Re: Mix Static and dynamic Polymorphism

From:
Jun <junhufr@gmail.com>
Newsgroups:
comp.lang.c++.moderated
Date:
Sat, 7 Nov 2009 18:23:17 CST
Message-ID:
<2d274440-637b-4a8f-8e46-c9c6acce4cf7@j19g2000yqk.googlegroups.com>
{ Please avoid top-posting, and don't quote the clc++m banner. -mod }

Hello all,

I just reach a solution that simply regard interface::execute as a
wrapped member function,
name it different from PolicyA::execute and wrap it inside:

struct Interface{
     virtual void run() = 0;
    virtual void executeInterface() = 0;
}

template <class Policy>
struct Base : public Policy, public Interface{
    using Policy::execute;
     void run(){
          // implementing base ;
     }

    void executeInterface(){
         execute();
    }
}

This solution is just a little bit "ugly", could someone find a
solution
that compose the Interface class ? Thank you in advance.

Jun

On Nov 7, 11:16 am, Jun <junh...@gmail.com> wrote:

Hello all,

I just tried to mix static and dynamic polymorphism together.

I've a vector to store all the elements, and the implementations
of elements are slightly different. I used Policy-based design:

struct Interface{
   virtual void run(void) = 0;
   virtual void execute(void) = 0;

};

struct PolicyA{
   void execute(){
      // implementing Policy A;
   }

};

struct PolicyB{
   void execute(){
      // implementing Policy B;
   }

};

template <class Policy>
struct Base : public Policy, public Interface{
    void run(){
         // implementing base ;
    }

}

Anyway, those codes don't compile .... Anyone has some suggestions ?
Thank you in advance.

Jun

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