File Core/Schema/Error/UnknownProtocolError.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\Error;
15:
16:	use Nexus\Assert\Assert;
17:	use Nexus\Mcp\Core\Schema\Enum\ProtocolErrorCode;
18:	use Nexus\Mcp\Core\Schema\Error;
19:
20:	/**
21:	* Error carrying a raw integer code that does not map to a known `ProtocolErrorCode` case.
22:	*
23:	* @extends Error<array{code: int, message: non-empty-string, data?: mixed}>
24:	*
25:	* @see https://www.jsonrpc.org/specification#error_object
26:	*/
27:	final readonly class UnknownProtocolError extends Error
28:	{
29:	/**
30:	* @param non-empty-string $message
31:	*/
32:	public function __construct(int $code, string $message, mixed $data = null)
33:	{
34:	if (ProtocolErrorCode::tryFrom($code) !== null) {
35:	throw new \InvalidArgumentException(\sprintf('code %d maps to a known protocol error code.', $code));
36:	}
37:
38:	parent::__construct(code: $code, message: $message, data: $data);
39:	}
40:
41:	#[\Override]
42:	public static function fromArray(array $data): static
43:	{
44:	Assert::that($data)->hasOffset('code', '"error" is missing the required "code" key.');
45:	Assert::that($data['code'])->isInt('"error.code" must be an integer, {type} given.');
46:
47:	Assert::that($data)->hasOffset('message', '"error" is missing the required "message" key.');
48:	Assert::that($data['message'])->isNonEmptyString('"error.message" must be a non-empty string, {type} given.');
49:
50:	return new self(code: $data['code'], message: $data['message'], data: $data['data'] ?? null);
51:	}
52:
53:	#[\Override]
54:	public function toArray(): array
55:	{
56:	$result = [
57:	'code' => $this->code,
58:	'message' => $this->message,
59:	];
60:
61:	$data = $this->data ?? [];
62:
63:	if ([] !== $data) {
64:	$result['data'] = $data;
65:	}
66:
67:	return $result;
68:	}
69:	}
70:

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