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Name	Size	Permission
country.rb	6.1 KB	-rw-r--r--
country_index_definition.rb	962 B	-rw-r--r--
country_info.rb	1.14 KB	-rw-r--r--
country_timezone.rb	5 KB	-rw-r--r--
data_source.rb	6.94 KB	-rw-r--r--
data_timezone.rb	2.14 KB	-rw-r--r--
data_timezone_info.rb	2.01 KB	-rw-r--r--
info_timezone.rb	571 B	-rw-r--r--
linked_timezone.rb	2.36 KB	-rw-r--r--
linked_timezone_info.rb	835 B	-rw-r--r--
offset_rationals.rb	3.64 KB	-rw-r--r--
ruby_core_support.rb	4.57 KB	-rw-r--r--
ruby_country_info.rb	2.44 KB	-rw-r--r--
ruby_data_source.rb	4.15 KB	-rw-r--r--
time_or_datetime.rb	10.46 KB	-rw-r--r--
timezone.rb	24.99 KB	-rw-r--r--
timezone_definition.rb	981 B	-rw-r--r--
timezone_index_definition.rb	1.6 KB	-rw-r--r--
timezone_info.rb	747 B	-rw-r--r--
timezone_offset.rb	3.72 KB	-rw-r--r--
timezone_period.rb	8.76 KB	-rw-r--r--
timezone_proxy.rb	3.7 KB	-rw-r--r--
timezone_transition.rb	4.28 KB	-rw-r--r--
timezone_transition_definition...	3.76 KB	-rw-r--r--
transition_data_timezone_info....	9.67 KB	-rw-r--r--
zoneinfo_country_info.rb	1.19 KB	-rw-r--r--
zoneinfo_data_source.rb	19.12 KB	-rw-r--r--
zoneinfo_timezone_info.rb	11.09 KB	-rw-r--r--

Code Editor : timezone_transition.rb

module TZInfo
  # Represents a transition from one timezone offset to another at a particular
  # date and time.
  class TimezoneTransition
    # The offset this transition changes to (a TimezoneOffset instance).
    attr_reader :offset
    
    # The offset this transition changes from (a TimezoneOffset instance).
    attr_reader :previous_offset
    
    # Initializes a new TimezoneTransition.
    #
    # TimezoneTransition instances should not normally be constructed manually.
    def initialize(offset, previous_offset)
      @offset = offset
      @previous_offset = previous_offset
      @local_end_at = nil
      @local_start_at = nil
    end
    
    # A TimeOrDateTime instance representing the UTC time when this transition
    # occurs.
    def at
      raise_not_implemented('at')
    end
    
    # The UTC time when this transition occurs, returned as a DateTime instance.
    def datetime
      at.to_datetime
    end
    
    # The UTC time when this transition occurs, returned as a Time instance.
    def time
      at.to_time
    end
    
    # A TimeOrDateTime instance representing the local time when this transition
    # causes the previous observance to end (calculated from at using 
    # previous_offset).
    def local_end_at
      # Thread-safety: It is possible that the value of @local_end_at may be
      # calculated multiple times in concurrently executing threads. It is not 
      # worth the overhead of locking to ensure that @local_end_at is only
      # calculated once.
    
      unless @local_end_at
        result = at.add_with_convert(@previous_offset.utc_total_offset)
        return result if frozen?
        @local_end_at = result
      end

@local_end_at
    end
    
    # The local time when this transition causes the previous observance to end,
    # returned as a DateTime instance.
    def local_end
      local_end_at.to_datetime
    end
    
    # The local time when this transition causes the previous observance to end,
    # returned as a Time instance.
    def local_end_time
      local_end_at.to_time
    end
    
    # A TimeOrDateTime instance representing the local time when this transition
    # causes the next observance to start (calculated from at using offset).
    def local_start_at
      # Thread-safety: It is possible that the value of @local_start_at may be
      # calculated multiple times in concurrently executing threads. It is not 
      # worth the overhead of locking to ensure that @local_start_at is only
      # calculated once.
    
      unless @local_start_at
        result = at.add_with_convert(@offset.utc_total_offset)
        return result if frozen?
        @local_start_at = result
      end

@local_start_at
    end
    
    # The local time when this transition causes the next observance to start,
    # returned as a DateTime instance.
    def local_start
      local_start_at.to_datetime
    end
    
    # The local time when this transition causes the next observance to start,
    # returned as a Time instance.
    def local_start_time
      local_start_at.to_time
    end
    
    # Returns true if this TimezoneTransition is equal to the given
    # TimezoneTransition. Two TimezoneTransition instances are 
    # considered to be equal by == if offset, previous_offset and at are all 
    # equal.
    def ==(tti)
      tti.kind_of?(TimezoneTransition) &&
        offset == tti.offset && previous_offset == tti.previous_offset && at == tti.at
    end
    
    # Returns true if this TimezoneTransition is equal to the given
    # TimezoneTransition. Two TimezoneTransition instances are 
    # considered to be equal by eql? if offset, previous_offset and at are all
    # equal and the type used to define at in both instances is the same.
    def eql?(tti)
      tti.kind_of?(TimezoneTransition) &&
        offset == tti.offset && previous_offset == tti.previous_offset && at.eql?(tti.at)
    end
    
    # Returns a hash of this TimezoneTransition instance.
    def hash
      @offset.hash ^ @previous_offset.hash ^ at.hash
    end
    
    # Returns internal object state as a programmer-readable string.
    def inspect
      "#<#{self.class}: #{at.inspect},#{@offset.inspect}>"      
    end

private

def raise_not_implemented(method_name)
      raise NotImplementedError, "Subclasses must override #{method_name}"
    end
  end
end

${this.title}

Code Editor : timezone_transition.rb