<?php

namespace alveolata\xml;

// require_once(DIR_ALVEOLATA . '/definitions.php');


/**
 */
interface interface_node
{
	
	/**
	 * shall find all nodes, which fulfill a certain predicate
	 * 
	 * @return array {list<…>}
	 */
	function find(
		\Closure $sub,
		\Closure $predicate,
		?int $max_depth
	) : array
	;
	
	
	/**
	 * shall replace nodes
	 */
	function transform(
		\Closure $sub,
		\Closure $function
	)
	;
	
	
	/**
	 * shall convert the node to an array tree
	 */
	function to_raw(
		\Closure $sub
	)
	;
	
	
	/**
	 * shall convert the node to its string representation
	 */
	function to_string(
		\Closure $sub,
		int $depth
	) : string
	;
	
}

 ?>