Hello, Based on typed_struct/lib/typed_struct.ex at main · ejpcmac/typed_struct · GitHub , I am practicing to learn more about macro in elixir, all the things are good but I can not delete the attr I register in module.

For example this is my macro

  @temporary_revaluation [
    :gs_fields,
    :gs_types,
    :gs_enforce_keys
  ]

defmacro guardedstruct(opts \\ [], do: block) do
    ast = register_struct(block, opts)
    quote do
        (fn -> unquote(ast) end).()
    end
end

def register_struct(block, opts) do
    quote do
        Enum.each(unquote(@temporary_revaluation), fn attr ->
        Module.register_attribute(__MODULE__, attr, accumulate: true)
        end)
    
        Module.put_attribute(__MODULE__, :gs_enforce?, unquote(!!opts[:enforce]))
        @before_compile {unquote(__MODULE__), :delete_temporary_revaluation}
        ...
    end
end

So the macro deletes attrs is:

  defmacro delete_temporary_revaluation(%Macro.Env{module: module}) do
    Enum.each(unquote(@temporary_revaluation), &Module.delete_attribute(module, &1))
  end

With these codes I try to delete module attributes. but inside the module I use this macro, I can still access to all the

  @temporary_revaluation [
    :gs_fields,
    :gs_types,
    :gs_enforce_keys
  ]

For example:

defmodule MishkaPub.ActivityStream.Type.Object do
  use GuardedStruct
  guardedstruct do
    field(:id, String.t())
    field(:type, String.t())
  end
  
  def list_attributes do
    @gs_fields
  end
end

As you see I can print @gs_fields. but inside the macro I tell delete all of them before compile!!

I want to handle this inside macro not the module

Please help me to find what is the problem?

Full code:

Thank you in advance