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dogma lib dogma rule module_attribute_name.ex
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lib/dogma/rule/module_attribute_name.ex 

use Dogma.RuleBuilder



defrule Dogma.Rule.ModuleAttributeName do

  @moduledoc """

  A rule that disallows module attribute names not in snake_case

  """



  alias Dogma.Util.Name



  def test(_rule, script) do

    script |> Script.walk( &check_ast(&1, &2) )

  end



  defp check_ast({:@, meta, [{name, _, _}]} = ast, errors) do

    errors = if name |> to_string |> Name.not_snake_case? do

      [error( meta[:line] ) | errors]

    else

      errors

    end

    {ast, errors}

  end

  defp check_ast(ast, errors) do

    {ast, errors}

  end





  defp error(pos) do

    %Error{

      rule:     __MODULE__,

      message:  "Module attribute names should be in snake_case",

      line: Dogma.Script.line(pos),

    }

  end

end