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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;
use Symfony\Component\Config\Definition\Exception\ForbiddenOverwriteException;
use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
use Symfony\Component\Config\Definition\Exception\InvalidTypeException;
/**
* Common Interface among all nodes.
*
* In most cases, it is better to inherit from BaseNode instead of implementing
* this interface yourself.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
interface NodeInterface
{
/**
* Returns the name of the node.
*
* @return string
*/
public function getName();
/**
* Returns the path of the node.
*
* @return string
*/
public function getPath();
/**
* Returns true when the node is required.
*
* @return bool
*/
public function isRequired();
/**
* Returns true when the node has a default value.
*
* @return bool
*/
public function hasDefaultValue();
/**
* Returns the default value of the node.
*
* @return mixed
*
* @throws \RuntimeException if the node has no default value
*/
public function getDefaultValue();
/**
* Normalizes a value.
*
* @param mixed $value The value to normalize
*
* @return mixed
*
* @throws InvalidTypeException if the value type is invalid
*/
public function normalize($value);
/**
* Merges two values together.
*
* @param mixed $leftSide
* @param mixed $rightSide
*
* @return mixed
*
* @throws ForbiddenOverwriteException if the configuration path cannot be overwritten
* @throws InvalidTypeException if the value type is invalid
*/
public function merge($leftSide, $rightSide);
/**
* Finalizes a value.
*
* @param mixed $value The value to finalize
*
* @return mixed
*
* @throws InvalidTypeException if the value type is invalid
* @throws InvalidConfigurationException if the value is invalid configuration
*/
public function finalize($value);
}
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