fix locking logic

patch-db-derive/src/lib.rs

@@ -0,0 +1,13 @@
+extern crate proc_macro;
+
+use proc_macro::TokenStream;
+
+#[proc_macro_derive(Model, attributes(serde))]
+pub fn model_derive(input: TokenStream) -> TokenStream {
+    // Construct a representation of Rust code as a syntax tree
+    // that we can manipulate
+    let ast = syn::parse(input).unwrap();
+
+    // Build the trait implementation
+    patch_db_derive_internals::build_model(&ast).into()
+}