| // Copyright (c) 2018, 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/lsp_protocol/protocol_generated.dart'; |
| import 'package:analysis_server/lsp_protocol/protocol_special.dart'; |
| import 'package:analysis_server/src/lsp/constants.dart'; |
| import 'package:analysis_server/src/lsp/handlers/handlers.dart'; |
| import 'package:analysis_server/src/lsp/lsp_analysis_server.dart'; |
| import 'package:analysis_server/src/lsp/mapping.dart'; |
| import 'package:analysis_server/src/lsp/source_edits.dart'; |
| |
| class FormattingHandler |
| extends MessageHandler<DocumentFormattingParams, List<TextEdit>> { |
| FormattingHandler(LspAnalysisServer server) : super(server); |
| @override |
| Method get handlesMessage => Method.textDocument_formatting; |
| |
| @override |
| LspJsonHandler<DocumentFormattingParams> get jsonHandler => |
| DocumentFormattingParams.jsonHandler; |
| |
| ErrorOr<List<TextEdit>> formatFile(String path) { |
| final file = server.resourceProvider.getFile(path); |
| if (!file.exists) { |
| return error(ServerErrorCodes.InvalidFilePath, 'Invalid file path', path); |
| } |
| |
| final unformattedSource = file.readAsStringSync(); |
| return success(generateEditsForFormatting( |
| unformattedSource, server.clientConfiguration.lineLength)); |
| } |
| |
| @override |
| Future<ErrorOr<List<TextEdit>>> handle( |
| DocumentFormattingParams params, CancellationToken token) async { |
| if (!isDartDocument(params.textDocument)) { |
| return success(null); |
| } |
| |
| if (!server.clientConfiguration.enableSdkFormatter) { |
| return error(ServerErrorCodes.FeatureDisabled, |
| 'Formatter was disabled by client settings'); |
| } |
| |
| final path = pathOfDoc(params.textDocument); |
| return path.mapResult((path) => formatFile(path)); |
| } |
| } |