class Async::Node

def consume
	if parent = @parent and finished?
		parent.remove_child(self)
		
		# If we have children, then we need to move them to our the parent if they are not finished:
		if @children
			while child = @children.shift
				if child.finished?
					child.set_parent(nil)
				else
					parent.add_child(child)
				end
			end
			
			@children = nil
		end
		
		parent.consume
	end
end