[Help] How to parsing multi recursive proc macros ?

[niuhuan]

I want parsing recursive like this ”any“，”all” proc content. Is there a simpler tool or example?

(command is convert fn to trait struct, like rocket get/post macros)

// get name content
#[event(command("hello {name}"))]
async fn hello( name: Option<String>) -> anyhow::Result<bool> {
    if name.is_none() {
        return Ok(false);
    }
    Ok(true)
}

// all , any 
#[event(all(command("hello {name}", filter = "i_am_filter")))]
async fn hello( name: Option<String>) -> anyhow::Result<bool> {
    if name.is_none() && name.unwrap().start_with("123") {
        return Ok(false);
    }
    event.send_message_to_source(format!("hello {}", name.unwrap()).parse_message_chain()).await.unwrap();
    Ok(true)
}

async fn i_am_filter( name: Option<String>) -> anyhow::Result<bool> {
    if name.is_none() {
        return Ok(false);
    }
   // do some
    Ok(true)
}

#[event(regexp("^123$"))]

[niuhuan]

#[proc_macro_error]
#[proc_macro_attribute]
pub fn event(args: TokenStream, input: TokenStream) -> TokenStream {
 let attrs = parse_macro_input!(args as syn::AttributeArgs);
}