private DynamicMetaObject InvokeFallback(DynamicMetaObjectBinder action, Expression codeContext, DynamicMetaObject /*!*/[] args) { InvokeBinder ib = action as InvokeBinder; if (ib != null) { if (_baseMetaObject != null) { return(_baseMetaObject.BindInvoke(ib, args)); } return(ib.FallbackInvoke(this.Restrict(this.GetLimitType()), args)); } PythonInvokeBinder pib = action as PythonInvokeBinder; if (pib != null) { IPythonInvokable ipi = _baseMetaObject as IPythonInvokable; if (ipi != null) { return(ipi.Invoke(pib, codeContext, this, args)); } if (_baseMetaObject != null) { return(pib.InvokeForeignObject(this, args)); } return(pib.Fallback(codeContext, this, args)); } // unreachable, we always have one of these binders throw new InvalidOperationException(); }