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meeseeks

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Meeseeks is a library for parsing and extracting data from HTML and XML with CSS or XPath selectors.

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meeseeks lib meeseeks selector combinator descendant_elements.ex
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lib/meeseeks/selector/combinator/descendant_elements.ex 

defmodule Meeseeks.Selector.Combinator.DescendantElements do

  use Meeseeks.Selector.Combinator

  @moduledoc false



  alias Meeseeks.Document



  defstruct selector: nil



  @impl true

  def next(_combinator, %Document.Element{children: []}, _document) do

    nil

  end



  def next(_combinator, %Document.Element{} = element, document) do

    case Document.descendants(document, element.id) do

      [] ->

        nil



      descendants ->

        case Enum.filter(descendants, &Document.element?(document, &1)) do

          [] ->

            nil



          descendant_elements ->

            Document.get_nodes(document, descendant_elements)

        end

    end

  end



  def next(_combinator, _element, _document) do

    nil

  end

end