module Tins::Memoize::CacheMethods

def __memoize_cache__
  @__memoize_cache__ ||= {}
end

def memoize_apply_visibility(id)
  visibility = instance_eval do
    case
    when private_method_defined?(id)
      :private
    when protected_method_defined?(id)
      :protected
    end
  end
  yield
ensure
  visibility and __send__(visibility, id)
end

def memoize_cache_clear
   __memoize_cache__.clear
  self
end