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<?php declare(strict_types=1); /* * This file is part of the league/commonmark package. * * (c) Colin O'Dell <colinodell@gmail.com> * * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js) * - (c) John MacFarlane * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace League\CommonMark\Extension\CommonMark\Parser\Inline; use League\CommonMark\Extension\CommonMark\Node\Inline\Code; use League\CommonMark\Node\Inline\Text; use League\CommonMark\Parser\Inline\InlineParserInterface; use League\CommonMark\Parser\Inline\InlineParserMatch; use League\CommonMark\Parser\InlineParserContext; final class BacktickParser implements InlineParserInterface { public function getMatchDefinition(): InlineParserMatch { return InlineParserMatch::regex('`+'); } public function parse(InlineParserContext $inlineContext): bool { $ticks = $inlineContext->getFullMatch(); $cursor = $inlineContext->getCursor(); $cursor->advanceBy($inlineContext->getFullMatchLength()); $currentPosition = $cursor->getPosition(); $previousState = $cursor->saveState(); while ($matchingTicks = $cursor->match('/`+/m')) { if ($matchingTicks !== $ticks) { continue; } $code = $cursor->getSubstring($currentPosition, $cursor->getPosition() - $currentPosition - \strlen($ticks)); $c = \preg_replace('/\n/m', ' ', $code) ?? ''; if ( $c !== '' && $c[0] === ' ' && \substr($c, -1, 1) === ' ' && \preg_match('/[^ ]/', $c) ) { $c = \substr($c, 1, -1); } $inlineContext->getContainer()->appendChild(new Code($c)); return true; } // If we got here, we didn't match a closing backtick sequence $cursor->restoreState($previousState); $inlineContext->getContainer()->appendChild(new Text($ticks)); return true; } }
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