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unicode_set

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Implementation of Unicode Sets and Regexes for Elixir that can be used in function guards, compiled patterns, nimble_parsec combinators and regexes.

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unicode_set lib set property.ex
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lib/set/property.ex 

defmodule Unicode.Set.Property do

  @moduledoc false



  def fetch_property(:script_or_category, value) do

    with return <- Unicode.Script.fetch(value),

         {:ok, range_list} <- maybe(return, value, &Unicode.Category.fetch/1) do

      {:ok, range_list}

    end

  end



  def fetch_property(property, value) do

    with {:ok, module} <- Unicode.fetch_property(property),

         {:ok, range_list} <- module.fetch(value) do

      {:ok, range_list}

    else

      :error ->

        {:error,

         "the unicode property #{inspect(property)} with value #{inspect(value)} is not known"}

    end

  end



  defp maybe({:ok, range_list}, _value, _fun) do

    {:ok, range_list}

  end



  defp maybe(:error, value, fun) do

    with {:ok, range_list} <- fun.(value) do

      {:ok, range_list}

    else

      _ -> {:error, "the unicode script or category #{inspect(value)} is not known"}

    end

  end

end