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<?php
declare(strict_types=1);
/*
* This file is part of the league/commonmark package.
*
* (c) Colin O'Dell <[email protected]>
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace League\CommonMark\Extension\FrontMatter;
use League\CommonMark\Environment\ConfigurableEnvironmentInterface;
use League\CommonMark\Event\DocumentPreParsedEvent;
use League\CommonMark\Event\DocumentRenderedEvent;
use League\CommonMark\Extension\ExtensionInterface;
use League\CommonMark\Extension\FrontMatter\Data\FrontMatterDataParserInterface;
use League\CommonMark\Extension\FrontMatter\Data\SymfonyYamlFrontMatterParser;
use League\CommonMark\Extension\FrontMatter\Listener\FrontMatterPostRenderListener;
use League\CommonMark\Extension\FrontMatter\Listener\FrontMatterPreParser;
final class FrontMatterExtension implements ExtensionInterface
{
/**
* @var FrontMatterParserInterface
* @psalm-readonly
private $frontMatterParser;
public function __construct(?FrontMatterDataParserInterface $dataParser = null)
$this->frontMatterParser = new FrontMatterParser($dataParser ?? new SymfonyYamlFrontMatterParser());
}
public function getFrontMatterParser(): FrontMatterParserInterface
return $this->frontMatterParser;
public function register(ConfigurableEnvironmentInterface $environment): void
$environment->addEventListener(DocumentPreParsedEvent::class, new FrontMatterPreParser($this->frontMatterParser));
$environment->addEventListener(DocumentRenderedEvent::class, new FrontMatterPostRenderListener(), -500);
thephpleague /
commonmark
