module Unparser::Adamantium::ModuleMethods

def memoize(*methods)
  methods.each(&method(:memoize_method))
  self
end

def memoize_method(method_name)
  if memoized_methods.key?(method_name)
    fail ArgumentError, "##{method_name} is already memoized"
  end
  memoized_methods[method_name] = MethodBuilder.new(self, method_name).call
end

def memoized?(method_name)
  memoized_methods.key?(method_name)
end

def memoized_methods
  @memoized_methods ||= {}
end

def unmemoized_instance_method(method_name)
  memoized_methods.fetch(method_name) do
    fail ArgumentError, "##{method_name} is not memoized"
  end
end