[aspectc-user] run-time aspects

[Olaf Spinczyk]

Hi,

first of all, there are a few syntax errors in your code. For instance, 
aspect B should look like this:

aspect B {
   pointcut add() = "A";
   advice add() : int y;
};

Besides this syntax problem, you could compile both aspects together 
with your component code. The weaver will introduce the new members "y" 
*and* "Q" into the class "A".

Introductions are a means to implement *static* crosscutting. Therefore, 
all instances of A will contain both new members.

I'm sorry, but I don't understand the second part of your question: "If 
the answer to the first part is yes Then is there any way create objects 
of A, B or C independently?". Could you try to explain it again or is my 
answer already sufficient?

- Olaf


Jamal Siadat wrote:
> Hi All,
> I just have a couple of questions I was wondering if you may address for
> me please:
> first Does AspectC++ suopport the expansion of a particular class by two
> different aspects that may be compiled simuntaniously?
> for instance is it possible to have a class "A" and use aspects "B" and
> "C" to add some methods/variables to it. ( each of A and B add different
> methods and variables).
> 
> If the answer to the first part is yes Then is there any way create
> objects of A, B or C independently? Here is an example:
> 
> class A{
> A();
> ~A();
> int a;
> void b();
> }
> 
> aspect B {
> pointcut add() : "A";
> add (): int y;
> //adding integer y to class A
> };
> 
> aspect C {
> pointcut addition() : "A";
> addition (): bool Q;
> //adding bolean Q to class A
> };
> 
> Can I compile B and C simuntaniously? if so when I am running the program
> can I have:
> B b;
> b.y=5;
> If not, what alternatives would I have so I can just create B type  at
> run-time like above?
> 
> Thanks all,
> Jamal
> 
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