System.Data.FunctionNode.Optimize C# (CSharp) Метод

        internal override ExpressionNode Optimize()
        {
            for (int i = 0; i < _argumentCount; i++)
            {
                _arguments[i] = _arguments[i].Optimize();
            }

            Debug.Assert(_info > -1, "Optimizing unbound function "); // default info is -1, it means if not bounded, it should be -1, not 0!!

            if (s_funcs[_info]._id == FunctionId.In)
            {
                // we can not optimize the in node, just check that it has all constant arguments

                if (!IsConstant())
                {
                    throw ExprException.NonConstantArgument();
                }
            }
            else
            {
                if (IsConstant())
                {
                    return new ConstNode(table, ValueType.Object, Eval(), false);
                }
            }
            return this;
        }