1use proc_macro::TokenStream;
2use quote::quote;
3use syn::{parse_macro_input, Data, DeriveInput};
4
5#[proc_macro_derive(Config)]
6pub fn config(input: TokenStream) -> TokenStream {
7 let input = parse_macro_input!(input as DeriveInput);
8
9 let ident = input.ident;
10 let mut resolve_body = quote! {};
11
12 let fields = match input.data {
13 Data::Struct(s) => s.fields,
14 _ => panic!("Config must be Struct"),
15 };
16
17 for field in fields {
18 let field_name = field.ident.unwrap();
19 let line = quote! {
20 rd_interface::registry::ResolveNetRef::resolve(&mut self.#field_name, nets)?;
21 };
22 resolve_body.extend(line);
23 }
24
25 let expanded = quote! {
26 impl rd_interface::registry::ResolveNetRef for #ident {
27 fn resolve(&mut self, nets: &rd_interface::registry::NetMap) -> rd_interface::Result<()> {
28 #resolve_body
29 Ok(())
30 }
31 }
32 };
33
34 TokenStream::from(expanded)
35}