Subversion-Projekte lars-tiefland.laravel_shop

<?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, " . gettype($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]);
        }
}