riptc_bridge_macros/
lib.rs

1use proc_macro::TokenStream;
2
3/// Indicates to riptc that a type should be generated and shared despite not being
4/// a direct dependency of a route that we have detected.
5///
6/// This macro in and of itself doesn't do anything, it simply regurgitates your code back out.
7#[proc_macro_derive(Riptc)]
8pub fn riptc_marker(input: TokenStream) -> TokenStream {
9    // we just do this by hand here because we are simply implementing a marker
10    // trait and we don't want to bring in syn / quote for no reason and bloat compile times
11    let type_name = input
12        .into_iter()
13        .find_map(|token| {
14            if let proc_macro::TokenTree::Ident(ident) = token {
15                Some(ident.to_string())
16            } else {
17                None
18            }
19        })
20        .expect("no type name");
21
22    let output = format!(
23        "#[automatically_derived] impl ::riptc_bridge::Riptc for {} {{}}",
24        type_name
25    );
26
27    output.parse().unwrap()
28}
riptc_bridge_macros/lib.rs

riptc_bridge_macros/
lib.rs
