public Tret UpdateBindingAndInvoke(CodeContext context, T0 arg0)
        {
            StandardRule <DynamicSiteTarget <T0, Tret> > rule = _rules.GetRule(context, arg0);

            if (rule != null)
            {
                // site is truly polymorphic, build the polymorphic method
                _target = _rules.GetOrMakeTarget(context);
                return(_target(this, context, arg0));
            }

            return((Tret)context.LanguageContext.Binder.UpdateSiteAndExecute <DynamicSiteTarget <T0, Tret> >(context, Action, new object[] { arg0 }, this, ref _target, ref _rules));
        }
 internal DynamicSite(DynamicAction action)
     : base(action)
 {
     this._rules  = RuleSet <DynamicSiteTarget <T0, Tret> > .EmptyRules;
     this._target = this._rules.GetOrMakeTarget(null);
 }