<?php
declare(strict_types=1);
namespace League\CommonMark\Extension\CommonMark\Parser\Inline;
use League\CommonMark\Node\Inline\Newline;
use League\CommonMark\Node\Inline\Text;
use League\CommonMark\Parser\Inline\InlineParserInterface;
use League\CommonMark\Parser\Inline\InlineParserMatch;
use League\CommonMark\Parser\InlineParserContext;
use League\CommonMark\Util\RegexHelper;
final class EscapableParser implements InlineParserInterface
{
public function getMatchDefinition(): InlineParserMatch
{
return InlineParserMatch::string('\\');
}
public function parse(InlineParserContext $inlineContext): bool
{
$cursor = $inlineContext->getCursor();
$nextChar = $cursor->peek();
if ($nextChar === "\n") {
$cursor->advanceBy(2);
$inlineContext->getContainer()->appendChild(new Newline(Newline::HARDBREAK));
return true;
}
if ($nextChar !== null && RegexHelper::isEscapable($nextChar)) {
$cursor->advanceBy(2);
$inlineContext->getContainer()->appendChild(new Text($nextChar));
return true;
}
$cursor->advanceBy(1);
$inlineContext->getContainer()->appendChild(new Text('\\'));
return true;
}
}