<?php
declare(strict_types=1);
namespace League\CommonMark\Extension\Table;
use League\CommonMark\Parser\Block\BlockStart;
use League\CommonMark\Parser\Block\BlockStartParserInterface;
use League\CommonMark\Parser\Block\ParagraphParser;
use League\CommonMark\Parser\Cursor;
use League\CommonMark\Parser\MarkdownParserStateInterface;
final class TableStartParser implements BlockStartParserInterface
{
public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart
{
$paragraph = $parserState->getParagraphContent();
if ($paragraph === null || \strpos($paragraph, '|') === false) {
return BlockStart::none();
}
$columns = self::parseSeparator($cursor);
if (\count($columns) === 0) {
return BlockStart::none();
}
$lines = \explode("\n", $paragraph);
$lastLine = \array_pop($lines);
$headerCells = TableParser::split($lastLine);
if (\count($headerCells) > \count($columns)) {
return BlockStart::none();
}