Vocabulary.php

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<?php

declare(strict_types=1);

namespace ILIAS\MetaData\Vocabularies;

use ILIAS\MetaData\Vocabularies\Conditions\ConditionInterface;

class Vocabulary implements VocabularyInterface
{
    protected string $source;

    protected array $values;
    protected ?ConditionInterface $condition;

    public function __construct(
        string $source,
        ?ConditionInterface $condition = null,
        string ...$values
    ) {
        $this->source = $source;
        $this->values = $values;
        $this->condition = $condition;
    }

    public function source(): string
    {
        return $this->source;
    }

    public function values(): \Generator
    {
        foreach ($this->values as $value) {
            yield $value;
        }
    }

    public function isConditional(): bool
    {
        return isset($this->condition);
    }

    public function condition(): ?ConditionInterface
    {
        return $this->condition;
    }
}