<?php

/**
 * This file is part of the Nette Framework (https://nette.org)
 * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
 */

declare(strict_types=1);

namespace Nette;

use Nette\Utils\ObjectHelpers;


/**
 * Strict class for better experience.
 * - 'did you mean' hints
 * - access to undeclared members throws exceptions
 * - support for @property annotations
 * - support for calling event handlers stored in $onEvent via onEvent()
 */
trait SmartObject
{
	/**
	 * @return mixed
	 * @throws MemberAccessException
	 */
	public function __call(string $name, array $args)
	{
		$class = static::class;

		if (ObjectHelpers::hasProperty($class, $name) === 'event') { // calling event handlers
			$handlers = $this->$name ?? null;
			if (is_iterable($handlers)) {
				foreach ($handlers as $handler) {
					$handler(...$args);
				}
			} elseif ($handlers !== null) {
				throw new UnexpectedValueException("Property $class::$$name must be iterable or null, " . get_debug_type($handlers) . ' given.');
			}

			return null;
		}

		ObjectHelpers::strictCall($class, $name);
	}


	/**
	 * @throws MemberAccessException
	 */
	public static function __callStatic(string $name, array $args)
	{
		ObjectHelpers::strictStaticCall(static::class, $name);
	}


	/**
	 * @return mixed
	 * @throws MemberAccessException if the property is not defined.
	 */
	public function &__get(string $name)
	{
		$class = static::class;

		if ($prop = ObjectHelpers::getMagicProperties($class)[$name] ?? null) { // property getter
			if (!($prop & 0b0001)) {
				throw new MemberAccessException("Cannot read a write-only property $class::\$$name.");
			}

			$m = ($prop & 0b0010 ? 'get' : 'is') . ucfirst($name);
			if ($prop & 0b10000) {
				$trace = debug_backtrace(0, 1)[0]; // suppose this method is called from __call()
				$loc = isset($trace['file'], $trace['line'])
					? " in $trace[file] on line $trace[line]"
					: '';
				trigger_error("Property $class::\$$name is deprecated, use $class::$m() method$loc.", E_USER_DEPRECATED);
			}

			if ($prop & 0b0100) { // return by reference
				return $this->$m();
			} else {
				$val = $this->$m();
				return $val;
			}
		} else {
			ObjectHelpers::strictGet($class, $name);
		}
	}


	/**
	 * @throws MemberAccessException if the property is not defined or is read-only
	 */
	public function __set(string $name, mixed $value): void
	{
		$class = static::class;

		if (ObjectHelpers::hasProperty($class, $name)) { // unsetted property
			$this->$name = $value;

		} elseif ($prop = ObjectHelpers::getMagicProperties($class)[$name] ?? null) { // property setter
			if (!($prop & 0b1000)) {
				throw new MemberAccessException("Cannot write to a read-only property $class::\$$name.");
			}

			$m = 'set' . ucfirst($name);
			if ($prop & 0b10000) {
				$trace = debug_backtrace(0, 1)[0]; // suppose this method is called from __call()
				$loc = isset($trace['file'], $trace['line'])
					? " in $trace[file] on line $trace[line]"
					: '';
				trigger_error("Property $class::\$$name is deprecated, use $class::$m() method$loc.", E_USER_DEPRECATED);
			}

			$this->$m($value);

		} else {
			ObjectHelpers::strictSet($class, $name);
		}
	}


	/**
	 * @throws MemberAccessException
	 */
	public function __unset(string $name): void
	{
		$class = static::class;
		if (!ObjectHelpers::hasProperty($class, $name)) {
			throw new MemberAccessException("Cannot unset the property $class::\$$name.");
		}
	}


	public function __isset(string $name): bool
	{
		return isset(ObjectHelpers::getMagicProperties(static::class)[$name]);
	}
}

• [D] Iterators
• [D] Utils
• [F] compatibility.php
  Delete
• [F] exceptions.php
  Delete
• [F] HtmlStringable.php
  Delete
• [F] SmartObject.php
  Delete
• [F] StaticClass.php
  Delete
• [F] Translator.php
  Delete

Blog Section

Discover the Latest in Digital Payments and NFC Technology

Dive into our blog to explore the cutting-edge trends in digital payments and NFC technology. Stay updated on the innovations that are revolutionizing transactions, boosting security, and making payments quicker and more convenient. Learn how these advancements are shaping the future of financial interactions and driving the global transition towards a cashless world.

The Rise of Contactless Payments:...

In recent years, contactless payments have surged in popularity, driven...

Visit Blog

March 27, 2024

Enhancing Payment Security: The Role...

As digital transactions proliferate, ensuring robust payment security is more critical than ever. Two foundational...

Visit Blog

March 27, 2024

The Future of Digital Wallets:...

Digital wallets have fundamentally transformed how we manage money, offering a streamlined, secure, and highly...

Visit Blog

March 27, 2024