| // Copyright (c) 2022, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| import 'dart:async'; |
| |
| import 'package:analysis_server/protocol/protocol.dart'; |
| import 'package:analysis_server/protocol/protocol_generated.dart'; |
| import 'package:analysis_server/src/analysis_server.dart'; |
| import 'package:analysis_server/src/computer/computer_hover.dart'; |
| import 'package:analysis_server/src/handler/legacy/legacy_handler.dart'; |
| import 'package:analysis_server/src/utilities/progress.dart'; |
| import 'package:analyzer/dart/analysis/results.dart'; |
| |
| /// The handler for the `analysis.getHover` request. |
| class AnalysisGetHoverHandler extends LegacyHandler { |
| /// Initialize a newly created handler to be able to service requests for the |
| /// [server]. |
| AnalysisGetHoverHandler(AnalysisServer server, Request request, |
| CancellationToken cancellationToken) |
| : super(server, request, cancellationToken); |
| |
| @override |
| Future<void> handle() async { |
| var params = AnalysisGetHoverParams.fromRequest(request); |
| var file = params.file; |
| |
| if (server.sendResponseErrorIfInvalidFilePath(request, file)) { |
| return; |
| } |
| |
| // Prepare the resolved units. |
| var result = await server.getResolvedUnit(file); |
| if (result is! ResolvedUnitResult) { |
| sendResponse(Response.fileNotAnalyzed(request, file)); |
| return; |
| } |
| var unit = result.unit; |
| |
| // Prepare the hovers. |
| var hovers = <HoverInformation>[]; |
| var computer = DartUnitHoverComputer( |
| server.getDartdocDirectiveInfoFor(result), unit, params.offset); |
| var hoverInformation = computer.compute(); |
| if (hoverInformation != null) { |
| hovers.add(hoverInformation); |
| } |
| |
| // Send the response. |
| sendResult(AnalysisGetHoverResult(hovers)); |
| } |
| } |