<?php

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);
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MjExNTYzODg1MDg4NDMzOCA5MDE3NTAwNjE3MDA1OTEwIDY2NjAxNTU1Nzc3MzMwOTc=