File Core/Schema/Error.php | Nexus MCP SDK API

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\Assert\Assert;
17:	use Nexus\Mcp\Core\Schema\Enum\ProtocolErrorCode;
18:
19:	/**
20:	* @template-covariant T of array<string, mixed> = array<string, mixed>
21:	*
22:	* @implements Arrayable<T>
23:	*
24:	* @see https://modelcontextprotocol.io/specification/draft/schema#error
25:	*/
26:	abstract readonly class Error implements Arrayable
27:	{
28:	public int $code;
29:
30:	/**
31:	* @var non-empty-string
32:	*/
33:	public string $message;
34:
35:	public function __construct(
36:	int\|ProtocolErrorCode $code,
37:	string $message,
38:	public mixed $data = null,
39:	) {
40:	Assert::that($message)->isNonEmptyString('error "message" must be a non-empty string.');
41:
42:	$this->code = $code instanceof ProtocolErrorCode ? $code->value : $code;
43:	$this->message = $message;
44:	}
45:
46:	#[\Override]
47:	public function jsonSerialize(): array
48:	{
49:	return $this->toArray();
50:	}
51:	}
52: