73 lines
2.1 KiB
PHP
73 lines
2.1 KiB
PHP
<?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\Extension\Highlight;
|
|
|
|
use League\CommonMark\Delimiter\DelimiterInterface;
|
|
use League\CommonMark\Delimiter\Processor\CacheableDelimiterProcessorInterface;
|
|
use League\CommonMark\Node\Inline\AbstractStringContainer;
|
|
|
|
class MarkDelimiterProcessor implements CacheableDelimiterProcessorInterface
|
|
{
|
|
public function getOpeningCharacter(): string
|
|
{
|
|
return '=';
|
|
}
|
|
|
|
public function getClosingCharacter(): string
|
|
{
|
|
return '=';
|
|
}
|
|
|
|
public function getMinLength(): int
|
|
{
|
|
return 2;
|
|
}
|
|
|
|
public function getDelimiterUse(DelimiterInterface $opener, DelimiterInterface $closer): int
|
|
{
|
|
if ($opener->getLength() > 2 && $closer->getLength() > 2) {
|
|
return 0;
|
|
}
|
|
|
|
if ($opener->getLength() !== $closer->getLength()) {
|
|
return 0;
|
|
}
|
|
|
|
// $opener and $closer are the same length so we just return one of them
|
|
return $opener->getLength();
|
|
}
|
|
|
|
public function process(AbstractStringContainer $opener, AbstractStringContainer $closer, int $delimiterUse): void
|
|
{
|
|
$mark = new Mark(\str_repeat('=', $delimiterUse));
|
|
|
|
$next = $opener->next();
|
|
while ($next !== null && $next !== $closer) {
|
|
$tmp = $next->next();
|
|
$mark->appendChild($next);
|
|
$next = $tmp;
|
|
}
|
|
|
|
$opener->insertAfter($mark);
|
|
}
|
|
|
|
public function getCacheKey(DelimiterInterface $closer): string
|
|
{
|
|
// getDelimiterUse() returns 0 for every possible opener once the closer exceeds 2
|
|
// characters, so all longer closers behave identically and can share a bucket.
|
|
// Clamping keeps the key space bounded, which is what makes the delimiter stack's
|
|
// lower-bound cache amortize.
|
|
return '=' . \min($closer->getLength(), 3);
|
|
}
|
|
}
|