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<?php
/*
* This file is part of the league/commonmark package.
*
* (c) Colin O'Dell <colinodell@gmail.com>
*
* Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
* - (c) John MacFarlane
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace League\CommonMark\Reference;
/**
* A collection of references, indexed by label
*/
final class ReferenceMap implements ReferenceMapInterface
{
/**
* @var ReferenceInterface[]
*/
protected $references = [];
public function addReference(ReferenceInterface $reference): void
{
$key = Reference::normalizeReference($reference->getLabel());
$this->references[$key] = $reference;
}
public function contains(string $label): bool
{
$label = Reference::normalizeReference($label);
return isset($this->references[$label]);
}
public function getReference(string $label): ?ReferenceInterface
{
$label = Reference::normalizeReference($label);
if (!isset($this->references[$label])) {
return null;
}
return $this->references[$label];
}
public function listReferences(): iterable
{
return \array_values($this->references);
}
}
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