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<?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 <[email protected]> |
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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\Extension\CommonMark\Node\Block\ListBlock; |
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use League\CommonMark\Extension\CommonMark\Node\Block\ListData; |
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use League\CommonMark\Extension\CommonMark\Node\Block\ListItem; |
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use League\CommonMark\Node\Block\AbstractBlock; |
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use League\CommonMark\Node\Block\Paragraph; |
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use League\CommonMark\Parser\Block\AbstractBlockContinueParser; |
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use League\CommonMark\Parser\Block\BlockContinue; |
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use League\CommonMark\Parser\Block\BlockContinueParserInterface; |
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use League\CommonMark\Parser\Cursor; |
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final class ListItemParser extends AbstractBlockContinueParser |
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{ |
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/** @psalm-readonly */ |
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private ListItem $block; |
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private bool $hadBlankLine = false; |
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public function __construct(ListData $listData) |
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{ |
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$this->block = new ListItem($listData); |
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} |
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public function getBlock(): ListItem |
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{ |
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return $this->block; |
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} |
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public function isContainer(): bool |
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{ |
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return true; |
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} |
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public function canContain(AbstractBlock $childBlock): bool |
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{ |
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if ($this->hadBlankLine) { |
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// We saw a blank line in this list item, that means the list block is loose. |
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// |
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// spec: if any of its constituent list items directly contain two block-level elements with a blank line |
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// between them |
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$parent = $this->block->parent(); |
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if ($parent instanceof ListBlock) { |
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$parent->setTight(false); |
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} |
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} |
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return true; |
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} |
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public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue |
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{ |
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if ($cursor->isBlank()) { |
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if ($this->block->firstChild() === null) { |
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// Blank line after empty list item |
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return BlockContinue::none(); |
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} |
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$activeBlock = $activeBlockParser->getBlock(); |
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// If the active block is a code block, blank lines in it should not affect if the list is tight. |
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$this->hadBlankLine = $activeBlock instanceof Paragraph || $activeBlock instanceof ListItem; |
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$cursor->advanceToNextNonSpaceOrTab(); |
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return BlockContinue::at($cursor); |
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} |
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$contentIndent = $this->block->getListData()->markerOffset + $this->getBlock()->getListData()->padding; |
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if ($cursor->getIndent() >= $contentIndent) { |
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$cursor->advanceBy($contentIndent, true); |
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return BlockContinue::at($cursor); |
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} |
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// Note: We'll hit this case for lazy continuation lines, they will get added later. |
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return BlockContinue::none(); |
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} |
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} |
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thephpleague /
commonmark
