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\Enum\ResultType;
18:	use Nexus\Mcp\Core\Schema\MetaObject;
19:	use Nexus\Mcp\Core\Schema\MetaObject\GenericResultMetaObject;
20:	use Nexus\Mcp\Core\Schema\MetaObject\ResultMetaObject;
21:	use Nexus\Mcp\Core\Schema\Result;
22:
23:	/**
24:	* Common result fields.
25:	*
26:	* @extends Result<array{
27:	* _meta?: template-type<ResultMetaObject, MetaObject, 'T'>,
28:	* resultType: non-empty-string,
29:	* }>
30:	*
31:	* @see https://modelcontextprotocol.io/specification/2026-07-28/schema#emptyresult
32:	*/
33:	final readonly class EmptyResult extends Result implements ClientResult, ServerResult
34:	{
35:	public function __construct(ResultMetaObject $meta = new GenericResultMetaObject())
36:	{
37:	parent::__construct(meta: $meta);
38:	}
39:
40:	#[\Override]
41:	public static function fromArray(array $data): static
42:	{
43:	$meta = new GenericResultMetaObject();
44:
45:	if (\array_key_exists('_meta', $data)) {
46:	Assert::that($data['_meta'])
47:	->isArray('"result._meta" must be an object, {type} given.')
48:	->isMap('"result._meta" must be a string-keyed object.')
49:	;
50:	$meta = GenericResultMetaObject::fromArray($data['_meta']);
51:	}
52:
53:	return new self(meta: $meta);
54:	}
55:
56:	#[\Override]
57:	public function toArray(): array
58:	{
59:	$data = [];
60:	$meta = $this->meta->toArray();
61:
62:	if ([] !== $meta) {
63:	$data['_meta'] = $meta;
64:	}
65:
66:	$data['resultType'] = self::getResultType();
67:
68:	return $data;
69:	}
70:
71:	#[\Override]
72:	public function rebuildWithMeta(ResultMetaObject $meta): static
73:	{
74:	return new self(meta: $meta);
75:	}
76:
77:	#[\Override]
78:	protected function getResultType(): string
79:	{
80:	return ResultType::Complete->value;
81:	}
82:	}
83:

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