Class: Nanoc::Core::ItemRepSelector::MicroGraph

Inherits:
Object
  • Object
show all
Defined in:
lib/nanoc/core/item_rep_selector.rb

Instance Method Summary collapse

Constructor Details

#initialize(reps) ⇒ MicroGraph

Returns a new instance of MicroGraph.



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# File 'lib/nanoc/core/item_rep_selector.rb', line 12

def initialize(reps)
  @reps = Set.new(reps)
  @stack = []
end

Instance Method Details

#mark_failed(dep) ⇒ Object 



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# File 'lib/nanoc/core/item_rep_selector.rb', line 34

def mark_failed(dep)
  if @stack.include?(dep)
    raise Nanoc::Core::Errors::DependencyCycle.new(@stack + [dep])
  end

  @reps.delete(dep)
  @stack.push(dep)
end

#mark_ok ⇒ Object 



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# File 'lib/nanoc/core/item_rep_selector.rb', line 30

def mark_ok
  @stack.pop
end

#next ⇒ Object 



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# File 'lib/nanoc/core/item_rep_selector.rb', line 17

def next
  if @stack.any?
    @stack.last
  elsif @reps.any?
    @reps.each { |rep| break rep }.tap do |rep|
      @reps.delete(rep)
      @stack.push(rep)
    end
  else
    nil
  end
end