class ActiveRecord::ConnectionAdapters::PostgreSQL::OID::Range

def extract_bounds(value)
  from, to = value[1..-2].split(",", 2)
  {
    from:          (from == "" || from == "-infinity") ? infinity(negative: true) : unquote(from),
    to:            (to == "" || to == "infinity") ? infinity : unquote(to),
    exclude_start: value.start_with?("("),
    exclude_end:   value.end_with?(")")
  }
end