Class: Puppet::Pops::Types::IntegerRangeIterator Private

Inherits:
Iterator show all
Includes:
Enumerable
Defined in:
lib/puppet/pops/types/iterable.rb

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Instance Method Summary collapse

Methods included from Enumerable

#uniq

Methods inherited from Iterator

#method_missing, #respond_to_missing?, #step, #to_s

Methods included from Iterable

asserted_iterable, #each, #hash_style?, on, #step, #to_a, unbounded?

Constructor Details

#initialize(range, step = 1) ⇒ IntegerRangeIterator

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of IntegerRangeIterator

Raises:

  • (ArgumentError) 

288
289
290
291
292
293
 
# File 'lib/puppet/pops/types/iterable.rb', line 288

def initialize(range, step = 1)
  raise ArgumentError if step == 0
  @range = range
  @step_size = step
  @current = (step < 0 ? range.to : range.from) - step
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Puppet::Pops::Types::Iterator

Instance Method Details

#element_type ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


295
296
297
 
# File 'lib/puppet/pops/types/iterable.rb', line 295

def element_type
  @range
end

#next ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


299
300
301
302
303
304
305
306
307
 
# File 'lib/puppet/pops/types/iterable.rb', line 299

def next
  value = @current + @step_size
  if @step_size < 0
    raise StopIteration if value < @range.from
  else
    raise StopIteration if value > @range.to
  end
  @current = value
end

#reverse_each(&block) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


309
310
311
312
 
# File 'lib/puppet/pops/types/iterable.rb', line 309

def reverse_each(&block)
  r = IntegerRangeIterator.new(@range, -@step_size)
  block_given? ? r.each(&block) : r
end

#size ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


314
315
316
 
# File 'lib/puppet/pops/types/iterable.rb', line 314

def size
  (@range.to - @range.from) / @step_size.abs
end

#step_iterator(step) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
 
# File 'lib/puppet/pops/types/iterable.rb', line 318

def step_iterator(step)
  # The step iterator must use a range that has its logical end truncated at an even step boundary. This will
  # fulfil two objectives:
  # 1. The element_type method should not report excessive integers as possible numbers
  # 2. A reversed iterator must start at the correct number
  #
  range = @range
  step = @step_size * step
  mod = (range.to - range.from) % step
  if mod < 0
    range = PIntegerType.new(range.from - mod, range.to)
  elsif mod > 0
    range = PIntegerType.new(range.from, range.to - mod)
  end
  IntegerRangeIterator.new(range, step)
end

#unbounded? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


335
336
337
 
# File 'lib/puppet/pops/types/iterable.rb', line 335

def unbounded?
  false
end