41 lines
1.2 KiB
PHP
41 lines
1.2 KiB
PHP
<?php
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declare(strict_types=1);
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/*
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* This file is part of the league/commonmark package.
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*
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* (c) Colin O'Dell <colinodell@gmail.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace League\CommonMark\Extension\CommonMark\Parser\Block;
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use League\CommonMark\Parser\Block\BlockStart;
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use League\CommonMark\Parser\Block\BlockStartParserInterface;
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use League\CommonMark\Parser\Cursor;
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use League\CommonMark\Parser\MarkdownParserStateInterface;
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final class FencedCodeStartParser implements BlockStartParserInterface
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{
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public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart
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{
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if ($cursor->isIndented() || ! \in_array($cursor->getNextNonSpaceCharacter(), ['`', '~'], true)) {
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return BlockStart::none();
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}
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$indent = $cursor->getIndent();
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$fence = $cursor->match('/^[ \t]*(?:`{3,}(?!.*`)|~{3,})/');
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if ($fence === null) {
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return BlockStart::none();
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}
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// fenced code block
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$fence = \ltrim($fence, " \t");
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return BlockStart::of(new FencedCodeParser(\strlen($fence), $fence[0], $indent))->at($cursor);
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}
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}
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