Is it possible to add support for enum key based std::map?

[Zvicii]

Currently Im using the following workaround.

// std::map<enum, T>
template <typename TK, typename TV>
struct is_xpack_xtype<std::map<TK, TV>> {
    static bool const value = true;
};

template <class OBJ, typename TK, typename TV>
bool xpack_xtype_decode(OBJ& obj, const char* key, std::map<TK, TV>& val, const Extend* ext) {
    if constexpr (std::is_enum_v<TK>) {
        std::map<int64_t, TV> tmp;
        if (!obj.decode(key, tmp, ext)) {
            return false;
        }
        val.clear();
        for (auto&& item : tmp) {
            val[item.first] = item.second;
        }
        return true;
    } else {
        static_assert(false, "std::map with this key type is not supported to decode");
        return false;
    }
}

template <class OBJ, typename TK, typename TV>
bool xpack_xtype_encode(OBJ& obj, const char* key, const std::map<TK, TV>& val, const Extend* ext) {
    if constexpr (std::is_enum_v<TK>) {
        std::map<TK, TV> tmp;
        for (auto&& item : val) {
            tmp[item.first] = item.second;
        }
        return obj.encode(key, tmp, ext);
    } else {
        static_assert(false, "std::map with this key type is not supported to encode");
        return false;
    }
}

[xyz347]

try this branch
https://github.com/xyz347/xpack/tree/map-enum-key

[Zvicii]

try this branch https://github.com/xyz347/xpack/tree/map-enum-key

works like a charm, thx!