module BinData::CheckOrAdjustOffsetPlugin

def self.included(base) #:nodoc:
  base.optional_parameters :check_offset, :adjust_offset
  base.mutually_exclusive_parameters :check_offset, :adjust_offset
end

def initialize_shared_instance
  extend CheckOffsetMixin  if has_parameter?(:check_offset)
  extend AdjustOffsetMixin if has_parameter?(:adjust_offset)
  super
end