When is CompilationProvider triggered if used as a ValueProvider for Source Generation?

[thomhurst]

If I was to do something like this, when/how often would it trigger?

context.RegisterSourceOutput(context.CompilationProvider, (productionContext, compilation) => GenerateCode(productionContext, compilation));

I want to run the source generator once, since I just want to generate some metadata about the project, so I don't need to inspect the code and inspect SyntaxNodes.
However as part of my generator, I do need access to the Compilation object. So I was assuming the CompilationProvider would make the most sense? I have tried CompilationProvider, but my generated classes don't seen to be available in the IDE.

If I emit them in the csproj, I can see they get generated on a build, but does that mean they're not available before that?
I need them available to users before they build, like keystroke/syntax node source generators would be.

[333fred]

when/how often would it trigger?

Every keystroke. Do not do this. Make an equatable model to at least dampen the impact.

[Dreamescaper]

74032 is about a button we added to explicitly dump cached generator state (regardless of balanced or automatic mode) in case an incremental generator stores invalid intermediary data.

Maybe it's not related from technical side, but it's related from use-case perspective. SG doesn't update the file due to 75586, therefore I'm trying to force it to regenerate by pressing that button, and I get VS completely broken until restart due to 74032. So it's probably not surprising that Balanced mode feels half-baked at least in my particular case.

Sorry, if I might sound overly aggressive. Sometimes I am confused by the priorities, but I do realize I probably don't see the whole picture.

In this case, I think that most people simply don't care about such issues, and fine with the source generator working only on build. Very small amount of people use source generators explicitly in day-to-day work, and a tiny fraction of those develop SGs. Contrary to simply writing regular code, which automatic mode heavily affected.

[CyrusNajmabadi]

In this case, I think that most people simply don't care about such issues

The number of reports we got about performance was very high. Many people had serious and significant slowdowns that made vs much worse (or even unusable).

Again, if you are having issues with balanced mode, then go back to automatic mode. It's an option for that reason, and we have no plans to remove the option.

[thomhurst]

Is this a Visual Studio thing? I'm using Rider

[CyrusNajmabadi]

Yes. Roslyn is the impl of C# that operates in VS. Rider is entirely different and issues you're running into should go to them.

[thomhurst]

I think it's a rider IDE issue I'm experiencing actually. My app compiles and builds, but Rider says source generated types are missing. But they're clearly not if it runs fine.