class EventStreamParser::Parser

def process_field(field, value)
  ##
  # The steps to process the field given a field name and a field value depend
  # on the field name, as given in the following list. Field names must be
  # compared literally, with no case folding performed.
  #
  case field
  ##
  # If the field name is "event"
  #
  when 'event'
    ##
    # Set the event type buffer to field value.
    #
    @event_type_buffer = value
  ##
  # If the field name is "data"
  #
  when 'data'
    ##
    # Append the field value to the data buffer, then append a single U+000A
    # LINE FEED (LF) character to the data buffer.
    #
    @data_buffer << value << "\n"
  ##
  # If the field name is "id"
  #
  when 'id'
    ##
    # If the field value does not contain U+0000 NULL, then set the last event
    # ID buffer to the field value. Otherwise, ignore the field.
    #
    @last_event_id_buffer = value unless value.include?("\u0000")
  ##
  # If the field name is "retry"
  #
  when 'retry'
    ##
    # If the field value consists of only ASCII digits, then interpret the
    # field value as an integer in base ten, and set the event stream's
    # reconnection time to that integer. Otherwise, ignore the field.
    #
    @reconnection_time = value.to_i if /\A\d+\z/.match?(value)
  ##
  # Otherwise
  #
  else
    ##
    # The field is ignored.
    #
    ignore
  end
end