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<?php
/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * 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\VariableNode;
/**
 * This class provides a fluent interface for defining a node.
 *
 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
 */
class VariableNodeDefinition extends NodeDefinition
{
    /**
     * Instantiate a Node.
     *
     * @return VariableNode The node
     */
    protected function instantiateNode()
    {
        return new VariableNode($this->name, $this->parent, $this->pathSeparator);
    }
    /**
     * {@inheritdoc}
     */
    protected function createNode()
    {
        $node = $this->instantiateNode();
        if (null !== $this->normalization) {
            $node->setNormalizationClosures($this->normalization->before);
        }
        if (null !== $this->merge) {
            $node->setAllowOverwrite($this->merge->allowOverwrite);
        }
        if (true === $this->default) {
            $node->setDefaultValue($this->defaultValue);
        }
        $node->setAllowEmptyValue($this->allowEmptyValue);
        $node->addEquivalentValue(null, $this->nullEquivalent);