From 2dd333c909748e7e735be3e302c8e7a0993bbbec Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Mon, 22 Jan 2024 19:05:23 +0100
Subject: codec: Adding more hashing cases

---
 modules/codec/c++/schema_hash.h | 67 +++++++++++++++++++++++++++++++++++++++++
 modules/codec/tests/schema.cpp  |  7 ++++-
 2 files changed, 73 insertions(+), 1 deletion(-)

(limited to 'modules/codec')

diff --git a/modules/codec/c++/schema_hash.h b/modules/codec/c++/schema_hash.h
index 48e8d6c..29afa5e 100644
--- a/modules/codec/c++/schema_hash.h
+++ b/modules/codec/c++/schema_hash.h
@@ -100,6 +100,31 @@ struct schema_hash_seed<schema::Array<T,N>> {
 	}
 };
 
+template<typename... T>
+struct schema_hash_seed<schema::Tuple<T...>> {
+	using Schema = schema::Tuple<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+1) < sizeof...(T) ){
+			return apply_ele<i+1>(seed);
+		}
+		return seed;
+	}
+
+
+	static constexpr uint32_t apply(uint32_t seed){
+		seed = hash_literal<Schema::name>::apply(seed);
+		if constexpr (sizeof...(T) > 0){
+			seed = apply_ele<0>(seed);
+		}
+		return seed;
+	}
+};
+
 template<typename... V, string_literal... K>
 struct schema_hash_seed<schema::Struct<schema::Member<V,K>...>> {
 	using Schema = schema::Struct<schema::Member<V,K>...>;
@@ -129,6 +154,48 @@ struct schema_hash_seed<schema::Struct<schema::Member<V,K>...>> {
 	}
 };
 
+template<typename Req, typename Resp>
+struct schema_hash_seed<schema::Function<Req, Resp>> {
+	using Schema = schema::Function<Req,Resp>;
+
+	static constexpr uint32_t apply(uint32_t seed){
+		seed = hash_literal<Schema::name>::apply(seed);
+		seed = schema_hash_seed<Req>::apply(seed);
+		seed = schema_hash_seed<Resp>::apply(seed);
+		return seed;
+	}
+};
+
+template<typename... T, string_literal... Names>
+struct schema_hash_seed<schema::Interface<schema::Member<T, Names>...>> {
+	using Schema = schema::Interface<schema::Member<T,Names>...>;
+
+	template<uint64_t i>
+	static constexpr uint32_t apply_ele(uint32_t seed){
+		using Type = typename parameter_pack_type<i,T...>::type;
+		constexpr string_literal Lit = parameter_key_pack_type<i,Names...>::literal;
+		using MemberT = schema::Member<Type,Lit>;
+
+		seed = hash_literal<MemberT::name>::apply(seed);
+		seed = schema_hash_seed<Type>::apply(seed);
+		seed = hash_literal<Lit>::apply(seed);
+
+		if constexpr ( (i+1) < sizeof...(T) ){
+			return apply_ele<i+1>(seed);
+		}
+
+		return seed;
+	}
+
+	static constexpr uint32_t apply(uint32_t seed){
+		seed = hash_literal<Schema::name>::apply(seed);
+		if constexpr ( sizeof...(T) > 0){
+			seed = apply_ele<0>(seed);
+		}
+		return seed;
+	}
+};
+
 template<typename Schema>
 struct schema_hash {
 	static constexpr uint32_t apply() {
diff --git a/modules/codec/tests/schema.cpp b/modules/codec/tests/schema.cpp
index 71e806d..31c68f2 100644
--- a/modules/codec/tests/schema.cpp
+++ b/modules/codec/tests/schema.cpp
@@ -44,6 +44,10 @@ struct schema_hash_test_multi {
 
 namespace schema {
 using namespace saw::schema;
+
+using HashIface = Interface<
+	Member<Function<Tuple<UInt16>, UInt32>, "foo">
+>;
 }
 
 SAW_TEST("Schema Hashes"){
@@ -62,7 +66,8 @@ SAW_TEST("Schema Hashes"){
 		schema_test_pair<schema::SignedInteger, 2923333106>,
 		schema_test_pair<schema::UnsignedInteger, 3300532028>,
 		schema_test_pair<schema::FloatingPoint, 1860828258>,
-		schema_test_pair<schema::String, 1669061438>
+		schema_test_pair<schema::String, 1669061438>,
+		schema_test_pair<schema::HashIface, 3365712860>
 	>::check();
 }
 }
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