1use proc_macro::TokenStream;
2use quote::quote;
3use syn::DeriveInput;
4
5#[proc_macro_derive(New)]
6pub fn derive(input: TokenStream) -> TokenStream {
7 let input = syn::parse_macro_input!(input as DeriveInput);
8 let ident = &input.ident;
9 let builder_ident = syn::Ident::new(&format!("New{}", ident), ident.span());
10
11 let expanded = quote! {
12 pub struct #builder_ident {
13
14 }
15
16 impl #builder_ident {
17
18 }
19 };
20
21 expanded.into()
22}
23
24#[cfg(test)]
25mod tests {
26 #[test]
27 fn test_name() {
28 let t = trybuild::TestCases::new();
29 t.pass("tests/ui/01-parse.rs");
30 }
31}