IronPython.Compiler.Ast.Expression.GetConstantValue C# (CSharp) Метод

        internal virtual object GetConstantValue() {            
            var folded = ConstantFold();
            if (folded != null && folded.IsConstant) {
                return folded.GetConstantValue();
            }

            throw new InvalidOperationException(GetType().Name + " is not a constant");
        }