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Editing: WrappingClock.php

<?php

declare(strict_types=1);

namespace Beste\Clock;

use Beste\Clock;
use DateTimeImmutable;
use Psr\Clock\ClockInterface;

final class WrappingClock implements Clock
{
    private ClockInterface $wrappedClock;

private function __construct(ClockInterface $wrappedClock)
    {
        $this->wrappedClock = $wrappedClock;
    }

public static function wrapping(object $clock): self
    {
        if ($clock instanceof ClockInterface) {
            return new self($clock);
        }

if (!method_exists($clock, 'now')) {
            throw new \InvalidArgumentException('$clock must implement StellaMaris\Clock\ClockInterface or have a now() method');
        }

if (!($clock->now() instanceof DateTimeImmutable)) {
            throw new \InvalidArgumentException('$clock->now() must return a DateTimeImmutable');
        }

$wrappedClock = new class($clock) implements ClockInterface {
            private object $clock;

public function __construct(object $clock)
            {
                $this->clock = $clock;
            }

public function now(): \DateTimeImmutable
            {
                assert(method_exists($this->clock, 'now'));

$now = $this->clock->now();

assert($now instanceof \DateTimeImmutable);

return $now;
            }
        };

return new self($wrappedClock);
    }

public function now(): DateTimeImmutable
    {
        return $this->wrappedClock->now();
    }
}

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