From 44f6a2ec37e35cf96419885be27afeab9ea84ec5 Mon Sep 17 00:00:00 2001
From: Claudius 'keldu' Holeksa <mail@keldu.de>
Date: Mon, 29 Jul 2024 14:53:48 +0200
Subject: wip

---
 modules/codec/c++/data.hpp        |  4 +++-
 modules/codec/c++/schema_hash.hpp | 27 ++++++++++++++++++++++++++-
 2 files changed, 29 insertions(+), 2 deletions(-)

(limited to 'modules/codec/c++')

diff --git a/modules/codec/c++/data.hpp b/modules/codec/c++/data.hpp
index a17f123..8e92622 100644
--- a/modules/codec/c++/data.hpp
+++ b/modules/codec/c++/data.hpp
@@ -21,7 +21,9 @@ struct Default {};
 }
 
 namespace encode {
-struct Native {};
+struct Native {
+	static constexpr string_literal name = "encode::Native";
+};
 }
 template<typename Schema, typename Encode, typename Storage = storage::Default>
 class codec;
diff --git a/modules/codec/c++/schema_hash.hpp b/modules/codec/c++/schema_hash.hpp
index 4b537e1..d653bf4 100644
--- a/modules/codec/c++/schema_hash.hpp
+++ b/modules/codec/c++/schema_hash.hpp
@@ -15,7 +15,9 @@ struct hash_literal {
 
 template<typename Schema>
 struct schema_hash_seed {
-		static_assert(always_false<Schema>, "Not schema_hashable");
+	static constexpr uint32_t apply(uint32_t seed){
+		return hash_literal<Schema::name>::apply(seed);
+	}
 };
 
 template<>
@@ -125,6 +127,29 @@ struct schema_hash_seed<schema::Tuple<T...>> {
 	}
 };
 
+template<typename... T>
+struct schema_hash_seed<tmpl_group<T...>> {
+	template<uint64_t i>
+	static constexpr uint32_t apply_ele(uint32_t seed){
+		using Type = typename parameter_pack_type<i,T...>::type;
+
+		seed = schema_hash_seed<Type>::apply(seed);
+		if constexpr ( (i+1u) < sizeof...(T) ){
+			return apply_ele<i+1u>(seed);
+		}
+
+		return seed;
+	}
+
+	static constexpr uint32_t apply(uint32_t seed){
+		seed = hash_literal<tmpl_group<T...>::name>::apply(seed);
+		if constexpr (sizeof...(T)>0u){
+			seed = apply_ele<0u>(seed);
+		}
+		return seed;
+	}
+};
+
 template<typename V, string_literal K>
 struct schema_hash_seed<schema::Member<V,K>> {
 	using Schema = schema::Member<V,K>;
-- 
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