Konstantin Shcheglov
e97f1bdbf0
This should allow doing partial migration, specifically protocol files, which are imported by other libraries, but are a small library cycle that does not import much outside of it. Change-Id: I904c05d6d5b444ee9a9dbd1f7ada12aabdcc5165 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/193583 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
67 lines
2.4 KiB
Dart
67 lines
2.4 KiB
Dart
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// @dart = 2.9
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import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
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import 'package:analysis_server/lsp_protocol/protocol_special.dart';
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import 'package:analysis_server/src/computer/computer_folding.dart';
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import 'package:analysis_server/src/lsp/handlers/handlers.dart';
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import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
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import 'package:analysis_server/src/lsp/mapping.dart';
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import 'package:analysis_server/src/protocol_server.dart';
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import 'package:analyzer/dart/analysis/results.dart';
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import 'package:analyzer/source/line_info.dart';
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class FoldingHandler
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extends MessageHandler<FoldingRangeParams, List<FoldingRange>> {
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FoldingHandler(LspAnalysisServer server) : super(server);
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@override
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Method get handlesMessage => Method.textDocument_foldingRange;
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@override
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LspJsonHandler<FoldingRangeParams> get jsonHandler =>
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FoldingRangeParams.jsonHandler;
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@override
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Future<ErrorOr<List<FoldingRange>>> handle(
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FoldingRangeParams params, CancellationToken token) async {
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final path = pathOfDoc(params.textDocument);
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return path.mapResult((path) async {
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final partialResults = <List<FoldingRegion>>[];
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LineInfo lineInfo;
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final unit = server.getParsedUnit(path);
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if (unit?.state == ResultState.VALID) {
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lineInfo = unit.lineInfo;
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final regions = DartUnitFoldingComputer(lineInfo, unit.unit).compute();
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partialResults.insert(0, regions);
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}
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// Still try to obtain line info for invalid or non-Dart files, as plugins
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// could contribute to those.
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lineInfo ??= server.getLineInfo(path);
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if (lineInfo == null) {
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// Line information would be required to translate folding results to
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// LSP.
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return success(const []);
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}
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final notificationManager = server.notificationManager;
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final pluginResults = notificationManager.folding.getResults(path);
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partialResults.addAll(pluginResults);
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final regions =
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notificationManager.merger.mergeFoldingRegions(partialResults);
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return success(
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regions.map((region) => toFoldingRange(lineInfo, region)).toList(),
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);
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});
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}
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}
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