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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| // Copyright (c) 2024, 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 'dart:collection'; | ||
|
|
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| import 'package:analysis_server/lsp_protocol/protocol.dart' as lsp; | ||
| import 'package:analysis_server/protocol/protocol.dart' as legacy; | ||
| import 'package:analysis_server/src/analysis_server.dart'; | ||
| import 'package:analysis_server/src/legacy_analysis_server.dart'; | ||
| import 'package:analysis_server/src/lsp/lsp_analysis_server.dart'; | ||
| import 'package:analyzer/src/util/performance/operation_performance.dart'; | ||
| import 'package:meta/meta.dart'; | ||
|
|
||
| /// Represents a message from DTD (Dart Tooling Daemon). | ||
| final class DtdMessage extends MessageObject { | ||
| final lsp.IncomingMessage message; | ||
| final Completer<Map<String, Object?>> completer; | ||
| final OperationPerformanceImpl performance; | ||
|
|
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| DtdMessage( | ||
| {required this.message, | ||
| required this.completer, | ||
| required this.performance}); | ||
| } | ||
|
|
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| /// Represents a message in the Legacy protocol format. | ||
| final class LegacyMessage extends MessageObject { | ||
| final legacy.Request request; | ||
|
|
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| LegacyMessage({required this.request}); | ||
| } | ||
|
|
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| /// Represents a message in the LSP protocol format. | ||
| final class LspMessage extends MessageObject { | ||
| final lsp.Message message; | ||
|
|
||
| LspMessage({required this.message}); | ||
| } | ||
|
|
||
| /// Represents a message from a client, can be an IDE, DTD etc. | ||
| sealed class MessageObject {} | ||
|
|
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| /// The [MessageScheduler] receives messages from all clients of the | ||
| /// [AnalysisServer]. Clients can include IDE's (LSP and Legacy protocol), DTD, | ||
| /// and the Diagnostic server. The [MessageSchedular] acts as a hub for all | ||
| /// incoming messages and forwards the messages to the appropriate handlers. | ||
| final class MessageScheduler { | ||
| /// The [AnalaysisServer] associated with the schedular. | ||
| late final AnalysisServer server; | ||
|
|
||
| /// A queue of incoming messages from all the clients of the [AnalysisServer]. | ||
| final ListQueue<MessageObject> _incomingMessages = ListQueue<MessageObject>(); | ||
|
|
||
| @visibleForTesting | ||
| ListQueue<MessageObject> get incomingMessages => _incomingMessages; | ||
|
|
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| /// Add a message to the end of the incoming messages queue. | ||
| void add(MessageObject message) { | ||
| _incomingMessages.addLast(message); | ||
| } | ||
|
|
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| /// Notify the [MessageSchedular] to process the messages queue. | ||
| void notify() async { | ||
| processMessages(); | ||
| } | ||
|
|
||
| /// Dispatch the first message in the queue to be executed. | ||
| void processMessages() { | ||
| if (_incomingMessages.isEmpty) { | ||
| return; | ||
| } | ||
| var message = _incomingMessages.removeFirst(); | ||
| switch (message) { | ||
| case LspMessage(): | ||
| var lspMessage = message.message; | ||
| (server as LspAnalysisServer).handleMessage(lspMessage); | ||
| case LegacyMessage(): | ||
| var request = message.request; | ||
| (server as LegacyAnalysisServer).handleRequest(request); | ||
| case DtdMessage(): | ||
| server.dtd!.processMessage( | ||
| message.message, message.performance, message.completer); | ||
| } | ||
| } | ||
|
|
||
| /// Set the [AnalysisServer]. | ||
| void setServer(AnalysisServer analysisServer) { | ||
| server = analysisServer; | ||
| } | ||
| } |
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