<?php declare(strict_types=1);

namespace PHPUnit\Framework\MockObject\Stub;

use function sprintf;
use PHPUnit\Framework\MockObject\Invocation;
use SebastianBergmann\Exporter\Exporter;

/**
 * @internal This class is not covered by the backward compatibility promise for PHPUnit
 */
final class ReturnReference implements Stub
{
    private mixed $reference;

    public function __construct(mixed &$reference)
    {
        $this->reference = &$reference;
    }

    public function invoke(Invocation $invocation): mixed
    {
        return $this->reference;
    }

    public function toString(): string
    {
        $exporter = new Exporter;

        return sprintf(
            'return user-specified reference %s',
            $exporter->export($this->reference)
        );
    }
}
