"Inline macro" doesn't work inside proc_macro_attribute

[clouds56]

If I have normal function, I could expand macros like println inside it

fn test1() {
  println!("hello"); // I could do "inline macro" here
}

But I couldn't if the function under proc_macro_attribute like async_trait

#[async_trait]
impl A for S {
  fn test2() {
    println!("hello"); // I couldn't do "inline macro" here
  }
}

I know in some cases the outer proc_macro_attribute would change the AST inside it while I think in many cases it just keeps the inner TokenStream

[lnicola]

You can use the "Expand macro" command instead.

[clouds56]

You can use the "Expand macro" command instead.

I tried the "expand macro" command, it shows only Not available in [EXPANSION].rs in async_trait

#[async_trait]
impl A for S {
  fn test2() {
    println!("hello"); // I couldn't do "inline macro" here
  }
}

[lnicola]

Yeah, you have to expand the attribute macro (#[async_trait]). I'm not sure we can support quick fixes here. Ideally, it would work if you set:

   "rust-analyzer.procMacro.ignored": {
        "async-trait": [
            "async-trait"
        ]
    }

But it doesn't currently.