Class: Derketo::EventTrace

Inherits:
Object
  • Object
show all
Defined in:
lib/derketo/event_trace.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ EventTrace

Returns a new instance of EventTrace.



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# File 'lib/derketo/event_trace.rb', line 4

def initialize
  @first = nil
  @last = nil
  @length = 0
end

Instance Attribute Details

#first ⇒ Object

Returns the value of attribute first.



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# File 'lib/derketo/event_trace.rb', line 3

def first
  @first
end

#last ⇒ Object

Returns the value of attribute last.



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# File 'lib/derketo/event_trace.rb', line 3

def last
  @last
end

#length ⇒ Object

Returns the value of attribute length.



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# File 'lib/derketo/event_trace.rb', line 3

def length
  @length
end

Instance Method Details

#all ⇒ Object 



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# File 'lib/derketo/event_trace.rb', line 21

def all
  @_events = []
  event = @first
  while event.nil? == false
    @_events << event
    event = event.next
  end
  @_events
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/derketo/event_trace.rb', line 31

def empty?
  @length == 0
end

#push(event) ⇒ Object 



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# File 'lib/derketo/event_trace.rb', line 10

def push(event)
  if @first.nil?
    @first = event
  else
    event.previous = @last
    @last.next = event
  end
  @last = event
  @length += 1
end