[O# Parity] Support dotnet script (.csx) files

[awa5114]

Type: Bug

Issue Description

Steps to Reproduce

1. Create folder md scripting
2. Navigate to the folder cd scripting
3. Create a scripting project dotnet script init
4. Add a file bye.csx
5. Add some code into this file, e.g. Console.WriteLine("test");

Expected Behavior

The syntax highlighting works for file bye.csv

Actual Behavior

• There is no syntax highlighting.
• The error Request textDocument/signatureHelp failed appears
  
• The output log shows another error:

Using dotnet configured on PATH
Dotnet path: C:\Program Files\dotnet\dotnet.exe
Activating C# + C# Dev Kit + C# IntelliCode...
[Info  - 4:07:33 PM] [Program]Language server initialized
[Error - 4:07:50 PM] [LanguageServerHost]System.InvalidOperationException: Unexpected false - line 68
   at Roslyn.Utilities.Contract.Fail(String message, Int32 lineNumber) in /_/src/Workspaces/SharedUtilitiesAndExtensions/Compiler/Core/Utilities/Contract.cs:line 154
   at Microsoft.CodeAnalysis.CSharp.SignatureHelp.InvocationExpressionSignatureHelpProviderBase.GetAccessibleMethods(InvocationExpressionSyntax invocationExpression, SemanticModel semanticModel, ISymbol within, IEnumerable`1 methodGroup, CancellationToken cancellationToken) in /_/src/Features/CSharp/Portable/SignatureHelp/InvocationExpressionSignatureHelpProviderBase_MethodGroup.cs:line 68
   at Microsoft.CodeAnalysis.CSharp.SignatureHelp.InvocationExpressionSignatureHelpProviderBase.GetItemsWorkerAsync(Document document, Int32 position, SignatureHelpTriggerInfo triggerInfo, SignatureHelpOptions options, CancellationToken cancellationToken) in /_/src/Features/CSharp/Portable/SignatureHelp/InvocationExpressionSignatureHelpProvider.cs:line 98
   at Microsoft.CodeAnalysis.SignatureHelp.AbstractSignatureHelpProvider.GetItemsAsync(Document document, Int32 position, SignatureHelpTriggerInfo triggerInfo, SignatureHelpOptions options, CancellationToken cancellationToken) in /_/src/Features/Core/Portable/SignatureHelp/AbstractSignatureHelpProvider.cs:line 245
   at Microsoft.CodeAnalysis.LanguageServer.Handler.SignatureHelpHandler.HandleRequestAsync(TextDocumentPositionParams request, RequestContext context, CancellationToken cancellationToken) in /_/src/Features/LanguageServer/Protocol/Handler/SignatureHelp/SignatureHelpHandler.cs:line 58
   at Microsoft.CommonLanguageServerProtocol.Framework.QueueItem`3.StartRequestAsync(TRequestContext context, CancellationToken cancellationToken)
[Error - 4:07:50 PM] Request textDocument/signatureHelp failed.
  Message: Unexpected false - line 68
  Code: -32000 
[object Object]
Using dotnet configured on PATH

Logs

C# log

Post the output from Output-->C# here

C# LSP Trace Logs

Post the output from Output-->C# LSP Trace Logs here. Requires `dotnet.server.trace` to be set to `Trace`

Environment information

VSCode version: 1.82.2
C# Extension: 2.1.2
Using OmniSharp: false

Dotnet Information

Error running dotnet --info: Error: Command failed: C:\Program Files\dotnet\dotnet.exe --info 'C:\Program' is not recognized as an internal or external command, operable program or batch file.

'C:\Program' is not recognized as an internal or external command,
operable program or batch file.

Visual Studio Code Extensions

Extension	Author	Version	Folder Name
csdevkit	ms-dotnettools	0.4.10	ms-dotnettools.csdevkit-0.4.10-win32-x64
csharp	ms-dotnettools	2.1.2	ms-dotnettools.csharp-2.1.2-win32-x64
dotnet-interactive-vscode	ms-dotnettools	1.0.4461040	ms-dotnettools.dotnet-interactive-vscode-1.0.4461040
jupyter	ms-toolsai	2023.8.1002501831	ms-toolsai.jupyter-2023.8.1002501831-win32-x64
jupyter-keymap	ms-toolsai	1.1.2	ms-toolsai.jupyter-keymap-1.1.2
jupyter-renderers	ms-toolsai	1.0.17	ms-toolsai.jupyter-renderers-1.0.17
LiveServer	ritwickdey	5.7.9	ritwickdey.liveserver-5.7.9
msbuild-project-tools	tintoy	0.4.9	tintoy.msbuild-project-tools-0.4.9
pdf	tomoki1207	1.2.2	tomoki1207.pdf-1.2.2
powershell	ms-vscode	2023.6.0	ms-vscode.powershell-2023.6.0
python	ms-python	2023.16.0	ms-python.python-2023.16.0
run-on-save	pucelle	1.6.0	pucelle.run-on-save-1.6.0
vscode-dotnet-pack	ms-dotnettools	1.0.12	ms-dotnettools.vscode-dotnet-pack-1.0.12
vscode-dotnet-runtime	ms-dotnettools	1.7.3	ms-dotnettools.vscode-dotnet-runtime-1.7.3
vscode-jupyter-cell-tags	ms-toolsai	0.1.8	ms-toolsai.vscode-jupyter-cell-tags-0.1.8
vscode-jupyter-slideshow	ms-toolsai	0.1.5	ms-toolsai.vscode-jupyter-slideshow-0.1.5
vscode-pylance	ms-python	2023.9.20	ms-python.vscode-pylance-2023.9.20
vscodeintellicode-csharp	ms-dotnettools	0.1.26	ms-dotnettools.vscodeintellicode-csharp-0.1.26-win32-x64

Extension version: 2.1.2
VS Code version: Code 1.82.2 (abd2f3db4bdb28f9e95536dfa84d8479f1eb312d, 2023-09-14T05:55:25.390Z)
OS version: Windows_NT x64 10.0.19044
Modes:

System Info

Item	Value
CPUs	11th Gen Intel(R) Core(TM) i9-11950H @ 2.60GHz (16 x 2611)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled
Load (avg)	undefined
Memory (System)	63.67GB (48.67GB free)
Process Argv	. --crash-reporter-id 9b73ea97-bda1-4db3-9fce-24ce43b1d8af
Screen Reader	no
VM	0%

A/B Experiments

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vscaat:30438848
vsclangdc:30486549
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pythongtdpath:30769146
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pythonnosmt12:30797651
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[bowtiedgnome]

Ran into this issue tonight.

I had to add the following change to vscode settings

{
    "dotnet.server.useOmnisharp": true
}

Then I disabled the Dev Kit extension for a specific workspace where I'm writing dotnet script files. Doing this only affects that workspace and leaves the DevKit extension enabled globally for other workspaces where I'm writing typical libs or apps.

Once I disable the extension and reloaded vscode, it downloaded omnisharp. Then I had to reload vscode and restart the omnisharp server to get intellisense working.

Ideally it shouldn't require any configuration on the user's part to use dotnet script, but the above seems to work for now.

[dibarbet]

CSX support is still missing from the new server, for now the workaround is to set dotnet.server.useOmnisharp to true as mentioned above.

[1m188]

I'm having a similar issue as well, and the above workaround does work. However, the resulting inconsistencies in the configuration behavior of the global project are unacceptable, and it is hoped that the configuration behavior of the script mode and the development mode can be unified.