From 00689114da12f6ecdabcf47f6fe94ee80b7c8d15 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Mon, 14 Oct 2024 22:01:17 +0200
Subject: Get a list of types from Interfaces

---
 modules/codec/c++/schema.hpp | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/modules/codec/c++/schema.hpp b/modules/codec/c++/schema.hpp
index 40dfe39..e5560fb 100644
--- a/modules/codec/c++/schema.hpp
+++ b/modules/codec/c++/schema.hpp
@@ -322,4 +322,31 @@ template <typename T, size_t N> struct is_primitive<schema::Primitive<T,N>> {
 template <typename TI, typename TS> struct is_primitive<schema::MixedPrecision<TI,TS>> {
 	constexpr static bool value = true;
 };
+
+template<typename Iface>
+struct schema_iface_type_group {
+	static_assert(always_false<Iface>, "Expecting an Interface Type");
+
+	using Type = tmpl_group<>;
+};
+
+namespace impl {
+template<typename... Funcs>
+struct schema_func_list_helper {
+	using Type = tmpl_group<>;
+};
+
+template<typename F0, typename... Funcs>
+struct schema_func_list_helper<F0,Funcs...> {
+	using Type = typename tmpl_concat<
+		tmpl_group<typename F0::Request, typename F0::Response>,
+		typename schema_func_list_helper<Funcs...>::Type
+	>::type;
+};
+}
+
+template<typename... Funcs>
+struct schema_iface_type_group<schema::Interface<Funcs...>> {
+	using Type = typename tmpl_reduce<typename impl::schema_func_list_helper<Funcs...>::Type>::type;
+};
 } // namespace saw
-- 
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