Support Visual Studio Code Map

[xperiandri]

To understand complex solutions or debug complex code it is nice to be able to present it visually.
Visual Studio has an excellent Code Map feature but dropping F# solution or files onto a Code Map surface has no effect.

Describe the solution you'd like

Full support of Code Map generation and debugging on Code Map.

Additional context

Tested in Visual Studio Enterprise 2019 16.10.3

[dsyme]

It would be interesting to understand the technical basis of what is required here, and which parts are in dotnet/project, and which parts in PDB or IL generation, and which parts require more specific Roslyn-like work

[xperiandri]

@Pilchie do you know who owns this feature and can point to what is required for that?

[xperiandri]

@davkean, @srivatsn, maybe you have something to say or redirect to someone?

[davkean]

These features are typically built on top of CodeModel, https://docs.microsoft.com/en-us/dotnet/api/envdte.codemodel?view=visualstudiosdk-2019, which F# does not provide.

[dsyme]

These features are typically built on top of CodeModel, https://docs.microsoft.com/en-us/dotnet/api/envdte.codemodel?view=visualstudiosdk-2019, which F# does not provide.

If we wanted to play with this, which component in our implementation should provide this ? Could you point us to the Roslyn implementation?

Thanks!

[davkean]

SDK-based projects talk to Roslyn through this: https://github.com/dotnet/project-system/blob/main/src/Microsoft.VisualStudio.ProjectSystem.Managed.VS/ProjectSystem/VS/LanguageServices/ProjectContextCodeModelProvider.cs#L71.

[xperiandri]

Is this also enough for debugging on CodeMap?