[AOP] with a new keyword

[srburton]

Hi, my name is Renato Burton,

I have a new idea and I want to propose it for the discussion.

My idea is create a new keyword with name aspect example:

namespace Aop
{           
    public aspect class Program
    {   
        [Event]           
        static string Main(string[] args)
        {
            Console.WriteLine("Main method executed!");

            return "Logged!!!";
        }
    
       [Event]
        static void OtherMain(string[] args)
        {
            Console.WriteLine("OtherMain method executed!");
        }
    }

    public aspect class Event: Attribute
    {
        public void Handle(Type type, object[] args)
        {
            if (type.IsClass)
            {
                Console.WriteLine("The aspect intercept is class");
            }
            else (type.isMethod)
            {
                Console.WriteLine($"The method [name_method] with a arg: ${args[0]}");
            }
        }

       // When have return the method 
        public void Handle(Type type, dynamic value)
        {
            if(type.isMethod && value!= null)
            {
                Console.WriteLine($"The method [name_method] return : ${value}");
            }
           else if ( value == null){
                Console.WriteLine($"The method [name_method] return : null");
          }
        } 
    }
}

Run

Program.Main("I love c#")
Program.OtherMain("I don't love c#")

Output

  $ The method Main with a arg: I love c#
  $ Main method executed!
  $ The method Main return : Logged!!!

  $ The method OtherMain with a arg: I don't love c#
  $ OtherMain method executed!
  $ The method OtherMain return : null

[HaloFour]

Check out: https://www.postsharp.net/

Also:
#107
#7009

[srburton]

@HaloFour Yes, I saw that. But something in the core csharp i think is more performative.