<?php
/**
 * Basic abstract class to represent a simple struct structure.
 *
 * @package UpStream
 */

namespace UpStream;

/**
 * Basic abstract class to represent a simple struct structure.
 *
 * @since       1.13.0
 * @abstract
 */
abstract class Struct {
	/**
	 * Prevent non existent properties from being retrieved.
	 *
	 * @since   1.13.0
	 *
	 * @param   string $property Property being retrieved.
	 *
	 * @throws  \RuntimeException RuntimeException.
	 */
	public function __get( $property ) {
		throw new \RuntimeException( sprintf( 'Trying to get non-existing property "%s".', $property ) );
	}

	/**
	 * Prevent non existent properties from being set.
	 *
	 * @since   1.13.0
	 *
	 * @param   string $property Property being set.
	 * @param   mixed  $value    Value being set.
	 *
	 * @throws  \RuntimeException RuntimeException.
	 */
	public function __set( $property, $value ) {
		throw new \RuntimeException( sprintf( 'Trying to set non-existing property "%s".', $property ) );
	}

	/**
	 * Prevent structs from being passed by reference.
	 *
	 * @since   1.13.0
	 */
	public function __clone() {
		foreach ( $this as $property => $value ) {
			if ( is_object( $value ) ) {
				$this->{$property} = clone $value;
			}
		}
	}
}