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<?php declare(strict_types=1);
namespace Stratadox\PuzzleSolver\Puzzle\SlidingCrates;
use Stratadox\PuzzleSolver\InvalidFormat;
use Stratadox\PuzzleSolver\Puzzle;
use Stratadox\PuzzleSolver\PuzzleFactory;
use function explode;
use function substr_count;
use function trim;
final class SlidingCratesPuzzleFactory implements PuzzleFactory
{
/** @var string */
private $separator;
public function __construct(string $separator)
$this->separator = $separator;
}
public static function make(): self
return new self('TARGET:');
public function fromString(string $puzzle): Puzzle
if (substr_count($puzzle, $this->separator) !== 1) {
throw InvalidFormat::couldNotLoad('sliding crates', $puzzle, "Missing `$this->separator` in input.");
[$level, $target] = explode($this->separator, $puzzle);
return SlidingCratesPuzzle::fromString($level, trim($target)[0]);
Stratadox /
PuzzleSolver
