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Monads and other dark magic (monoids, functors, traversables, &c)

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witchcraft lib witchcraft monad ast.ex

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lib/witchcraft/monad/ast.ex

defmodule Witchcraft.Monad.AST do
  @moduledoc false

  @doc false
  def preprocess(input, datatype) do
    # input
    # |> Witchcraft.Chain.AST.normalize()
    Macro.prewalk(input, fn
      {:return, _ctx, [inner]} ->
        quote do: Witchcraft.Applicative.pure(unquote(datatype), unquote(inner))

      ast ->
        ast
    end)
  end
end

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