Viewing file:  DocumentBlockParser.php (2.3 KB) -rw-r--r--
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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>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace League\CommonMark\Parser\Block;
use League\CommonMark\Node\Block\AbstractBlock;
use League\CommonMark\Node\Block\Document;
use League\CommonMark\Node\Block\Paragraph;
use League\CommonMark\Parser\Cursor;
use League\CommonMark\Reference\ReferenceMapInterface;
/**
* Parser implementation which ensures everything is added to the root-level Document
*/
final class DocumentBlockParser extends AbstractBlockContinueParser
{
/** @psalm-readonly */
private Document $document;
public function __construct(ReferenceMapInterface $referenceMap)
{
$this->document = new Document($referenceMap);
}
public function getBlock(): Document
{
return $this->document;
}
public function isContainer(): bool
{
return true;
}
public function canContain(AbstractBlock $childBlock): bool
{
return true;
}
public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
{
return BlockContinue::at($cursor);
}
public function closeBlock(): void
{
$this->removeLinkReferenceDefinitions();
}
private function removeLinkReferenceDefinitions(): void
{
$emptyNodes = [];
$walker = $this->document->walker();
while ($event = $walker->next()) {
$node = $event->getNode();
// TODO for v3: It would be great if we could find an alternate way to identify such paragraphs.
// Unfortunately, we can't simply check for empty paragraphs here because inlines haven't been processed yet,
// meaning all paragraphs will appear blank here, and we don't have a way to check the status of the reference parser
// which is attached to the (already-closed) paragraph parser.
if ($event->isEntering() && $node instanceof Paragraph && $node->onlyContainsLinkReferenceDefinitions) {
$emptyNodes[] = $node;
}
}
foreach ($emptyNodes as $node) {
$node->detach();
}
}
}
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