DynamicValueMap.php

<?php
 
/*
 * This file is part of BedrockProtocol.
 * Copyright (C) 2014-2022 PocketMine Team <https://github.com/pmmp/BedrockProtocol>
 *
 * BedrockProtocol is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 */
 
declare(strict_types=1);
 
namespace pocketmine\network\mcpe\protocol\types\cereal;
 
use pmmp\encoding\ByteBufferReader;
use pmmp\encoding\ByteBufferWriter;
use pmmp\encoding\LE;
use pmmp\encoding\VarInt;
use pocketmine\network\mcpe\protocol\serializer\CommonTypes;
use pocketmine\network\mcpe\protocol\types\GetTypeIdFromConstTrait;
use function count;
 
final class DynamicValueMap extends DynamicValue{
    use GetTypeIdFromConstTrait;
 
    public const ID = DynamicValueType::MAP;
 
    public function __construct(
        private array $value
    ){}
 
    public function getValue() : array{ return $this->value; }
 
    protected static function readValue(ByteBufferReader $in) : self{
        $value = [];
 
        for($i = 0, $count = VarInt::readUnsignedInt($in); $i < $count; $i++){
            $key = CommonTypes::getString($in);
            //YIKES! unchecked recursion ?!?!?! thank god this never gets sent by the client...
            $type = LE::readUnsignedInt($in);
            $value[$key] = DynamicValue::read($in, $type);
        }
 
        return new self($value);
    }
 
    protected function writeValue(ByteBufferWriter $out) : void{
        VarInt::writeUnsignedInt($out, count($this->value));
        foreach($this->value as $key => $value){
            CommonTypes::putString($out, (string) $key); //make sure we don't get any unexpected strings casted to int
            LE::writeUnsignedInt($out, $value?->getTypeId() ?? DynamicValueType::NULL);
            $value?->write($out);
        }
    }
}