WIP implementing handling #[cfg] and #[cfg_attr] in proc macro inputs

crates/fayalite-proc-macros/src/lib.rs

@@ -27,3 +27,12 @@ pub fn hdl(
         Err(err) => err.into_compile_error().into(),
     }
 }
+
+#[doc(hidden)]
+#[proc_macro]
+pub fn __after_cfg_expansion(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
+    match fayalite_proc_macros_impl::after_cfg_expansion(input.into()) {
+        Ok(retval) => retval.into(),
+        Err(err) => err.into_compile_error().into(),
+    }
+}