Class: TimeInterval::TimeWithDuration

Inherits:
Object
  • Object
show all
Defined in:
lib/time_interval/time_with_duration.rb

Constant Summary collapse

UNITS = 
%w(years months weeks days hours minutes seconds).freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(time, duration, forwards = true) ⇒ TimeWithDuration

Returns a new instance of TimeWithDuration.



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# File 'lib/time_interval/time_with_duration.rb', line 28

def initialize(time, duration, forwards = true)
  @start_time = time
  @duration = duration
  @forwards = forwards
end

Instance Attribute Details

#duration ⇒ Object (readonly)

Returns the value of attribute duration.



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# File 'lib/time_interval/time_with_duration.rb', line 26

def duration
  @duration
end

#start_time ⇒ Object (readonly)

Returns the value of attribute start_time.



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# File 'lib/time_interval/time_with_duration.rb', line 25

def start_time
  @start_time
end

Class Method Details

.parse(iso8601) ⇒ Object 



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# File 'lib/time_interval/time_with_duration.rb', line 5

def self.parse(iso8601)
  halves = iso8601.split('/')

  fail ArgumentError unless halves.length == 2

  if halves[0]['P']
    forwards = false
    duration = Duration.parse(halves[0])
    time = halves[1]
  elsif halves[1]['P']
    forwards = true
    duration = Duration.parse(halves[1])
    time = halves[0]
  else
    fail ArgumentError
  end

  new Time.parse(time), duration, forwards
end

Instance Method Details

#==(other) ⇒ Object Also known as: eql? 



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# File 'lib/time_interval/time_with_duration.rb', line 34

def ==(other)
  return false unless other.is_a? TimeWithDuration

  start_time == other.start_time && end_time == other.end_time
end

#end_time ⇒ Object 



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# File 'lib/time_interval/time_with_duration.rb', line 42

def end_time
  if forwards?
    duration.add_to start_time
  else
    duration.subtract_from start_time
  end
end

#iso8601 ⇒ Object 



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# File 'lib/time_interval/time_with_duration.rb', line 50

def iso8601
  if forwards?
    "#{start_time.iso8601}/#{duration.iso8601}"
  else
    "#{duration.iso8601}/#{start_time.iso8601}"
  end
end

#step ⇒ Object 



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# File 'lib/time_interval/time_with_duration.rb', line 58

def step
  TimeWithDuration.new end_time, duration, forwards?
end