+
+ def stringify_keys(nil), do: nil
+
+ def stringify_keys(key) when key in [true, false], do: key
+ def stringify_keys(key) when is_atom(key), do: Atom.to_string(key)
+
+ def stringify_keys(map) when is_map(map) do
+ map
+ |> Enum.map(fn {k, v} -> {stringify_keys(k), stringify_keys(v)} end)
+ |> Enum.into(%{})
+ end
+
+ def stringify_keys([head | rest] = list) when is_list(list) do
+ [stringify_keys(head) | stringify_keys(rest)]
+ end
+
+ def stringify_keys(key), do: key
+
+ defmacro guards_config(config_path) do
+ quote do
+ initial_setting = Config.get(config_path)
+
+ Config.put(config_path, true)
+ on_exit(fn -> Config.put(config_path, initial_setting) end)
+ end
+ end