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A sandbox for Elixir to safely evaluate untrusted code from user input

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dune lib dune shims list.ex
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lib/dune/shims/list.ex 

defmodule Dune.Shims.List do

  @moduledoc false



  alias Dune.Shims



  # note: this is probably not safe so not actually used



  def to_existing_atom(env, list) when is_list(list) do

    string = to_string(list)

    # make sure it was actually a flat charlist and not an IO-list

    case to_charlist(string) do

      ^list -> Shims.String.to_existing_atom(env, string)

      _ -> List.to_existing_atom(list)

    end

  end



  def to_existing_atom(_env, list) do

    List.to_existing_atom(list)

  end

end