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;
15:
16: use Nexus\Mcp\Core\Schema\MetaObject\GenericResultMetaObject;
17: use Nexus\Mcp\Core\Schema\MetaObject\ResultMetaObject;
18:
19: /**
20: * Common result fields.
21: *
22: * @template-covariant T of array<string, mixed> = array<string, mixed>
23: *
24: * @implements Arrayable<T>
25: *
26: * @see https://modelcontextprotocol.io/specification/2026-07-28/schema#result
27: */
28: abstract readonly class Result implements Arrayable
29: {
30: public function __construct(public ResultMetaObject $meta = new GenericResultMetaObject())
31: {
32: }
33:
34: #[\Override]
35: public function jsonSerialize(): array
36: {
37: return $this->toArray();
38: }
39:
40: /**
41: * Returns a new instance of this result carrying the given `_meta` in place of its own.
42: *
43: * @internal
44: */
45: abstract public function rebuildWithMeta(ResultMetaObject $meta): static;
46:
47: /**
48: * @return non-empty-string
49: */
50: abstract protected function getResultType(): string;
51: }
52: