module Eco::Data::Locations
  # It allows to create your own helper
  # @example of usage:
  #     module LocHelp
  #       include Eco::Data::Locations::DSL
  #     end
  #
  #     nodes_list = LocHelp.csv_nodes_from(csv_list_filename)
  #     csv_tree   = LocHelp.nodes_to_csv_tree(nodes_list)
  #     File.open(output_filename, 'w') { |fd| fd.write(csv_tree.to_csv) }
  #
  # @example of usage:
  #     class Foo
  #       include Eco::Data::Locations::DSL
  #
  #       def csv_tree_to_csv_list(csv_tree_filename)
  #         csv_list = nodes_to_csv_list(csv_nodes_from(csv_tree_filename))
  #         File.open(output_filename, 'w') { |fd| fd.write(csv_list.to_csv) }
  #       end
  #
  #       def live_tree_to_csv_tree(org_tagtree)
  #         File.open(output_filename, 'w') { |fd| fd.write(csv_tree(org_tagtree).to_csv) }
  #       end
  #     end
  #
  module DSL
    class << self
      def included(base)
        super(base)
        base.extend Eco::Data::Locations::NodeBase::Builder
        base.send :include, Eco::Data::Locations::NodeBase::Builder
      end
    end
  end
end