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reach lib reach check smells.ex
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lib/reach/check/smells.ex 

defmodule Reach.Check.Smells do

  @moduledoc """

  Runs structural and performance smell checks over a loaded project.

  """



  alias Reach.{Config, Plugin}

  alias Reach.Smell.{DSLGuard, Registry, SourceRunner, Suppressions}



  def run(project, config \\ []) do

    config = Config.normalize(config)



    {pattern_checks, checks} =

      Enum.split_with(Reach.Smell.Registry.checks(project, config), &pattern_check?/1)



    findings =

      SourceRunner.run(project, pattern_checks) ++

        Enum.flat_map(checks, &run_check(&1, project, config))



    plugin_checks = project |> Map.get(:plugins, []) |> Plugin.smell_checks() |> MapSet.new()



    plugin_kinds =

      (pattern_checks ++ checks)

      |> Enum.filter(&MapSet.member?(plugin_checks, &1))

      |> Enum.flat_map(&Registry.kinds/1)

      |> MapSet.new()



    findings

    |> DSLGuard.filter(project, config, plugin_kinds)

    |> Suppressions.filter(project, config)

  end



  def analyze(project), do: run(project)



  defp pattern_check?(check) do

    Code.ensure_loaded?(check) and function_exported?(check, :__reach_pattern_check__, 0)

  end



  defp run_check(check, project, config) do

    if function_exported?(check, :run, 2),

      do: check.run(project, config),

      else: check.run(project)

  end

end