Re: [orbitcpp-list] to hell with inheritance ;)

[Phil D. <ph...@us...>]

Phil Dawes wrote:
> 
> Andreas Kloeckner wrote:
> >
> > Example:
> >
> >     A
> >    / \
> >   B   C
> >    \ /
> >     D
> >
> > In this case, the compiler might generate something like: (A,B,C
> > straightforward, with inheritance)
> >
> > class D : B {
> >   operator C { reinterpret_cast... blah... }
> >   stub_of_C_1(blah) { reinterpret_cast<C *>(this)->stub_of_C_1(blah); }
> >   stub_of_C_2(blah) { reinterpret_cast<C *>(this)->stub_of_C_2(blah); }
> >   ...
> >   rest of D
> > };
> >
> > what do you think?
> > 
> 
> Yep, I was coming to that conclusion today on the train home from work.
> BTW, what does virtual inheritance do if you don't define any virtual
> methods?
> 

Having thought for a minute, I've realised that it must still instrument
the object instance with offset pointers to member state otherwise the
whole thing wouldn't work polymorphically. Doh!

Phil.