класс ActiveSupport::TimeWithZone

# File activesupport/lib/active_support/time_with_zone.rb, line 251
def +(other)
  # If we're adding a Duration of variable length (i.e., years, months, days), move forward from #time,
  # otherwise move forward from #utc, for accuracy when moving across DST boundaries
  if duration_of_variable_length?(other)
    method_missing(:+, other)
  else
    result = utc.acts_like?(:date) ? utc.since(other) : utc + other rescue utc.since(other)
    result.in_time_zone(time_zone)
  end
end

# File activesupport/lib/active_support/time_with_zone.rb, line 262
def -(other)
  # If we're subtracting a Duration of variable length (i.e., years, months, days), move backwards from #time,
  # otherwise move backwards #utc, for accuracy when moving across DST boundaries
  if other.acts_like?(:time)
    to_time - other.to_time
  elsif duration_of_variable_length?(other)
    method_missing(:-, other)
  else
    result = utc.acts_like?(:date) ? utc.ago(other) : utc - other rescue utc.ago(other)
    result.in_time_zone(time_zone)
  end
end

# File activesupport/lib/active_support/time_with_zone.rb, line 217
def <=>(other)
  utc <=> other
end

# File activesupport/lib/active_support/time_with_zone.rb, line 341
def acts_like_time?
  true
end

# File activesupport/lib/active_support/time_with_zone.rb, line 290
def advance(options)
  # If we're advancing a value of variable length (i.e., years, weeks, months, days), advance from #time,
  # otherwise advance from #utc, for accuracy when moving across DST boundaries
  if options.values_at(:years, :weeks, :months, :days).any?
    method_missing(:advance, options)
  else
    utc.advance(options).in_time_zone(time_zone)
  end
end

# File activesupport/lib/active_support/time_with_zone.rb, line 286
def ago(other)
  since(-other)
end

# File activesupport/lib/active_support/time_with_zone.rb, line 156
def as_json(options = nil)
  if ActiveSupport::JSON::Encoding.use_standard_json_time_format
    xmlschema(ActiveSupport::JSON::Encoding.time_precision)
  else
    %Q(#{time.strftime("%Y/%m/%d %H:%M:%S")} #{formatted_offset(false)})
  end
end

# File activesupport/lib/active_support/time_with_zone.rb, line 223
def between?(min, max)
  utc.between?(min, max)
end

# File activesupport/lib/active_support/time_with_zone.rb, line 90
def dst?
  period.dst?
end

# File activesupport/lib/active_support/time_with_zone.rb, line 243
def eql?(other)
  other.eql?(utc)
end

# File activesupport/lib/active_support/time_with_zone.rb, line 121
def formatted_offset(colon = true, alternate_utc_string = nil)
  utc? && alternate_utc_string || TimeZone.seconds_to_utc_offset(utc_offset, colon)
end

# File activesupport/lib/active_support/time_with_zone.rb, line 351
def freeze
  # preload instance variables before freezing
  period; utc; time; to_datetime; to_time
  super
end

# File activesupport/lib/active_support/time_with_zone.rb, line 239
def future?
  utc.future?
end

# File activesupport/lib/active_support/time_with_zone.rb, line 247
def hash
  utc.hash
end

# File activesupport/lib/active_support/time_with_zone.rb, line 180
def httpdate
  utc.httpdate
end

# File activesupport/lib/active_support/time_with_zone.rb, line 73
def in_time_zone(new_zone = ::Time.zone)
  return self if time_zone == new_zone
  utc.in_time_zone(new_zone)
end

# File activesupport/lib/active_support/time_with_zone.rb, line 131
def inspect
  "#{time.strftime('%a, %d %b %Y %H:%M:%S')} #{zone} #{formatted_offset}"
end

# File activesupport/lib/active_support/time_with_zone.rb, line 346
def is_a?(klass)
  klass == ::Time || super
end

# File activesupport/lib/active_support/time_with_zone.rb, line 79
def localtime(utc_offset = nil)
  utc.getlocal(utc_offset)
end

# File activesupport/lib/active_support/time_with_zone.rb, line 357
def marshal_dump
  [utc, time_zone.name, time]
end

# File activesupport/lib/active_support/time_with_zone.rb, line 361
def marshal_load(variables)
  initialize(variables[0].utc, ::Time.find_zone(variables[1]), variables[2].utc)
end

# File activesupport/lib/active_support/time_with_zone.rb, line 382
def method_missing(sym, *args, &block)
  wrap_with_time_zone time.__send__(sym, *args, &block)
rescue NoMethodError => e
  raise e, e.message.sub(time.inspect, self.inspect), e.backtrace
end

# File activesupport/lib/active_support/time_with_zone.rb, line 228
def past?
  utc.past?
end

# File activesupport/lib/active_support/time_with_zone.rb, line 68
def period
  @period ||= time_zone.period_for_utc(@utc)
end

# File activesupport/lib/active_support/time_with_zone.rb, line 367
def respond_to?(sym, include_priv = false)
  # ensure that we're not going to throw and rescue from NoMethodError in method_missing which is slow
  return false if sym.to_sym == :to_str
  super
end

# File activesupport/lib/active_support/time_with_zone.rb, line 375
def respond_to_missing?(sym, include_priv)
  return false if sym.to_sym == :acts_like_date?
  time.respond_to?(sym, include_priv)
end

# File activesupport/lib/active_support/time_with_zone.rb, line 188
def rfc2822
  to_s(:rfc822)
end

# File activesupport/lib/active_support/time_with_zone.rb, line 275
def since(other)
  # If we're adding a Duration of variable length (i.e., years, months, days), move forward from #time,
  # otherwise move forward from #utc, for accuracy when moving across DST boundaries
  if duration_of_variable_length?(other)
    method_missing(:since, other)
  else
    utc.since(other).in_time_zone(time_zone)
  end
end

# File activesupport/lib/active_support/time_with_zone.rb, line 211
def strftime(format)
  format = format.gsub(/((?:\A|[^%])(?:%%)*)%Z/, "\\1#{zone}")
  getlocal(utc_offset).strftime(format)
end

# File activesupport/lib/active_support/time_with_zone.rb, line 54
def time
  @time ||= period.to_local(@utc)
end

# File activesupport/lib/active_support/time_with_zone.rb, line 308
def to_a
  [time.sec, time.min, time.hour, time.day, time.mon, time.year, time.wday, time.yday, dst?, zone]
end

# File activesupport/lib/active_support/time_with_zone.rb, line 325
def to_datetime
  @to_datetime ||= utc.to_datetime.new_offset(Rational(utc_offset, 86_400))
end

# File activesupport/lib/active_support/time_with_zone.rb, line 312
def to_f
  utc.to_f
end

# File activesupport/lib/active_support/time_with_zone.rb, line 316
def to_i
  utc.to_i
end

# File activesupport/lib/active_support/time_with_zone.rb, line 321
def to_r
  utc.to_r
end

# File activesupport/lib/active_support/time_with_zone.rb, line 198
def to_s(format = :default)
  if format == :db
    utc.to_s(format)
  elsif formatter = ::Time::DATE_FORMATS[format]
    formatter.respond_to?(:call) ? formatter.call(self).to_s : strftime(formatter)
  else
    "#{time.strftime("%Y-%m-%d %H:%M:%S")} #{formatted_offset(false, 'UTC')}" # mimicking Ruby 1.9 Time#to_s format
  end
end

# File activesupport/lib/active_support/time_with_zone.rb, line 332
def to_time
  if preserve_timezone
    @to_time_with_instance_offset ||= getlocal(utc_offset)
  else
    @to_time_with_system_offset ||= getlocal
  end
end

# File activesupport/lib/active_support/time_with_zone.rb, line 234
def today?
  time.today?
end

# File activesupport/lib/active_support/time_with_zone.rb, line 59
def utc
  @utc ||= period.to_utc(@time)
end

# File activesupport/lib/active_support/time_with_zone.rb, line 101
def utc?
  time_zone.name == 'UTC'
end

# File activesupport/lib/active_support/time_with_zone.rb, line 107
def utc_offset
  period.utc_total_offset
end

# File activesupport/lib/active_support/time_with_zone.rb, line 135
def xmlschema(fraction_digits = 0)
  fraction = if fraction_digits.to_i > 0
    (".%06i" % time.usec)[0, fraction_digits.to_i + 1]
  end

  "#{time.strftime("%Y-%m-%dT%H:%M:%S")}#{fraction}#{formatted_offset(true, 'Z')}"
end

# File activesupport/lib/active_support/time_with_zone.rb, line 127
def zone
  period.zone_identifier.to_s
end