Class: Wombat::Iterator

Inherits:
PropertyContainer show all
Defined in:
lib/wombat/iterator.rb

Instance Attribute Summary collapse

Attributes inherited from PropertyContainer

#iterators

Instance Method Summary collapse

Methods inherited from PropertyContainer

#all_properties, #for_each, #method_missing, #to_ary

Constructor Details

#initialize(selector) ⇒ Iterator

Returns a new instance of Iterator.



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# File 'lib/wombat/iterator.rb', line 5

def initialize(selector)
  @selector = selector
  super()
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Wombat::PropertyContainer

Instance Attribute Details

#selector ⇒ Object

Returns the value of attribute selector.



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# File 'lib/wombat/iterator.rb', line 3

def selector
  @selector
end

Instance Method Details

#flatten(depth = nil) ⇒ Object 



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# File 'lib/wombat/iterator.rb', line 27

def flatten(depth = nil)
 	# determine the iterator length by the biggest property array that we have
 	length = all_properties.map(&:result).sort { |a| a.length }.last.size

 	Array.new.tap do |a|
 	length.times do |i|
 		a << super(i)
 	end
 end
end

#parse ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/wombat/iterator.rb', line 10

def parse
	raise ArgumentError.new('Must provide a block to locate property values') unless block_given?

  all_properties.each do |p|
    p.result ||= []
    result = yield p
    if result
      result = p.callback ? p.callback.call(result) : result
      p.result << result
    end
  end
end

#reset ⇒ Object 



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# File 'lib/wombat/iterator.rb', line 23

def reset
  all_properties.each { |p| p.reset }
end