1<?php
2
3/*
4 * This file is part of the league/commonmark package.
5 *
6 * (c) Colin O'Dell <colinodell@gmail.com>
7 * (c) 2015 Martin Hasoň <martin.hason@gmail.com>
8 *
9 * For the full copyright and license information, please view the LICENSE
10 * file that was distributed with this source code.
11 */
12
13declare(strict_types=1);
14
15namespace League\CommonMark\Extension\Attributes\Parser;
16
17use League\CommonMark\Extension\Attributes\Util\AttributesHelper;
18use League\CommonMark\Parser\Block\BlockStart;
19use League\CommonMark\Parser\Block\BlockStartParserInterface;
20use League\CommonMark\Parser\Cursor;
21use League\CommonMark\Parser\MarkdownParserStateInterface;
22
23final class AttributesBlockStartParser implements BlockStartParserInterface
24{
25    public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart
26    {
27        $originalPosition = $cursor->getPosition();
28        $attributes       = AttributesHelper::parseAttributes($cursor);
29
30        if ($attributes === [] && $originalPosition === $cursor->getPosition()) {
31            return BlockStart::none();
32        }
33
34        if ($cursor->getNextNonSpaceCharacter() !== null) {
35            return BlockStart::none();
36        }
37
38        return BlockStart::of(new AttributesBlockContinueParser($attributes, $parserState->getActiveBlockParser()->getBlock()))->at($cursor);
39    }
40}
41