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reach lib reach ir helpers.ex
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lib/reach/ir/helpers.ex 

defmodule Reach.IR.Helpers do

  @moduledoc false



  alias Reach.IR.Node



  def mark_as_definitions(%Node{type: :var, meta: meta} = node) do

    %{node | meta: Map.put(meta, :binding_role, :definition)}

  end



  def mark_as_definitions(%Node{children: children} = node) do

    %{node | children: Enum.map(children, &mark_as_definitions/1)}

  end



  def mark_as_definitions(other), do: other



  def param_var_name(%Node{type: :var, meta: %{name: name}}), do: name

  def param_var_name(_), do: nil



  def var_used_in_subtree?(%Node{type: :var, meta: %{name: name}}, target), do: name == target



  def var_used_in_subtree?(%Node{children: children}, target) do

    Enum.any?(children, &var_used_in_subtree?(&1, target))

  end



  def language_from_path(path) do

    case Path.extname(path) do

      ext when ext in [".erl", ".hrl"] -> :erlang

      ".gleam" -> :gleam

      _ -> :elixir

    end

  end



  def module_from_path(path) do

    path

    |> Path.rootname()

    |> Path.split()

    |> Enum.drop_while(&(&1 != "lib" and &1 != "src"))

    |> Enum.drop(1)

    |> Enum.map_join(".", &Macro.camelize/1)

    |> then(fn

      "" -> nil

      name -> Module.concat([name])

    end)

  end

end