How to create a declarative macro that turns the call below into result below..
The actual meta are not important just imagine any N number of meta's that need to be passed Turn
tuple_struct_with_attrs!( MyTupleStruct; #[derive(Debug)], #[serde(from = "f64")] );
into
#[derive(Debug)], #[serde(from = "f64")] struct Tuplestruct{ f6 );
What is the question?
how to create a delarative macro that turns code above into code below
It is not clear to me what rules your macro should follow to create the tuple struct. Like, what fields should the resulting struct have? Is it always just one f64? A naive macro that produces the output from your example would be:
f64
macro_rules! tuple_struct_with_attrs { ($name: ident ; $(#[$attribute: meta]),*) => { $(#[$attribute])* struct $name ( f64 ); } }
Playground.