Re: Modify pointed object method behaviour

From:
James Kanze <james.kanze@gmail.com>
Newsgroups:
comp.lang.c++
Date:
Thu, 11 Jun 2009 01:41:00 -0700 (PDT)
Message-ID:
<0a6494b0-0aa5-4422-8a47-0d9a2c042988@z5g2000vba.googlegroups.com>
On Jun 10, 5:07 pm, Arkaitz Jimenez <Arkai...@gmail.com> wrote:

I think this is mostly impossible, but just want to be sure.
Say that I have this 2 untouchable things:
void my_func(MyBase *baseptr){
      base_ptr->one();
      base_ptr->two();}

class MyBase{
      void one(){implemented}
      void two(){implemented}
};

And now I want to test if my_func works ok but I can't use a
MyBase object, one and two implementations are too heavy, I
could use anything that my_func accepts, it'd accept pointers
to derived.

So, as far as I know any implementation would hardcode
base_ptr->one to the MyBase::one and base_ptr->two MyBase::two
because they're not even virtual and that doesn't let me any
room to play, inheritance, etc....
There's nothing I could do with RTTI that would do the trick without
modifying MyBase or my_func.
Am I correct?


Create a stub implementation of MyBase, and link to it, rather
than to the full implementation.

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James Kanze (GABI Software) email:james.kanze@gmail.com
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