class FoodCritic::Linter

def matches(match_method, *params)
  return [] unless match_method.respond_to?(:yield)
  matches = match_method.yield(*params)
  return [] unless matches.respond_to?(:each)
  # We convert Nokogiri nodes to matches transparently
  matches.map do |m|
    if m.respond_to?(:node_name)
      match(m)
    elsif m.respond_to?(:xpath)
      m.to_a.map { |n| match(n) }
    else
      m
    end
  end.flatten
end