codec: Added simple schema build helper

1 files changed, 46 insertions, 0 deletions

diff --git a/modules/codec/c++/schema_builder.h b/modules/codec/c++/schema_builder.h
new file mode 100644
index 0000000..91094fe
--- /dev/null
+++ b/modules/codec/c++/schema_builder.h
@@ -0,0 +1,46 @@
+#pragma once
+
+#include "schema.h"
+
+namespace saw {
+template<typename T>
+struct schema_factory {
+		using Schema = T;
+		static_assert(always_false<T>, "Not supported");
+};
+
+template<typename... T, string_literal... Keys>
+struct schema_factory<schema::Struct<schema::Member<T,Keys>...>> {
+		using Schema = schema::Struct<schema::Member<T,Keys>...>;
+
+		template<typename TA, string_literal KA>
+		constexpr schema_factory<schema::Struct<schema::Member<T,Keys>...,schema::Member<TA,KA>>> add() const noexcept {
+				return {};
+		}
+};
+
+template<typename... T, string_literal... Keys>
+struct schema_factory<schema::Union<schema::Member<T,Keys>...>> {
+		using Schema = schema::Union<schema::Member<T,Keys>...>;
+
+		template<typename TA, string_literal KA>
+		constexpr schema_factory<schema::Union<schema::Member<T,Keys>...,schema::Member<TA,KA>>> add() const noexcept {
+				return {};
+		}
+};
+
+template<typename... T>
+struct schema_factory<schema::Tuple<T...>> {
+		using Schema = schema::Tuple<T...>;
+
+		template<typename TA>
+		constexpr schema_factory<schema::Tuple<T...,TA>> add() const noexcept {
+				return {};
+		}
+};
+
+template<typename T>
+constexpr schema_factory<T> build_schema() noexcept {
+		return {};
+}
+}