123456789_123456789_123456789_123456789_123456789_

Class: TZInfo::DayOfMonthTransitionRule Private

Do not use. This class is for internal use only.
Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, DayOfWeekTransitionRule, TransitionRule
Instance Chain:
self, DayOfWeekTransitionRule, TransitionRule
Inherits: TZInfo::DayOfWeekTransitionRule
Defined in: lib/tzinfo/transition_rule.rb

Overview

A rule that transitions on the nth occurrence of a particular day of week of a calendar month.

Class Method Summary

DayOfWeekTransitionRule - Inherited

.new

Initializes a new DayOfWeekTransitionRule.

TransitionRule - Inherited

.new

Initializes a new TransitionRule.

Instance Attribute Summary

DayOfWeekTransitionRule - Inherited

#is_always_first_day_of_year?, #is_always_last_day_of_year?, #day_of_week, #month

TransitionRule - Inherited

#transition_at

Returns the number of seconds after midnight local time on the day identified by the rule at which the transition occurs.

Instance Method Summary

DayOfWeekTransitionRule - Inherited

#==

Determines if this DayOfWeekTransitionRule is equal to another instance.
#eql?

Alias for DayOfWeekTransitionRule#==.
#hash_args

TransitionRule - Inherited

#==

Determines if this TransitionRule is equal to another instance.
#at

Calculates the time of the transition from a given offset on a given year.
#eql?

Alias for TransitionRule#==.
#hash, #hash_args

Instance Attribute Details

#offset_start ⇒ Integer (readonly, protected)

Returns:

  • (Integer) —

    the day the week starts on for a month starting on a Sunday.

[ GitHub ] 

  


# File 'lib/tzinfo/transition_rule.rb', line 362



attr_reader :offset_start


  







Instance Method Details



  

    #==(r)  ⇒ Boolean 
    Also known as: #eql?
  



  

    
Determines if this DayOfMonthTransitionRule is equal to another
instance.


  





  
Parameters:


    
  
  • 
    r
    (Object)
—    
    the instance to test for equality.
    

    
  
    • 



Returns:


    
  
  • 
    (Boolean)
—    
    true if r is a DayOfMonthTransitionRule with the
same transition_at, month, week and day of week as this
DayOfMonthTransitionRule, otherwise false.
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/tzinfo/transition_rule.rb', line 353



def ==(r)
  super(r) && r.kind_of?(DayOfMonthTransitionRule) && @offset_start == r.offset_start
end


  








  

    #eql?(r)  
  



  

    
Alias for #==.


  



  [ GitHub ]


  

  


# File 'lib/tzinfo/transition_rule.rb', line 356



alias eql? ==


  








  

    #get_day(offset, year)  ⇒ Time  (protected)
  



  

    
Returns a Time representing midnight local time on the day specified by
the rule for the given offset and year.


  





  
Parameters:


    
  
  • 
    offset
    (TimezoneOffset)
—    
    the current offset at the time of the
transition.
    

    
  
    • 
  
  • 
    year
    (Integer)
—    
    the year in which the transition occurs.
    

    
  
    • 



Returns:


    
  
  • 
    (Time)
—    
    midnight local time on the day specified by the rule for
the given offset and year.
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/tzinfo/transition_rule.rb', line 372



def get_day(offset, year)
  candidate = Time.new(year, month, @offset_start, 0, 0, 0, offset.observed_utc_offset)
  diff = day_of_week - candidate.wday

  if diff < 0
    candidate + (7 + diff) * 86400
  elsif diff > 0
    candidate + diff * 86400
  else
    candidate
  end
end


  








  

    #hash_args  ⇒ Array  (protected)
  



  

    
  





  
Returns:


    
  
  • 
    (Array)
—    
    an Array of parameters that will influence the output of
hash.
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/tzinfo/transition_rule.rb', line 386



def hash_args
  [@offset_start] + super
end