<?php

namespace alveolata\structures;

require_once(DIR_ALVEOLATA . '/structures/map/functions.php');


/**
 * @template type_key
 * @template type_value
 */
class class_map
{
	
	/**
	 * @var \Closure {function<type_key,type_key,boolean>}
	 */
	private $collate_key;
	
	
	/**
	 * @var struct_subject_map<type_key,type_value>
	 */
	private $subject;
	
	
	/**
	 * @param struct_subject_map<type_key,type_value>
	 */
	public function __construct(
		\Closure $collate_key,
		struct_subject_map $subject
	)
	{
		$this->collate_key = $collate_key;
		$this->subject = $subject;
	}
	
	
	/**
	 * @param array $pairs {list<&struct_subject_pair<§type_key,§type_value>>}
	 */
	public static function make(
		\Closure $collate_key,
		array $pairs = []
	) : class_map
	{
		return (new class_map($collate_key, map_make($pairs)));
	}
	
	
	public function get($key) {return map_get($this->collate_key, $this->subject, $key);}
	public function set($key, $value) : void {map_set($this->collate_key, $this->subject, $key, $value);}
	public function iterate(\Closure $procedure) : void {map_iterate($this->subject, $procedure);}
	
}

 ?>