78 lines
1.8 KiB
PHP
78 lines
1.8 KiB
PHP
<?php
|
|
|
|
declare(strict_types=1);
|
|
|
|
/*
|
|
* 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;
|
|
|
|
use League\CommonMark\Normalizer\TextNormalizer;
|
|
|
|
/**
|
|
* A collection of references, indexed by label
|
|
*/
|
|
final class ReferenceMap implements ReferenceMapInterface
|
|
{
|
|
/** @psalm-readonly */
|
|
private TextNormalizer $normalizer;
|
|
|
|
/**
|
|
* @var array<string, ReferenceInterface>
|
|
*
|
|
* @psalm-readonly-allow-private-mutation
|
|
*/
|
|
private array $references = [];
|
|
|
|
public function __construct()
|
|
{
|
|
$this->normalizer = new TextNormalizer();
|
|
}
|
|
|
|
public function add(ReferenceInterface $reference): void
|
|
{
|
|
// Normalize the key
|
|
$key = $this->normalizer->normalize($reference->getLabel());
|
|
// Store the reference
|
|
$this->references[$key] = $reference;
|
|
}
|
|
|
|
public function contains(string $label): bool
|
|
{
|
|
$label = $this->normalizer->normalize($label);
|
|
|
|
return isset($this->references[$label]);
|
|
}
|
|
|
|
public function get(string $label): ?ReferenceInterface
|
|
{
|
|
$label = $this->normalizer->normalize($label);
|
|
|
|
return $this->references[$label] ?? null;
|
|
}
|
|
|
|
/**
|
|
* @return \Traversable<string, ReferenceInterface>
|
|
*/
|
|
public function getIterator(): \Traversable
|
|
{
|
|
foreach ($this->references as $normalizedLabel => $reference) {
|
|
yield $normalizedLabel => $reference;
|
|
}
|
|
}
|
|
|
|
public function count(): int
|
|
{
|
|
return \count($this->references);
|
|
}
|
|
}
|