defmodule Makeup.Lexers.RustLexer.Helper do
  @moduledoc """
  Helper functions to easily deal with Rust tokens
  """

  import NimbleParsec

  def with_optional_separator(combinator, separator) when is_binary(separator) do
    combinator |> repeat(string(separator) |> concat(combinator))
  end

  def prepend(list, string_to_prepend) do
    string_to_prepend |> string() |> concat(list)
  end
end