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<?php
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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 <colinodell@gmail.com>
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* (c) 2015 Martin Hasoň <martin.hason@gmail.com>
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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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declare(strict_types=1);
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namespace League\CommonMark\Extension\Attributes\Parser;
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use League\CommonMark\Extension\Attributes\Node\Attributes;
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use League\CommonMark\Extension\Attributes\Util\AttributesHelper;
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use League\CommonMark\Node\Block\AbstractBlock;
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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 AttributesBlockContinueParser extends AbstractBlockContinueParser
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{
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private Attributes $block;
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private AbstractBlock $container;
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private bool $hasSubsequentLine = false;
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/**
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* @param array<string, mixed> $attributes The attributes identified by the block start parser
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* @param AbstractBlock $container The node we were in when these attributes were discovered
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*/
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public function __construct(array $attributes, AbstractBlock $container)
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{
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$this->block = new Attributes($attributes);
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$this->container = $container;
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}
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public function getBlock(): AbstractBlock
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{
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return $this->block;
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}
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public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
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{
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$this->hasSubsequentLine = true;
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$cursor->advanceToNextNonSpaceOrTab();
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// Does this next line also have attributes?
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$attributes = AttributesHelper::parseAttributes($cursor);
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$cursor->advanceToNextNonSpaceOrTab();
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if ($cursor->isAtEnd() && $attributes !== []) {
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// It does! Merge them into what we parsed previously
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$this->block->setAttributes(AttributesHelper::mergeAttributes(
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$this->block->getAttributes(),
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$attributes
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));
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// Tell the core parser we've consumed everything
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return BlockContinue::at($cursor);
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}
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// Okay, so there are no attributes on the next line
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// If this next line is blank we know we can't target the next node, it must be a previous one
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if ($cursor->isBlank()) {
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$this->block->setTarget(Attributes::TARGET_PREVIOUS);
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}
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return BlockContinue::none();
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}
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public function closeBlock(): void
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{
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// Attributes appearing at the very end of the document won't have any last lines to check
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// so we can make that determination here
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if (! $this->hasSubsequentLine) {
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$this->block->setTarget(Attributes::TARGET_PREVIOUS);
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}
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// We know this block must apply to the "previous" block, but that could be a sibling or parent,
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// so we check the containing block to see which one it might be.
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if ($this->block->getTarget() === Attributes::TARGET_PREVIOUS && $this->block->parent() === $this->container) {
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$this->block->setTarget(Attributes::TARGET_PARENT);
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}
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}
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}
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