Class: MudratProjector::DateDiff::QuarterCalculator

Inherits:
ComplexCalculator show all
Defined in:
lib/mudrat_projector/date_diff.rb

Instance Attribute Summary

Attributes inherited from ComplexCalculator

#first_unit

Attributes inherited from Calculator

#from, #to

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from ComplexCalculator

#calculate, #initialize

Methods inherited from Calculator

#calculate, #to_big_decimal

Constructor Details

This class inherits a constructor from MudratProjector::DateDiff::ComplexCalculator

Class Method Details

.advance(intervals, from: from) ⇒ Object 



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# File 'lib/mudrat_projector/date_diff.rb', line 154

def self.advance intervals, from: from
  (intervals * 3).times.inject from do |date, _| date.next_month; end
end

Instance Method Details

#advance_one_unit(date) ⇒ Object 



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# File 'lib/mudrat_projector/date_diff.rb', line 146

def advance_one_unit date
  date.next_month.next_month.next_month
end

#fetch_unit(date) ⇒ Object 



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# File 'lib/mudrat_projector/date_diff.rb', line 136

def fetch_unit date
  [1, 4, 7, 10].each do |quarter|
    if (quarter..quarter + 2).include? date.month
      start_of_quarter = Date.new(date.year, quarter)
      return (start_of_quarter..(start_of_quarter.next_month.next_month.next_month - 1))
    end
  end
  fail "Date month was #{date.month}"
end

#rewind_one_unit(date) ⇒ Object 



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# File 'lib/mudrat_projector/date_diff.rb', line 150

def rewind_one_unit date
  date.prev_month.prev_month.prev_month
end