get_constant_with_optional_parens

# File lib/rdoc/parser/ruby.rb, line 419
  def get_constant_with_optional_parens
    skip_tkspace false

    nest = 0

    while TkLPAREN === (tk = peek_tk) or TkfLPAREN === tk do
      get_tk
      skip_tkspace
      nest += 1
    end

    name = get_constant

    while nest > 0
      skip_tkspace
      tk = get_tk
      nest -= 1 if TkRPAREN === tk
    end

    name
  end