Add support for SteppingGranularity in the UI

Having https://github.com/microsoft/vscode/issues/90793 is fantastic (and we just shipped a version of the Julia extension that supports this feature).

So now I’m of course wondering whether we could also have built-in support for SteppingGranularity from the DAP in the UI? 😃

[lemmy]

I’m working on a debugger for a state-based formalism (TLA+). While our default is ordinary statement/expressions-level stepping, I’d like to add state-level stepping (a state can span hundreds of statements). Are there plans to add UI in VSCode s.t. users can select the stepping granularity?

By the way, my current workaround is to dynamically change the debugger’s capability to step back; when the “Step Back” and “Reverse” buttons are gone, the debugger has state-level stepping granularity.

[Martoon-00]

I would find an option for switching to line stepping useful.

Also, letting the user switch to smaller granularities than statement, e.g. add expression granularity (when we visit each sub-expression step-by-step) would be nice in general, I believe. The order of expressions evaluation is not always apparent in languages and which expressions get evaluated may be helpful.