/home/tuzdhajd/tuzdayscloset.com/wp-content/plugins/brizy/vendor/phplrt/grammar/src/Alternation.php
<?php
/**
* This file is part of phplrt package.
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
declare(strict_types=1);
namespace Phplrt\Grammar;
use Phplrt\Contracts\Ast\NodeInterface;
use Phplrt\Contracts\Lexer\BufferInterface;
use Phplrt\Contracts\Lexer\TokenInterface;
/**
* Class Alternation
*/
class Alternation extends Production
{
/**
* @var array|int[]|string[]
*/
public $sequence;
/**
* Rule constructor.
*
* @param array $sequence
*/
public function __construct(array $sequence)
{
$this->sequence = $sequence;
}
/**
* @return array
*/
public function getConstructorArguments(): array
{
return [$this->sequence];
}
/**
* @param BufferInterface $buffer
* @param \Closure $reduce
* @return TokenInterface|NodeInterface|null
*/
public function reduce(BufferInterface $buffer, \Closure $reduce)
{
$rollback = $buffer->key();
foreach ($this->sequence as $rule) {
if (($result = $reduce($rule)) !== null) {
return $result;
}
$buffer->seek($rollback);
}
return null;
}
}