src/LanguageServer/Protocol/Handler/ServerLifetime/InitializeHandler.cs - main - githubmirror/roslyn

src/LanguageServer/Protocol/Handler/ServerLifetime/InitializeHandler.cs

48 строк2 KB

David Barbet

Implement LSP daemon mode (#84199)

25 июл 2026, 00:26

25 июл 2026, 00:26490f516

// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using System.Text.Json;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.Internal.Log;
using Microsoft.CommonLanguageServerProtocol.Framework;
using Roslyn.LanguageServer.Protocol;

namespace Microsoft.CodeAnalysis.LanguageServer.Handler;

[Method(Methods.InitializeName)]
internal sealed class InitializeHandler() : ILspServiceRequestHandler<InitializeParams, InitializeResult>
{
    public bool MutatesSolutionState => true;
    public bool RequiresLSPSolution => false;

    public async Task<InitializeResult> HandleRequestAsync(InitializeParams request, RequestContext context, CancellationToken cancellationToken)
    {
        var clientCapabilitiesManager = context.GetRequiredLspService<IInitializeManager>();
        var clientCapabilities = request.Capabilities;
        clientCapabilitiesManager.SetInitializeParams(request);

        var lspServices = context.GetRequiredService<ILspServices>();
        var capabilitiesProvider = context.GetRequiredLspService<ICapabilitiesProvider>();
        var serverCapabilities = capabilitiesProvider.GetCapabilities(clientCapabilities, lspServices);

        // Record a telemetry event indicating what capabilities are being provided by the server.
        // Useful for figuring out if a particular session is opted into an LSP feature.
        Logger.Log(FunctionId.LSP_Initialize, KeyValueLogMessage.Create(m =>
        {
            m["serverKind"] = context.ServerKind.ToTelemetryString();
            m["capabilities"] = JsonSerializer.Serialize(serverCapabilities, ProtocolConversions.LspJsonSerializerOptions);
        }));

        return new RoslynInitializeResult
        {
            Capabilities = serverCapabilities,
            ProcessId = RoslynLanguageServer.ServerProcessId,
            ServerInfo = new ServerInfo
            {
                Name = context.ServerKind.ToTelemetryString(),
            },
        };
    }
}