class Chronic::RepeaterTime

def next(pointer)
  super
  half_day = 60 * 60 * 12
  full_day = 60 * 60 * 24
  first = false
  unless @current_time
    first = true
    midnight = Chronic.time_class.local(@now.year, @now.month, @now.day)
    yesterday_midnight = midnight - full_day
    tomorrow_midnight = midnight + full_day
    offset_fix = midnight.gmt_offset - tomorrow_midnight.gmt_offset
    tomorrow_midnight += offset_fix
    catch :done do
      if pointer == :future
        if @type.ambiguous?
          [midnight + @type.time + offset_fix, midnight + half_day + @type.time + offset_fix, tomorrow_midnight + @type.time].each do |t|
            (@current_time = t; throw :done) if t >= @now
          end
        else
          [midnight + @type.time + offset_fix, tomorrow_midnight + @type.time].each do |t|
            (@current_time = t; throw :done) if t >= @now
          end
        end
      else # pointer == :past
        if @type.ambiguous?
          [midnight + half_day + @type.time + offset_fix, midnight + @type.time + offset_fix, yesterday_midnight + @type.time + half_day].each do |t|
            (@current_time = t; throw :done) if t <= @now
          end
        else
          [midnight + @type.time + offset_fix, yesterday_midnight + @type.time].each do |t|
            (@current_time = t; throw :done) if t <= @now
          end
        end
      end
    end
    @current_time || raise("Current time cannot be nil at this point")
  end
  unless first
    increment = @type.ambiguous? ? half_day : full_day
    @current_time += pointer == :future ? increment : -increment
  end
  Span.new(@current_time, @current_time + width)
end