require 'glimmer/xml/node'

module Glimmer
  module XML
    class DepthFirstSearchIterator
      def initialize(node, node_visitor)
        @node = node
        @node_visitor = node_visitor
      end

      def iterate
        process(@node)
      end

      def process(node)
        @node_visitor.process_before_children(node)
        node.children.each { |child| process(child) } if node.is_a?(Node)
        @node_visitor.process_after_children(node)
      end
    end
  end
end