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Making dealing with results (ok/error) easy

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triage lib triage validate.ex
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lib/triage/validate.ex 

defmodule Triage.Validate do

  @moduledoc false



  def validate_result!(result, strict_or_loose, label \\ "Argument")



  def validate_result!(:ok, _, _), do: nil

  def validate_result!(:error, _, _), do: nil

  def validate_result!({:ok, _}, _, _), do: nil

  def validate_result!({:error, _}, _, _), do: nil



  def validate_result!(result, :loose, _)

      # when is_tuple(result) and tuple_size(result) >= 3 and elem(result, 0) in [:ok, :error] do

      when is_tuple(result) and elem(result, 0) in [:ok, :error] do

    nil

  end



  def validate_result!(result, :strict, label) do

    raise ArgumentError,

          "#{label} must be {:ok, _} / :ok / {:error, _} / :error, got: #{inspect(result)}"

  end



  def validate_result!(result, :loose, label) do

    raise ArgumentError,

          "#{label} must be {:ok, ...} / :ok / {:error, ...} / :error, got: #{inspect(result)}"

  end

end