From 69f6e59990f63e92ecf682419df14917bf819018 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Wojciech=20Przytu=C5=82a?= <wojciech.przytula@scylladb.com>
Date: Sun, 8 Dec 2024 09:04:01 +0100
Subject: [PATCH] macros: generate automatically_derived attribute

It is customary that auto-generated trait impls have that attribute.
Also, this disables dead code analysis for derived impls.
---
 scylla-macros/src/deserialize/mod.rs | 1 +
 scylla-macros/src/serialize/row.rs   | 1 +
 scylla-macros/src/serialize/value.rs | 1 +
 3 files changed, 3 insertions(+)

diff --git a/scylla-macros/src/deserialize/mod.rs b/scylla-macros/src/deserialize/mod.rs
index 2eb1819e4..074f37d8b 100644
--- a/scylla-macros/src/deserialize/mod.rs
+++ b/scylla-macros/src/deserialize/mod.rs
@@ -115,6 +115,7 @@ where
         let items = items.into_iter();
 
         parse_quote! {
+            #[automatically_derived]
             impl<#frame_lifetime, #metadata_lifetime, #impl_generics>
                 #trait_<#frame_lifetime, #metadata_lifetime> for #struct_name #ty_generics
             where #(#predicates),*
diff --git a/scylla-macros/src/serialize/row.rs b/scylla-macros/src/serialize/row.rs
index ffa2c7a2b..a1695fa57 100644
--- a/scylla-macros/src/serialize/row.rs
+++ b/scylla-macros/src/serialize/row.rs
@@ -102,6 +102,7 @@ pub(crate) fn derive_serialize_row(tokens_input: TokenStream) -> Result<syn::Ite
     let is_empty_item = gen.generate_is_empty();
 
     let res = parse_quote! {
+        #[automatically_derived]
         impl #impl_generics #implemented_trait for #struct_name #ty_generics #where_clause {
             #serialize_item
             #is_empty_item
diff --git a/scylla-macros/src/serialize/value.rs b/scylla-macros/src/serialize/value.rs
index d66c2930c..1072e33c8 100644
--- a/scylla-macros/src/serialize/value.rs
+++ b/scylla-macros/src/serialize/value.rs
@@ -128,6 +128,7 @@ pub(crate) fn derive_serialize_value(
     let serialize_item = gen.generate_serialize();
 
     let res = parse_quote! {
+        #[automatically_derived]
         impl #impl_generics #implemented_trait for #struct_name #ty_generics #where_clause {
             #serialize_item
         }