Class: Date::Infinity

Inherits:
Numeric show all
Includes:
Comparable
Defined in:
opal/stdlib/date/infinity.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Numeric

#to_json, #to_n

Constructor Details

#initialize(d = 1) ⇒ Infinity

Returns a new instance of Infinity.



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# File 'opal/stdlib/date/infinity.rb', line 5

def initialize(d = 1)
  @d = d <=> 0
end

Instance Attribute Details

#d ⇒ Object (readonly)

Returns the value of attribute d.



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# File 'opal/stdlib/date/infinity.rb', line 9

def d
  @d
end

Instance Method Details

#+@ ⇒ Object 



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# File 'opal/stdlib/date/infinity.rb', line 35

def +@
  self.class.new(+d)
end

#-@ ⇒ Object 



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# File 'opal/stdlib/date/infinity.rb', line 31

def -@
  self.class.new(-d)
end

#<=>(other) ⇒ Object 



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# File 'opal/stdlib/date/infinity.rb', line 39

def <=>(other)
  case other
  when Infinity
    d <=> other.d
  when Numeric
    d
  else
    begin
      l, r = other.coerce(self)
      l <=> r
    rescue NoMethodError
      nil
    end
  end
end

#abs ⇒ Object 



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# File 'opal/stdlib/date/infinity.rb', line 27

def abs
  self.class.new
end

#coerce(other) ⇒ Object 



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# File 'opal/stdlib/date/infinity.rb', line 55

def coerce(other)
  case other
  when Numeric
    [-d, d]
  else
    super
  end
end

#finite? ⇒ Boolean

Returns:



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# File 'opal/stdlib/date/infinity.rb', line 15

def finite?
  false
end

#infinite? ⇒ Boolean

Returns:



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# File 'opal/stdlib/date/infinity.rb', line 19

def infinite?
  d.nonzero?
end

#nan? ⇒ Boolean

Returns:



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# File 'opal/stdlib/date/infinity.rb', line 23

def nan?
  d.zero?
end

#to_f ⇒ Object 



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# File 'opal/stdlib/date/infinity.rb', line 64

def to_f
  return 0 if @d == 0
  if @d > 0
    Float::INFINITY
  else
    -Float::INFINITY
  end
end

#zero? ⇒ Boolean

Returns:



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# File 'opal/stdlib/date/infinity.rb', line 11

def zero?
  false
end