Viewing file:  MemoryLimitedReferenceMap.php (1.59 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\Reference;
final class MemoryLimitedReferenceMap implements ReferenceMapInterface
{
private ReferenceMapInterface $decorated;
private const MINIMUM_SIZE = 100_000;
private int $remaining;
public function __construct(ReferenceMapInterface $decorated, int $maxSize)
{
$this->decorated = $decorated;
$this->remaining = \max(self::MINIMUM_SIZE, $maxSize);
}
public function add(ReferenceInterface $reference): void
{
$this->decorated->add($reference);
}
public function contains(string $label): bool
{
return $this->decorated->contains($label);
}
public function get(string $label): ?ReferenceInterface
{
$reference = $this->decorated->get($label);
if ($reference === null) {
return null;
}
// Check for expansion limit
$this->remaining -= \strlen($reference->getDestination()) + \strlen($reference->getTitle());
if ($this->remaining < 0) {
return null;
}
return $reference;
}
/**
* @return \Traversable<string, ReferenceInterface>
*/
public function getIterator(): \Traversable
{
return $this->decorated->getIterator();
}
public function count(): int
{
return $this->decorated->count();
}
}
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