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dogma

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dogma lib dogma rules line_length.ex
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lib/dogma/rules/line_length.ex 

defmodule Dogma.Rules.LineLength do

  @moduledoc """

  A rule that disallows lines longer than 80 columns in length.

  """



  @behaviour Dogma.Rule



  alias Dogma.Error



  def test(script) do

    test(script, max_length: 80)

  end



  def test(script, max_length: max) do

    script.lines

    |> Enum.filter(&longer_than(&1, max))

    |> Enum.map(&error/1)

  end





  defp longer_than({_, line}, max) do

    String.length(line) > max

  end



  defp error({line_num, _}) do

    %Error{

      rule:     __MODULE__,

      message:  "Line too long",

      position: line_num,

    }

  end

end