<?php

namespace JMS\Serializer;

/**
* Handles traversal along the object graph.
*
* This class handles traversal along the graph, and calls different methods
* on visitors, or custom handlers to process its nodes.
*
* @author Asmir Mustafic <goetas@gmail.com>
*/
interface GraphNavigatorInterface
{
const DIRECTION_SERIALIZATION = 1;
const DIRECTION_DESERIALIZATION = 2;
/**
* Called for each node of the graph that is being traversed.
*
* @param mixed $data the data depends on the direction, and type of visitor
* @param null|array $type array has the format ["name" => string, "params" => array]
* @param Context $context
* @return mixed the return value depends on the direction, and type of visitor
*/
public function accept($data, array $type = null, Context $context);
}