VScode Avalonia XAML autocompletion doesn't work #110

RegreTTO · 2024-02-13T17:07:46Z

Describe the bug

After triggering autocomplete it doesn't work and throws errors in "Avalonia Client" log section in VScode

To Reproduce

Steps to reproduce the behavior:

Create new project with dotnet new install Avalonia.Templates
Go to .axaml
Click on "<" for example
See error

Expected behavior

I get autocompletion

Environment

OS: Arch Linux
Avalonia-Version: 11.0.6
Avalonia VScode extension version: 0.0.31

Additional context

Error itself

2024-02-13 20:07:23.837 [info] [Trace - 20:07:23] Sending notification 'textDocument/didChange'.
2024-02-13 20:07:23.843 [info] [Trace - 20:07:23] Sending request 'textDocument/completion - (2)'.
2024-02-13 20:07:23.853 [info] [Trace - 20:07:23] Received notification 'window/logMessage'.
2024-02-13 20:07:23.853 [info] [Error - 20:07:23] OmniSharp.Extensions.JsonRpc.DefaultRequestInvoker: Failed to handle request textDocument/completion 2 - System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at AvaloniaLanguageServer.Services.Buffer.GetTextTillLine(Position position) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Services/Buffer.cs:line 8
   at AvaloniaLanguageServer.Services.BufferService.GetTextTillPosition(DocumentUri key, Position position) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Services/BufferService.cs:line 22
   at AvaloniaLanguageServer.Handlers.CompletionHandler.Handle(CompletionParams request, CancellationToken cancellationToken) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Handlers/CompletionHandler.cs:line 29
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.SemanticTokensDeltaPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.ResolveCommandPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPreProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPostProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.g__InnerRoute|7_0(IServiceScopeFactory serviceScopeFactory, Request request, TDescriptor descriptor, Object params, CancellationToken token, ILogger logger)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.RouteRequest(IRequestDescriptor`1 descriptors, Request request, CancellationToken token)
   at OmniSharp.Extensions.JsonRpc.DefaultRequestInvoker.<>c__DisplayClass10_0.<b__5>d.MoveNext() | Method='textDocument/completion' RequestId='2'
2024-02-13 20:07:23.854 [info] [Trace - 20:07:23] Received response 'textDocument/completion - (2)' in 11ms. Request failed: Internal Error - System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at AvaloniaLanguageServer.Services.Buffer.GetTextTillLine(Position position) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Services/Buffer.cs:line 8
   at AvaloniaLanguageServer.Services.BufferService.GetTextTillPosition(DocumentUri key, Position position) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Services/BufferService.cs:line 22
   at AvaloniaLanguageServer.Handlers.CompletionHandler.Handle(CompletionParams request, CancellationToken cancellationToken) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Handlers/CompletionHandler.cs:line 29
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.SemanticTokensDeltaPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.ResolveCommandPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPreProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPostProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.g__InnerRoute|7_0(IServiceScopeFactory serviceScopeFactory, Request request, TDescriptor descriptor, Object params, CancellationToken token, ILogger logger)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.RouteRequest(IRequestDescriptor`1 descriptors, Request request, CancellationToken token)
   at OmniSharp.Extensions.JsonRpc.DefaultRequestInvoker.<>c__DisplayClass10_0.<b__5>d.MoveNext() (-32603).
2024-02-13 20:07:23.855 [info] [Error - 20:07:23] Request textDocument/completion failed.
2024-02-13 20:07:23.855 [info]   Message: Internal Error - System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at AvaloniaLanguageServer.Services.Buffer.GetTextTillLine(Position position) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Services/Buffer.cs:line 8
   at AvaloniaLanguageServer.Services.BufferService.GetTextTillPosition(DocumentUri key, Position position) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Services/BufferService.cs:line 22
   at AvaloniaLanguageServer.Handlers.CompletionHandler.Handle(CompletionParams request, CancellationToken cancellationToken) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Handlers/CompletionHandler.cs:line 29
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.SemanticTokensDeltaPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.ResolveCommandPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPreProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPostProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.g__InnerRoute|7_0(IServiceScopeFactory serviceScopeFactory, Request request, TDescriptor descriptor, Object params, CancellationToken token, ILogger logger)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.RouteRequest(IRequestDescriptor`1 descriptors, Request request, CancellationToken token)
   at OmniSharp.Extensions.JsonRpc.DefaultRequestInvoker.<>c__DisplayClass10_0.<b__5>d.MoveNext()
  Code: -32603 
2024-02-13 20:07:24.854 [info] [Trace - 20:07:24] Sending notification 'textDocument/didSave'.
2024-02-13 20:07:24.856 [info] [Trace - 20:07:24] Received notification 'window/logMessage'.
2024-02-13 20:07:24.857 [info] [Info  - 20:07:24] AvaloniaLanguageServer.Handlers.TextDocumentSyncHandler: DidSaveTextDocumentParams OmniSharp.Extensions.LanguageServer.Protocol.Models.DidSaveTextDocumentParams | Request='OmniSharp.Extensions.LanguageServer.Protocol.Models.DidSaveTextDocumentParams'
2024-02-13 20:07:25.169 [info] [Trace - 20:07:25] Sending notification 'workspace/didChangeWatchedFiles'.

The text was updated successfully, but these errors were encountered:

timunie · 2024-02-13T18:05:34Z

@RegreTTO please make sure you have all the latest versions of the extension and Avalonia. If the issue persistets file a minimum repo.

Note: that the extension has its own repo where issues should be reported.

prashantvc · 2024-02-14T06:18:54Z

@RegreTTO This is fixed in the version v0.0.30, could you confirm that you have latest version of the extension?

RegreTTO · 2024-02-14T14:44:48Z

@prashantvc Yes. I've checked the version right now and it is exactly v0.0.30

RegreTTO · 2024-02-14T15:19:32Z

@timunie It was the first time I installed all avalonia-related plugins, so they are exactly last version

timunie · 2024-02-14T15:26:42Z

11.0.6 is outdated. 11.0.9 is recent.

RegreTTO · 2024-02-14T15:36:40Z

I installed it as said in the docs with dotnet new install Avalonia.Templates. I took version from my .csproj file.

timunie · 2024-02-15T07:50:29Z

The templates were maybe not updated yet. They are not always in sync with latest minor version, so please try to update your nugets 🙏

calee88 · 2024-02-17T01:37:14Z

@timunie Hello!
How can I update my nugets? I tried

dotnet new install Avalonia.Templates::11.0.9

I got

Warning: Avalonia.Templates::11.0.9 is not found in NuGet feeds https://api.nuget.org/v3/index.json.
Avalonia.Templates::11.0.9 could not be installed, the package does not exist.

I also searched for the Avalonia.Templates and found that the latest version is 11.0.6.
https://www.nuget.org/packages?q=Avalonia.Templates

calee88 · 2024-02-17T01:51:23Z

I tried to update the package versions by manually changing the versions in .csproj file, and rebuild the project. However, the problem persists.

calee88 · 2024-02-17T01:54:32Z

I changed the extension to v0.0.29, and the problem has been resolved.

RegreTTO · 2024-02-17T16:49:10Z

Thanks, I'll try downgrading later

RegreTTO · 2024-02-18T08:13:04Z

@calee88 Indeed, downgrading fixes this problem

RegreTTO · 2024-02-18T10:32:52Z

Or not. After rebooting it started to infinitely ask me to build project, but nothing changes. It asks, I build, it asks again and so on

timunie · 2024-02-18T10:38:16Z

@RegreTTO please upload a minimum sample for us to reproduce.

RegreTTO · 2024-02-18T10:52:42Z

@timunie There is no need me to upload such. It is just dotnet new avalonia.mvvm, nothing more

microhobby · 2024-02-27T00:14:53Z

I'm having the same issue 😓

microhobby · 2024-02-27T00:17:18Z

Interesting, if I downgrade the extension to the v0.0.29 it works 🤔

Edit: yeah, now I see that this was already proposed, then confirmed.

LeadManPL · 2024-03-05T15:38:33Z

I can confirm. Just follow Avalonia docs to reproduce this error. Avalonia.Templates::11.0.6 is the newest version available.

Might be related to this OmniSharp issue #2525 or #2550

2024-03-05 15:52:27.694 [info] [Trace - 15:52:27] Sending request 'textDocument/completion - (1)'.
2024-03-05 15:52:27.729 [info] [Trace - 15:52:27] Received notification 'window/logMessage'.
2024-03-05 15:52:27.729 [info] [Error - 15:52:27] OmniSharp.Extensions.JsonRpc.DefaultRequestInvoker: Failed to handle request textDocument/completion 1 - System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at AvaloniaLanguageServer.Services.Buffer.GetTextTillLine(Position position) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Services/Buffer.cs:line 8
   at AvaloniaLanguageServer.Services.BufferService.GetTextTillPosition(DocumentUri key, Position position) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Services/BufferService.cs:line 22
   at AvaloniaLanguageServer.Handlers.CompletionHandler.Handle(CompletionParams request, CancellationToken cancellationToken) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Handlers/CompletionHandler.cs:line 29
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.SemanticTokensDeltaPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.ResolveCommandPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPreProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPostProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.<RouteRequest>g__InnerRoute|7_0(IServiceScopeFactory serviceScopeFactory, Request request, TDescriptor descriptor, Object params, CancellationToken token, ILogger logger)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.RouteRequest(IRequestDescriptor`1 descriptors, Request request, CancellationToken token)
   at OmniSharp.Extensions.JsonRpc.DefaultRequestInvoker.<>c__DisplayClass10_0.<<RouteRequest>b__5>d.MoveNext() | Method='textDocument/completion' RequestId='1'
2024-03-05 15:52:27.736 [info] [Trace - 15:52:27] Received response 'textDocument/completion - (1)' in 41ms. Request failed: Internal Error - System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at AvaloniaLanguageServer.Services.Buffer.GetTextTillLine(Position position) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Services/Buffer.cs:line 8
   at AvaloniaLanguageServer.Services.BufferService.GetTextTillPosition(DocumentUri key, Position position) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Services/BufferService.cs:line 22
   at AvaloniaLanguageServer.Handlers.CompletionHandler.Handle(CompletionParams request, CancellationToken cancellationToken) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Handlers/CompletionHandler.cs:line 29
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.SemanticTokensDeltaPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.ResolveCommandPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPreProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPostProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.<RouteRequest>g__InnerRoute|7_0(IServiceScopeFactory serviceScopeFactory, Request request, TDescriptor descriptor, Object params, CancellationToken token, ILogger logger)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.RouteRequest(IRequestDescriptor`1 descriptors, Request request, CancellationToken token)
   at OmniSharp.Extensions.JsonRpc.DefaultRequestInvoker.<>c__DisplayClass10_0.<<RouteRequest>b__5>d.MoveNext() (-32603).
2024-03-05 15:52:27.736 [info] [Error - 15:52:27] Request textDocument/completion failed.
2024-03-05 15:52:27.736 [info]   Message: Internal Error - System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at AvaloniaLanguageServer.Services.Buffer.GetTextTillLine(Position position) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Services/Buffer.cs:line 8
   at AvaloniaLanguageServer.Services.BufferService.GetTextTillPosition(DocumentUri key, Position position) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Services/BufferService.cs:line 22
   at AvaloniaLanguageServer.Handlers.CompletionHandler.Handle(CompletionParams request, CancellationToken cancellationToken) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Handlers/CompletionHandler.cs:line 29
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.SemanticTokensDeltaPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.ResolveCommandPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPreProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPostProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.<RouteRequest>g__InnerRoute|7_0(IServiceScopeFactory serviceScopeFactory, Request request, TDescriptor descriptor, Object params, CancellationToken token, ILogger logger)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.RouteRequest(IRequestDescriptor`1 descriptors, Request request, CancellationToken token)
   at OmniSharp.Extensions.JsonRpc.DefaultRequestInvoker.<>c__DisplayClass10_0.<<RouteRequest>b__5>d.MoveNext()
  Code: -32603

doxxx · 2024-03-05T20:47:18Z

I have the same problem, even after updating all the Avalonia packages in my project to 11.0.9 and with extension v0.0.31.

I'm running VS Code on Windows but connected to WSL.

doxxx · 2024-03-05T20:52:22Z

However, the same happens for a project opened from the Windows filesystem.

prashantvc · 2024-03-28T08:11:26Z

@doxxx the WSL support is untested. Let me check this one windows

AedDev · 2024-05-18T12:41:51Z

I changed the extension to v0.0.29, and the problem has been resolved.

Same issue here. Installed the latest versions of Avalonia.Templates which is 11.0.11 at the time of writing and the Avalonia VS Code Extension in version 0.0.31. Downgraded to 0.0.29 resolved the issue.

I am working on Pop!OS Linux by System76. VS Code is installed via flatpak.

Steps to reproduce:

Install .NET 8 SDK
Install VS Code from Flatpak (latest version)
Install the Avalonia VS Code Extension (0.0.31 in my case, or 0.0.30 as stated in the comments above)
Install Avalonia.Templates
Create new MVVM Project dotnet new avalonia.mvvm
Open up the MainWindow.axaml file
Type a < somewhere in the document
Error message will pop up:

2024-05-18 14:33:05.639 [info] [Trace - 2:33:05 PM] Sending notification 'textDocument/didChange'.
2024-05-18 14:33:05.639 [info] [Trace - 2:33:05 PM] Sending request 'textDocument/completion - (1)'.
2024-05-18 14:33:05.674 [info] [Trace - 2:33:05 PM] Received notification 'window/logMessage'.
2024-05-18 14:33:05.674 [info] [Error - 2:33:05 PM] OmniSharp.Extensions.JsonRpc.DefaultRequestInvoker: Failed to handle request textDocument/completion 1 - System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at AvaloniaLanguageServer.Services.Buffer.GetTextTillLine(Position position) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Services/Buffer.cs:line 8
   at AvaloniaLanguageServer.Services.BufferService.GetTextTillPosition(DocumentUri key, Position position) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Services/BufferService.cs:line 22
   at AvaloniaLanguageServer.Handlers.CompletionHandler.Handle(CompletionParams request, CancellationToken cancellationToken) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Handlers/CompletionHandler.cs:line 29
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.SemanticTokensDeltaPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.ResolveCommandPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPreProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPostProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.<RouteRequest>g__InnerRoute|7_0(IServiceScopeFactory serviceScopeFactory, Request request, TDescriptor descriptor, Object params, CancellationToken token, ILogger logger)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.RouteRequest(IRequestDescriptor`1 descriptors, Request request, CancellationToken token)
   at OmniSharp.Extensions.JsonRpc.DefaultRequestInvoker.<>c__DisplayClass10_0.<<RouteRequest>b__5>d.MoveNext() | Method='textDocument/completion' RequestId='1'
2024-05-18 14:33:05.679 [info] [Trace - 2:33:05 PM] Received response 'textDocument/completion - (1)' in 40ms. Request failed: Internal Error - System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at AvaloniaLanguageServer.Services.Buffer.GetTextTillLine(Position position) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Services/Buffer.cs:line 8
   at AvaloniaLanguageServer.Services.BufferService.GetTextTillPosition(DocumentUri key, Position position) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Services/BufferService.cs:line 22
   at AvaloniaLanguageServer.Handlers.CompletionHandler.Handle(CompletionParams request, CancellationToken cancellationToken) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Handlers/CompletionHandler.cs:line 29
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.SemanticTokensDeltaPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.ResolveCommandPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPreProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPostProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.<RouteRequest>g__InnerRoute|7_0(IServiceScopeFactory serviceScopeFactory, Request request, TDescriptor descriptor, Object params, CancellationToken token, ILogger logger)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.RouteRequest(IRequestDescriptor`1 descriptors, Request request, CancellationToken token)
   at OmniSharp.Extensions.JsonRpc.DefaultRequestInvoker.<>c__DisplayClass10_0.<<RouteRequest>b__5>d.MoveNext() (-32603).
2024-05-18 14:33:05.680 [info] [Error - 2:33:05 PM] Request textDocument/completion failed.
2024-05-18 14:33:05.680 [info]   Message: Internal Error - System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at AvaloniaLanguageServer.Services.Buffer.GetTextTillLine(Position position) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Services/Buffer.cs:line 8
   at AvaloniaLanguageServer.Services.BufferService.GetTextTillPosition(DocumentUri key, Position position) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Services/BufferService.cs:line 22
   at AvaloniaLanguageServer.Handlers.CompletionHandler.Handle(CompletionParams request, CancellationToken cancellationToken) in /Users/prashantvc/Avalonia/src/AvaloniaLSP/AvaloniaLanguageServer/Handlers/CompletionHandler.cs:line 29
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.SemanticTokensDeltaPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.LanguageServer.Server.Pipelines.ResolveCommandPipeline`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPreProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestPostProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at MediatR.Pipeline.RequestExceptionActionProcessorBehavior`2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.<RouteRequest>g__InnerRoute|7_0(IServiceScopeFactory serviceScopeFactory, Request request, TDescriptor descriptor, Object params, CancellationToken token, ILogger logger)
   at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1.RouteRequest(IRequestDescriptor`1 descriptors, Request request, CancellationToken token)
   at OmniSharp.Extensions.JsonRpc.DefaultRequestInvoker.<>c__DisplayClass10_0.<<RouteRequest>b__5>d.MoveNext()
  Code: -32603

aneeskA · 2024-07-05T13:58:34Z

If this helps anyone, 0.0.31 had issues. Downgrading to 0.0.29 resolved the issue.

tmp64 · 2024-11-02T05:01:16Z

Can confirm that the issue is fixed in latest commits. But you have to build the latest AvaloniaLSP manually.

marcin-przywoski · 2024-11-26T00:03:59Z

@tmp64 how do I do that?

tmp64 · 2024-11-26T05:02:46Z

@tmp64 how do I do that?

Clone this repo, build src/AvaloniaLSP (in Visual Studio or with dotnet build) and replace the original version in C:\Users\user.vscode\extensions\avaloniateam.vscode-avalonia-0.0.31\

RegreTTO added the bug Something isn't working label Feb 13, 2024

MikeCodesDotNET transferred this issue from AvaloniaUI/Avalonia Feb 13, 2024

prashantvc self-assigned this Feb 14, 2024

calee88 mentioned this issue Feb 17, 2024

request textDocument/completion failed #113

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microhobby mentioned this issue Jul 8, 2024

Fix buffer index crashes #126

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VScode Avalonia XAML autocompletion doesn't work #110

VScode Avalonia XAML autocompletion doesn't work #110

RegreTTO commented Feb 13, 2024 •

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aneeskA commented Jul 5, 2024

tmp64 commented Nov 2, 2024

marcin-przywoski commented Nov 26, 2024

tmp64 commented Nov 26, 2024

VScode Avalonia XAML autocompletion doesn't work #110

VScode Avalonia XAML autocompletion doesn't work #110

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RegreTTO commented Feb 13, 2024 • edited Loading

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tmp64 commented Nov 26, 2024

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