chore: initial draft of proc macros

python-utils-macros-impl/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "python-utils-macros-impl"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+proc-macro2 = "1.0.106"
+quote = "1.0.46"
+syn = "2.0.118"

python-utils-macros-impl/src/lib.rs

@@ -0,0 +1,17 @@
+use proc_macro2::TokenStream;
+use quote::quote;
+use syn::{DeriveInput, parse_macro_input};
+
+pub fn py_from_str(input: TokenStream) -> TokenStream {
+    let derive_input: DeriveInput = parse_macro_input!(input);
+
+    let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
+
+    let expanded = quote! {
+        impl #impl_generics MyTrait for #name #ty_generics #where_clause {
+            // ...
+        }
+    };
+
+    expanded
+}