inheritance_example.ex

defmodule LivingThing do
  use GenObject, [
    ..living traits...
  ]
  ...living functions...
end

defmodule Mammal do
  use LivingThing, [
    ...
  ]
  
  defmacro __using__(fields) do
    quote do
      use Furred
      require Inherit
      Inherit.setup(unquote(__MODULE__), unquote(fields))
    end
  end
end

defmodule Dog do
  use Mammal, [
    name: "",
    breed: "",
    colors: [],
    hypoallegenic?: true
  ]
  
  defmacro __using__(fields) do
    use Trainable
    use Breedable
    require Inherit
    Inherit.setup(unquote(__MODULE__), unquote(fields))  
  end
end

defmodule GoldenDoodle do
  use Dog, [
    breed: :golen_doodle
    hypoallegenic?: true,
    colors: [:yellow]
  ]
end

defmodule Lab do
  use Dog, [
    breed: :lab
  ]
end

defmodule ChocolateLab do
  use Lab, [
    colors: [:chocolate]
  ]
end

ChocolateLab.new(name: "Wiley")
GoldenDoodle.new(name: "Boomer")