<?php

/*
 * PocketMine Standard PHP Library
 * Copyright (C) 2014-2017 PocketMine Team <https://github.com/PocketMine/PocketMine-SPL>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
*/

interface ClassLoader{

	/**
	 * @param ClassLoader $parent
	 */
	public function __construct(ClassLoader $parent = null);

	/**
	 * Adds a path to the lookup list
	 *
	 * @param string $path
	 * @param bool   $prepend
	 */
	public function addPath($path, $prepend = false);

	/**
	 * Removes a path from the lookup list
	 *
	 * @param $path
	 */
	public function removePath($path);

	/**
	 * Returns an array of the classes loaded
	 *
	 * @return string[]
	 */
	public function getClasses();

	/**
	 * Returns the parent ClassLoader, if any
	 *
	 * @return ClassLoader
	 */
	public function getParent();

	/**
	 * Attaches the ClassLoader to the PHP runtime
	 *
	 * @param bool $prepend
	 *
	 * @return bool
	 */
	public function register($prepend = false);

	/**
	 * Called when there is a class to load
	 *
	 * @param string $name
	 *
	 * @return bool
	 */
	public function loadClass($name);

	/**
	 * Returns the path for the class, if any
	 *
	 * @param string $name
	 *
	 * @return string|null
	 */
	public function findClass($name);
}