<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Config\Definition\Builder;
use Symfony\Component\Config\Definition\BooleanNode;
use Symfony\Component\Config\Definition\Exception\InvalidDefinitionException;
/**
* This class provides a fluent interface for defining a node.
*
* @author Johannes M. Schmitt <[email protected]>
*/
class BooleanNodeDefinition extends ScalarNodeDefinition
{
/**
* {@inheritdoc}
*/
public function __construct($name, NodeParentInterface $parent = null)
{
parent::__construct($name, $parent);
$this->nullEquivalent = true;
}
/**
* Instantiate a Node.
*
* @return BooleanNode The node
*/
protected function instantiateNode()
{
return new BooleanNode($this->name, $this->parent);
}
/**
* {@inheritdoc}
*
* @throws InvalidDefinitionException
*/
public function cannotBeEmpty()
{
throw new InvalidDefinitionException('->cannotBeEmpty() is not applicable to BooleanNodeDefinition.');
}
}