If else built in elixir using macros

ifx.exs

defmodule My do
  defmacro ifx(conds, [do: code1, else: code2]) do
    quote do
      case unquote conds do
        true -> unquote code1
        _    -> unquote code2
      end
    end
  end
end

defmodule Test do
  require My
  
  def demo do
    a = 10
    My.ifx a == 10 do
      IO.puts "yes"
    else
      IO.puts "no"
    end
  end
end

Test.demo()