| 1: | <?php |
| 2: | |
| 3: | declare(strict_types=1); |
| 4: | |
| 5: | |
| 6: | |
| 7: | |
| 8: | |
| 9: | |
| 10: | |
| 11: | |
| 12: | |
| 13: | |
| 14: | namespace Nexus\Mcp\Server\Completion; |
| 15: | |
| 16: | use Nexus\Mcp\Core\Schema\Result\CompleteResult; |
| 17: | use Nexus\Mcp\Server\Discovery\InputSchemaGenerator; |
| 18: | use Nexus\Mcp\Server\Exception\UnsupportedReturnValueException; |
| 19: | use Nexus\Mcp\Server\ServerContext; |
| 20: | |
| 21: | |
| 22: | |
| 23: | |
| 24: | final readonly class ReflectedCompletionProvider implements CompletionProviderInterface |
| 25: | { |
| 26: | public function __construct( |
| 27: | private object $handler, |
| 28: | private \ReflectionMethod $method, |
| 29: | ) { |
| 30: | } |
| 31: | |
| 32: | #[\Override] |
| 33: | public function complete(string $argumentValue, ?array $contextArguments, ServerContext $context): CompleteResult |
| 34: | { |
| 35: | $arguments = []; |
| 36: | |
| 37: | foreach ($this->method->getParameters() as $parameter) { |
| 38: | $type = $parameter->getType(); |
| 39: | |
| 40: | if (InputSchemaGenerator::isInjectedContext($parameter)) { |
| 41: | $arguments[] = $context; |
| 42: | } elseif ($type instanceof \ReflectionNamedType && $type->getName() === 'array') { |
| 43: | $arguments[] = $contextArguments ?? ($type->allowsNull() ? null : []); |
| 44: | } else { |
| 45: | $arguments[] = $argumentValue; |
| 46: | } |
| 47: | } |
| 48: | |
| 49: | return $this->adapt($this->method->invokeArgs($this->handler, $arguments)); |
| 50: | } |
| 51: | |
| 52: | private function adapt(mixed $result): CompleteResult |
| 53: | { |
| 54: | if ($result instanceof CompleteResult) { |
| 55: | return $result; |
| 56: | } |
| 57: | |
| 58: | if (\is_array($result) && array_is_list($result)) { |
| 59: | $values = []; |
| 60: | |
| 61: | foreach ($result as $entry) { |
| 62: | if (! \is_string($entry)) { |
| 63: | $values = null; |
| 64: | |
| 65: | break; |
| 66: | } |
| 67: | |
| 68: | $values[] = $entry; |
| 69: | } |
| 70: | |
| 71: | if (null !== $values) { |
| 72: | return new CompleteResult(completion: ['values' => $values]); |
| 73: | } |
| 74: | } |
| 75: | |
| 76: | throw new UnsupportedReturnValueException( |
| 77: | $this->method->getDeclaringClass()->getName(), |
| 78: | $this->method->getName(), |
| 79: | \sprintf('a %s or a list of strings', CompleteResult::class), |
| 80: | $result, |
| 81: | ); |
| 82: | } |
| 83: | } |
| 84: | |