support deserialize.

include/Support/Serialize.h

@@ -1,6 +1,5 @@
 #pragma once
 
-
 #include <nlohmann/json.hpp>
 
 #include <Support/Reflection.h>
@@ -49,7 +48,32 @@ auto serialize(const Object& object) {
                 json.emplace(name, serialize(member));
             }
         });
-        return json;
+        return std::move(json);
+    }
+}
+
+template <typename Object>
+Object deserialize(const json& json) {
+    if constexpr(std::is_fundamental_v<Object> || std::is_same_v<Object, std::string_view> ||
+                 std::is_same_v<Object, std::string>) {
+        return json.get<Object>();
+    } else if constexpr(impl::is_vector_like_v<Object>) {
+        return json.get<Object>();
+    } else if constexpr(std::is_enum_v<Object>) {
+        return static_cast<Object>(json.get<std::underlying_type_t<Object>>());
+    } else {
+        Object object;
+        for_each(object, [&json](std::string_view name, auto& member) {
+            using Member = std::remove_cvref_t<decltype(member)>;
+            if constexpr(impl::is_optional_v<Member>) {
+                if(json.contains(name)) {
+                    member = deserialize<Member>(json[name]);
+                }
+            } else {
+                member = deserialize<Member>(json[name]);
+            }
+        });
+        return std::move(object);
     }
 }