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<?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; 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 <[email protected]> */ interface NodeInterface { /** * Returns the name of the node. * * @return string The name of the node */ public function getName(); /** * Returns the path of the node. * * @return string The node path */ public function getPath(); /** * Returns true when the node is required. * * @return bool If the node is required */ public function isRequired(); /** * Returns true when the node has a default value. * * @return bool If the node has a default value */ public function hasDefaultValue(); /** * Returns the default value of the node. * * @return mixed The default value * * @throws \RuntimeException if the node has no default value */ public function getDefaultValue(); /** * Normalizes a value. * * @param mixed $value The value to normalize * * @return mixed The normalized value * * @throws InvalidTypeException if the value type is invalid */ public function normalize($value); /** * Merges two values together. * * @param mixed $leftSide * @param mixed $rightSide * * @return mixed The merged value * * @throws ForbiddenOverwriteException if the configuration path cannot be overwritten * @throws InvalidTypeException if the value type is invalid */ public function merge($leftSide, $rightSide); /** * Finalizes a value. * * @param mixed $value The value to finalize * * @return mixed The finalized value * * @throws InvalidTypeException if the value type is invalid * @throws InvalidConfigurationException if the value is invalid configuration */ public function finalize($value); }