<?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\NodeInterface;

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);

    }

    /**

     * {@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);

        }

        if (false === $this->allowEmptyValue) {

            $node->setAllowEmptyValue($this->allowEmptyValue);

        }

        $node->addEquivalentValue(null, $this->nullEquivalent);

        $node->addEquivalentValue(true, $this->trueEquivalent);

        $node->addEquivalentValue(false, $this->falseEquivalent);

        $node->setRequired($this->required);

        if (null !== $this->validation) {

            $node->setFinalValidationClosures($this->validation->rules);

        }

        return $node;

    }

}