class Nokogiri::HTML5::DocumentFragment

def self.parse(tags, encoding = nil, options = {})
  doc = HTML5::Document.new
  tags = HTML5.read_and_encode(tags, encoding)
  doc.encoding = "UTF-8"
  new(doc, tags, nil, options)
end

def extract_params(params) # :nodoc:
  handler = params.find do |param|
    ![Hash, String, Symbol].include?(param.class)
  end
  params -= [handler] if handler
  hashes = []
  while Hash === params.last || params.last.nil?
    hashes << params.pop
    break if params.empty?
  end
  ns, binds = hashes.reverse
  ns ||=
    begin
      ns = {}
      children.each { |child| ns.merge!(child.namespaces) }
      ns
    end
  [params, handler, ns, binds]
end

def initialize(doc, tags = nil, ctx = nil, options = {}) # rubocop:disable Lint/MissingSuper
  self.document = doc
  self.errors = []
  return self unless tags
  max_attributes = options[:max_attributes] || Nokogiri::Gumbo::DEFAULT_MAX_ATTRIBUTES
  max_errors = options[:max_errors] || Nokogiri::Gumbo::DEFAULT_MAX_ERRORS
  max_depth = options[:max_tree_depth] || Nokogiri::Gumbo::DEFAULT_MAX_TREE_DEPTH
  tags = Nokogiri::HTML5.read_and_encode(tags, nil)
  Nokogiri::Gumbo.fragment(self, tags, ctx, max_attributes, max_errors, max_depth)
end

def serialize(options = {}, &block) # :nodoc:
  # Bypass XML::Document.serialize which doesn't support options even
  # though XML::Node.serialize does!
  XML::Node.instance_method(:serialize).bind_call(self, options, &block)
end