Arithmetica.MathExpressionFunctionFactory.RegisterFunctions C# (CSharp) Метод

        internal void RegisterFunctions(Assembly assembly)
        {
            foreach(Type type in assembly.GetLoadableTypes())
            {
                // Not a class or abstract?
                if(!type.IsClass || type.IsAbstract)
                {
                    continue;
                }
                // Is the type not assignable from the function base class?
                if(!typeof(MathExpressionFunction).IsAssignableFrom(type))
                {
                    continue;
                }

                // Make sure there is at least one parameterless constructor.
                ConstructorInfo[] constructors = type.GetConstructors();
                ConstructorInfo constructor = constructors.FirstOrDefault(x => x.GetParameters().Length == 0);
                if(constructor == null)
                {
                    string message = string.Format("Function of type '{0}' has no parameterless constructor.", type.FullName);
                    throw new MathExpressionException(message);
                }

                // Register the function.
                MathExpressionFunction function = Activator.CreateInstance(type) as MathExpressionFunction;
                this.RegisterFunction(function);
            }
        }