<?php


> declare(strict_types=1);
namespace GeoIp2\Record;
> 



abstract class AbstractRecord implements \JsonSerializable
{

>     /**
    private $record;
>      * @var array<string, mixed>

>      */


    /**
     * @ignore

<      *
<      * @param mixed $record


     */

<     public function __construct($record)



>     public function __construct(?array $record)


    {
        $this->record = isset($record) ? $record : [];
    }

    /**
     * @ignore
     *

<      * @param mixed $attr



>      * @return mixed


     */

<     public function __get($attr)



>     public function __get(string $attr)


    {
        // XXX - kind of ugly but greatly reduces boilerplate code
        $key = $this->attributeToKey($attr);

        if ($this->__isset($attr)) {
            return $this->record[$key];

<         } elseif ($this->validAttribute($attr)) {



>         }
>         if ($this->validAttribute($attr)) {


            if (preg_match('/^is_/', $key)) {
                return false;
            }

            return null;
        }

> 


        throw new \RuntimeException("Unknown attribute: $attr");
    }


<     public function __isset($attr)



>     public function __isset(string $attr): bool


    {

<         return $this->validAttribute($attr) &&
<              isset($this->record[$this->attributeToKey($attr)]);



>         return $this->validAttribute($attr)
>              && isset($this->record[$this->attributeToKey($attr)]);


    }


<     private function attributeToKey($attr)



>     private function attributeToKey(string $attr): string


    {
        return strtolower(preg_replace('/([A-Z])/', '_\1', $attr));
    }


<     private function validAttribute($attr)



>     private function validAttribute(string $attr): bool


    {

>         // @phpstan-ignore-next-line


        return \in_array($attr, $this->validAttributes, true);
    }


<     public function jsonSerialize()



>     public function jsonSerialize(): ?array


    {
        return $this->record;
    }
}