macro.rs

use schemars::JsonSchema;
use serde::{Deserialize, Serialize};

macro_rules! _macro {
    (
        $(#[$outer_derive:meta])*
        $outer:ident {
            $($(#[$inner_derive:meta])*
            $inner:ident {
                $( $(#[$field_attribute:meta])*
                   $field:ident : $ty:ty),*
            })*
        }
    ) => {

        $(
            $(#[$inner_derive])*
            pub struct $inner {
                $(
                    $(#[$field_attribute])*
                    pub $field: $ty
                ),*
            }
        )*

        $(#[$outer_derive])*
        pub enum $outer {
            $(
                $inner($inner)
            ),*
        }
    }
}

_macro!(
    #[derive(Serialize, Deserialize, Debug, JsonSchema)]
    Test {
        #[derive(Serialize, Deserialize, Debug, JsonSchema)]
        TestInner {}
    }

);

#[derive(Serialize, Deserialize, Debug, JsonSchema)]
pub enum Test2 {
    TestInner2(TestInner2),
}

#[derive(Serialize, Deserialize, Debug, JsonSchema)]
pub struct TestInner2 {}

fn main() {
    println!("{:?}", TestInner {});
    println!("{:?}", TestInner2 {});
}