;

final class UppercaseTextRenderer implements NodeRendererInterface
{
    /**
     * {@inheritDoc}
     */
    public function render(Node $node, ChildNodeRendererInterface $childRenderer)
    {
        if (! ($node instanceof UppercaseText)) {
            throw new \InvalidArgumentException('Incompatible node type: ' . \get_class($node));
        }

        foreach ($node->children() as $child) {
            if ($child instanceof Text) {
                $child->setLiteral(\mb_strtoupper($child->getLiteral()));
            }
        }

        return $childRenderer->renderNodes($node->children());
    }
}
