module RDoc::RubyToken

def Token(token, value = nil)
  value ||= TkToken2Reading[token]
  case token
  when String
    if (tk = TkReading2Token[token]).nil?
      IRB.fail TkReading2TokenNoKey, token
    end
    tk = Token(tk[0], value)
    if tk.kind_of?(TkOp) then
      tk.name = token
    end
  when Symbol
    if (tk = TkSymbol2Token[token]).nil?
      IRB.fail TkSymbol2TokenNoKey, token
    end
    tk = Token(tk[0], value)
  else
    if token.instance_method(:initialize).arity == 3 then
      tk = token.new(@prev_seek, @prev_line_no, @prev_char_no)
      tk.set_text value
    else
      tk = token.new(@prev_seek, @prev_line_no, @prev_char_no, value)
    end
  end
  tk
end