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\RequestParams;
15:
16: use Nexus\Assert\Assert;
17: use Nexus\Mcp\Core\Schema\Arrayable;
18: use Nexus\Mcp\Core\Schema\RequestMetaObject;
19: use Nexus\Mcp\Core\Schema\RequestParams;
20:
21: /**
22: * Default request params for methods that carry no typed fields beyond `_meta`.
23: *
24: * @extends RequestParams<array{
25: * _meta: template-type<RequestMetaObject, Arrayable, 'T'>,
26: * }>
27: *
28: * @see https://github.com/modelcontextprotocol/modelcontextprotocol/blob/main/schema/draft/schema.ts
29: */
30: final readonly class EmptyRequestParams extends RequestParams
31: {
32: public function __construct(RequestMetaObject $meta)
33: {
34: parent::__construct(meta: $meta);
35: }
36:
37: #[\Override]
38: public static function fromArray(array $data): static
39: {
40: Assert::that($data)->hasOffset('_meta', '"params" is missing the required "_meta" key.');
41: Assert::that($data['_meta'])
42: ->isArray('"params._meta" must be an object, {type} given.')
43: ->isMap('"params._meta" must be a string-keyed object.')
44: ;
45: $meta = RequestMetaObject::fromArray($data['_meta']);
46:
47: return new self(meta: $meta);
48: }
49:
50: #[\Override]
51: public function toArray(): array
52: {
53: return ['_meta' => $this->meta->toArray()];
54: }
55: }
56: