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localize

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Localization (parsing, formatting) of numbers, dates/time/calendar, units of measure, messages and lists. Includes localized collation.

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localize lib localize backend.ex
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lib/localize/backend.ex 

defmodule Localize.Backend do

  @moduledoc false



  # Resolves the `:backend` option to either `:nif` or `:elixir`.

  #

  # Rules:

  # * If `:backend` is `:nif` and the NIF is available, returns `:nif`.

  # * If `:backend` is `:nif` and the NIF is NOT available, returns `:elixir`.

  # * If `:backend` is `:elixir`, returns `:elixir`.

  # * If `:backend` is anything else or not set, returns `:elixir`.



  @spec resolve(Keyword.t()) :: :nif | :elixir

  def resolve(options) when is_list(options) do

    case Keyword.get(options, :backend) do

      :nif -> if nif_available?(), do: :nif, else: :elixir

      _ -> :elixir

    end

  end



  @spec resolve(map()) :: :nif | :elixir

  def resolve(options) when is_map(options) do

    case Map.get(options, :backend) do

      :nif -> if nif_available?(), do: :nif, else: :elixir

      _ -> :elixir

    end

  end



  defp nif_available? do

    Localize.Nif.available?()

  end

end