Way to step in macro_rule?

1

Hi,

Is there a way to debug step by step a macro_rule? Right now, when debugging, the whole macro is skipped (but executed). "Step into" happily skips it.

fn main() {
    macro_rules! kut {
        () => {
            println!("A");

            println!("B");
        };
    };

    kut!();
}

Right now, I have to manuallly click on kut!(), ask rust-analyzer to expand recursively, copy/paste, comment out the kut!(); and debug.

Also, I can't put breakpoints inside the macro_rules scope.

That's inconvenient.

I use VS Code + LLDB, nightly rust toolchain.

Is there a quicker way to do it (if at all)?

Thanks

2

This does not answer the question you asked, but does GitHub - dtolnay/cargo-expand: Subcommand to show result of macro expansion solve your problem? Generally I find just staring at the output to be most efficient.

3

I tried this extension but it does the same as rust-analyzer.

I changed my route and just call a function inside the macro for now.

Then, I have the usual debugging experience.. But an "in-place" expansion would be nice to have while debugging.. If some Jetbrain or Microsoft hackers read this..