Class: InfiniteTime

Inherits:
Time
  • Object
show all
Defined in:
lib/infinite_time.rb,
lib/infinite_time/version.rb,
lib/infinite_time/time_extension.rb,
lib/infinite_time/time_compatability.rb

Defined Under Namespace

Modules: TimeExtension Classes: InvalidSign

Constant Summary collapse

VERSION = 
'0.0.2'

Constants inherited from Time

Time::Infinity

Instance Method Summary collapse

Methods included from TimeExtension

#infinite?

Constructor Details

#initialize(sign = :+) ⇒ InfiniteTime

Returns a new instance of InfiniteTime.

Raises:



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# File 'lib/infinite_time.rb', line 17

def initialize sign = :+
  sign = sign.to_sym
  raise InvalidSign unless [:+, :-].include? sign
  @sign = sign
end

Instance Method Details

#+(_) ⇒ Object 



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# File 'lib/infinite_time.rb', line 46

def + _; self; end

#-(_) ⇒ Object 



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# File 'lib/infinite_time.rb', line 47

def - _; self; end

#<=>(other) ⇒ Object 



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# File 'lib/infinite_time.rb', line 31

def <=> other
  case other
  when InfiniteTime
    if positive? && other.negative?
      1
    elsif negative? && other.positive?
      -1
    else
      0
    end
  when Time then (positive?) ? 1 : -1
  else raise ArgumentError, "comparison of InfiniteTime with #{other.inspect} failed"
  end
end

#hash ⇒ Object 



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# File 'lib/infinite_time.rb', line 49

def hash
  self.class.hash ^ @sign.hash
end

#negative? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/infinite_time.rb', line 27

def negative?
  !positive?
end

#positive? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/infinite_time.rb', line 23

def positive?
  @sign == :+
end

#strftime(_) ⇒ Object 



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# File 'lib/infinite_time.rb', line 67

def strftime _; to_s; end

#to_f ⇒ Object 



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# File 'lib/infinite_time.rb', line 53

def to_f
  (positive?) ? Float::INFINITY : -Float::INFINITY
end

#to_i ⇒ Object

Raises:

  • (TypeError) 


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# File 'lib/infinite_time.rb', line 57

def to_i; raise TypeError, 'InfiniteTime has no Integer representation'; end

#to_r ⇒ Object

Raises:

  • (TypeError) 


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# File 'lib/infinite_time.rb', line 58

def to_r; raise TypeError, 'InfiniteTime has no Rational representation'; end

#to_s ⇒ Object Also known as: asctime, ctime, inspect 



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# File 'lib/infinite_time.rb', line 60

def to_s
  "#{@sign}∞"
end