<?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:----ODUyNTA1NDQyMTE5ODA5MiAzNTAwOTc0NTk4MzA1MDIzIDM2MjcxMzYzNTg5NDM2MTg=