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<?php
declare(strict_types=1);
namespace Remorhaz\UniLex\AST;
use Remorhaz\UniLex\Exception;
use Remorhaz\UniLex\Stack\StackableSymbolInterface;
class Symbol implements StackableSymbolInterface
{
private $header;
private $index;
private $symbol;
public function __construct(Node $header, int $index)
$this->header = $header;
$this->index = $index;
}
public function setSymbol(Node $node): void
$this->symbol = $node;
public function getHeader(): Node
return $this->header;
public function getIndex(): int
return $this->index;
/**
* @return Node
* @throws Exception
*/
public function getSymbol(): Node
if (!isset($this->symbol)) {
$this->symbol = $this
->getHeader()
->getChild($this->getIndex());
return $this->symbol;
remorhaz /
php-unilex
