add EnumSerializer

common/yas_enum.hh

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <string_view>
+
+#include <yas/serialize.hpp>
+#include <yas/types/std/string.hpp>
+
+namespace nf7 {
+
+template <
+  typename T,
+  const char* (*Stringify)(T),
+  T (*Parse)(std::string_view)>
+struct EnumSerializer {
+ public:
+  static auto& save(auto& ar, auto t) {
+    const std::string v = Stringify(t);
+    ar(v);
+    return ar;
+  }
+  static auto& load(auto& ar, auto& t) {
+    std::string v;
+    ar(v);
+    t = Parse(v);
+    return ar;
+  }
+};
+
+}  // namespace nf7