Class: Rypper::Counter

Inherits:
Object
  • Object
show all
Defined in:
lib/rypper/counter.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(match, lower, upper, digits = 1, state = nil) ⇒ Counter

Returns a new instance of Counter.



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# File 'lib/rypper/counter.rb', line 11

def initialize(match, lower, upper, digits=1, state=nil)
  @match = match
  @lower = lower
  @upper = upper
  @digits = digits
  @state = state || @lower
end

Instance Attribute Details

#digits ⇒ Object (readonly)

Returns the value of attribute digits.



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# File 'lib/rypper/counter.rb', line 8

def digits
  @digits
end

#lower ⇒ Object (readonly)

Returns the value of attribute lower.



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# File 'lib/rypper/counter.rb', line 6

def lower
  @lower
end

#match ⇒ Object (readonly)

Returns the value of attribute match.



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# File 'lib/rypper/counter.rb', line 5

def match
  @match
end

#state ⇒ Object (readonly)

Returns the value of attribute state.



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# File 'lib/rypper/counter.rb', line 9

def state
  @state
end

#upper ⇒ Object (readonly)

Returns the value of attribute upper.



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# File 'lib/rypper/counter.rb', line 7

def upper
  @upper
end

Instance Method Details

#first! ⇒ Object 



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# File 'lib/rypper/counter.rb', line 19

def first!
  @state = @lower
  self
end

#first? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rypper/counter.rb', line 24

def first?
  @state == @lower
end

#last! ⇒ Object 



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# File 'lib/rypper/counter.rb', line 46

def last!
  @state = @upper
  self
end

#last? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rypper/counter.rb', line 51

def last?
  @state == @upper
end

#next! ⇒ Object 



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# File 'lib/rypper/counter.rb', line 37

def next!
  if @state < @upper
    @state += 1
  else
    @state = @lower
  end
  self
end

#prev! ⇒ Object 



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# File 'lib/rypper/counter.rb', line 28

def prev!
  if @state > @lower
    @state -= 1
  else
    @state = @upper
  end
  self
end

#to_s(digits = nil) ⇒ Object 



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# File 'lib/rypper/counter.rb', line 55

def to_s(digits=nil)
  digits ||= self.digits
  @state.to_s.rjust(digits, '0')
end