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<?php declare(strict_types=1);
namespace Stratadox\Parser\Parsers;
use Stratadox\Parser\Helpers\Cast;
use Stratadox\Parser\Parser;
use Stratadox\Parser\Result;
use Stratadox\Parser\Results\Ok;
use function array_merge;
/**
* Sequence / andThen
*
* Puts several parsers one after the other.
* Leaves ignored results out of the returned list of results.
*/
final class Sequence extends Parser
{
/** @param Parser[] $parsers */
public function __construct(private array $parsers) {}
public static function of(Parser|string ...$parsers): Parser
return new self(Cast::asParsers(...$parsers));
}
public function parse(string $input): Result
$sequence = [];
$unparsed = $input;
foreach ($this->parsers as $parser) {
$result = $parser->parse($unparsed);
if (!$result->ok()) {
return $result;
if ($result->use()) {
$sequence[] = $result->data();
$unparsed = $result->unparsed();
return Ok::with($sequence, $unparsed);
public function andThen(Parser|string ...$other): Parser
return new self(array_merge($this->parsers, Cast::asParsers(...$other)));
Stratadox /
Parser
