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<?php
declare(strict_types=1);
namespace Remorhaz\UniLex\Grammar\ContextFree;
class Production
{
private $headerId;
private $index;
private $symbolList;
public function __construct(int $headerId, int $index, int ...$symbolList)
$this->headerId = $headerId;
$this->index = $index;
$this->symbolList = $symbolList;
}
public function __toString()
return "{$this->getHeaderId()}:{$this->getIndex()}";
public function getHeaderId(): int
return $this->headerId;
public function getIndex(): int
return $this->index;
/**
* @return int[]
*/
public function getSymbolList(): array
return $this->symbolList;
public function isEpsilon(): bool
return empty($this->getSymbolList());
remorhaz /
php-unilex
