Class: EDTF::Interval

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Includes:
Enumerable
Defined in:
lib/edtf/interval.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(from = :open, to = :open) ⇒ Interval

Returns a new instance of Interval.



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# File 'lib/edtf/interval.rb', line 13

def initialize(from = :open, to = :open)
  @from, @to = from, to
end

Instance Attribute Details

#from ⇒ Object

Returns the value of attribute from.



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# File 'lib/edtf/interval.rb', line 11

def from
  @from
end

#to ⇒ Object

Returns the value of attribute to.



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# File 'lib/edtf/interval.rb', line 11

def to
  @to
end

Instance Method Details

#bounds ⇒ Object 



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# File 'lib/edtf/interval.rb', line 64

def bounds
  case
  when open_end?, to.day_precision? 
    to
  when to.month_precision?
    to.end_of_month
  else
    to.end_of_year
  end
end

#edtf ⇒ Object Also known as: to_s 



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# File 'lib/edtf/interval.rb', line 75

def edtf
	[
		@from.send(@from.respond_to?(:edtf) ? :edtf : :to_s),
		@to.send(@to.respond_to?(:edtf) ? :edtf : :to_s)
	].join('/')
end

#to_range ⇒ Object

TODO how to handle +/- Infinity for Dates?



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# File 'lib/edtf/interval.rb', line 53

def to_range
  case
  when open?
    nil
  when unknown_end?
    nil
  else
    Range.new(unknown_start? ? Date.new : @from, bounds)
  end
end

#unknown_start! ⇒ Object 



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# File 'lib/edtf/interval.rb', line 47

def unknown_start!
  @from = :unknown
end

#unknown_start? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/edtf/interval.rb', line 43

def unknown_start?
  @from == :unknown
end