NullReader.php

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<?php

declare(strict_types=1);

namespace ILIAS\MetaData\Vocabularies\Dispatch;

use ILIAS\MetaData\Vocabularies\VocabularyInterface;
use ILIAS\MetaData\Vocabularies\Slots\Identifier as SlotIdentifier;
use ILIAS\MetaData\Vocabularies\NullVocabulary;

class NullReader implements ReaderInterface
{
    public function vocabulary(string $vocab_id): VocabularyInterface
    {
        return new NullVocabulary();
    }

    public function vocabulariesForSlots(
        SlotIdentifier ...$slots
    ): \Generator {
        yield from [];
    }

    public function activeVocabulariesForSlots(
        SlotIdentifier ...$slots
    ): \Generator {
        yield from [];
    }
}