File Core/Schema/Result/EmptyResult.php

1:	<?php
2:
3:	declare(strict_types=1);
4:
5:	/**
6:	* This file is part of the Nexus MCP SDK package.
7:	*
8:	* (c) 2026 John Paul E. Balandan, CPA <paulbalandan@gmail.com>
9:	*
10:	* For the full copyright and license information, please view
11:	* the LICENSE file that was distributed with this source code.
12:	*/
13:
14:	namespace Nexus\Mcp\Core\Schema\Result;
15:
16:	use Nexus\Assert\Assert;
17:	use Nexus\Mcp\Core\Schema\MetaObject;
18:	use Nexus\Mcp\Core\Schema\Result;
19:
20:	/**
21:	* A result that carries no fields beyond the optional `_meta`. Used by methods
22:	* like `ping` whose acknowledgement has no payload.
23:	*
24:	* @see https://modelcontextprotocol.io/specification/2025-11-25/schema#emptyresult
25:	*/
26:	final readonly class EmptyResult extends Result implements ClientResult, ServerResult
27:	{
28:	public function __construct(MetaObject $meta = new MetaObject())
29:	{
30:	parent::__construct($meta);
31:	}
32:
33:	#[\Override]
34:	public static function fromArray(array $data): static
35:	{
36:	$meta = new MetaObject();
37:
38:	if (\array_key_exists('_meta', $data)) {
39:	Assert::that($data['_meta'])
40:	->isArray('"result._meta" must be an object, {type} given.')
41:	->isMap('"result._meta" must be a string-keyed object.')
42:	;
43:	$meta = MetaObject::fromArray($data['_meta']);
44:	}
45:
46:	return new self($meta);
47:	}
48:	}
49: