# File lib/active_support/core_ext/date/calculations.rb, line 94 def advance(options) options = options.dup d = self d = d >> options.delete(:years) * 12 if options[:years] d = d >> options.delete(:months) if options[:months] d = d + options.delete(:weeks) * 7 if options[:weeks] d = d + options.delete(:days) if options[:days] d end