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Revision Autor Zeilennr. Zeile
148 lars 1 
<?php
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declare(strict_types=1);
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/*
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 * This file is part of the league/commonmark package.
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 *
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 * (c) Colin O'Dell <colinodell@gmail.com>
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 *
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 * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
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 *  - (c) John MacFarlane
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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namespace League\CommonMark\Reference;
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use League\CommonMark\Normalizer\TextNormalizer;
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/**
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 * A collection of references, indexed by label
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 */
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final class ReferenceMap implements ReferenceMapInterface
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{
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    /** @psalm-readonly */
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    private TextNormalizer $normalizer;
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    /**
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     * @var array<string, ReferenceInterface>
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     *
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     * @psalm-readonly-allow-private-mutation
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     */
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    private array $references = [];
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    public function __construct()
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    {
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        $this->normalizer = new TextNormalizer();
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    }
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    public function add(ReferenceInterface $reference): void
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    {
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        // Normalize the key
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        $key = $this->normalizer->normalize($reference->getLabel());
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        // Store the reference
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        $this->references[$key] = $reference;
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    }
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    public function contains(string $label): bool
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    {
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        $label = $this->normalizer->normalize($label);
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        return isset($this->references[$label]);
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    }
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    public function get(string $label): ?ReferenceInterface
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    {
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        $label = $this->normalizer->normalize($label);
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        return $this->references[$label] ?? null;
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    }
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    /**
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     * @return \Traversable<string, ReferenceInterface>
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     */
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    public function getIterator(): \Traversable
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    {
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        foreach ($this->references as $normalizedLabel => $reference) {
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            yield $normalizedLabel => $reference;
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        }
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    }
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    public function count(): int
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    {
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        return \count($this->references);
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    }
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}