pointer to object destructor

[dan]

Hi All,
I've a question regarding function pointer and destructor.
Is it possible to create a typedef param (*myDestructorPointer)(), so
that I can assign
object->~myClassType() to my function pointer variable?

Definitely I have a proxy class, which can wrap several data types
from other libraries, but this data type can have destructor as
protected so I can't
compile if I use delete keyword to destroy wrapped object. I don't
know if other strategies exist

thank you, cheers,
w

 

[Permostat]

Hi All,
I've a question regarding function pointer and destructor.
Is it possible to create a typedef param (*myDestructorPointer)(), so
that I can assign
object->~myClassType() to my function pointer variable?

Definitely I have a proxy class, which can wrap several data types
from other libraries, but this data type can have destructor as
protected so I can't
compile if I use delete keyword to destroy wrapped object. I don't
know if  other strategies exist

thank you, cheers,
w

Blast it with piss.

sperm-

 

[Michael Doubez]

I've a question regarding function pointer and destructor.
Is it possible to create a typedef param (*myDestructorPointer)(), so
that I can assign
object->~myClassType() to my function pointer variable?

Definitely I have a proxy class, which can wrap several data types
from other libraries, but this data type can have destructor as
protected so I can't
compile if I use delete keyword to destroy wrapped object. I don't
know if  other strategies exist

 

[Michael Doubez]

Oups


This article might be of interest to you:
http://www.octopull.demon.co.uk/arglib/TheGrin.html

 

[Pavel]

Hi All,
I've a question regarding function pointer and destructor.
Is it possible to create a typedef param (*myDestructorPointer)(), so
that I can assign
object->~myClassType() to my function pointer variable?

Definitely I have a proxy class, which can wrap several data types
from other libraries, but this data type can have destructor as
protected so I can't
compile if I use delete keyword to destroy wrapped object. I don't
know if other strategies exist

thank you, cheers,
w

My understanding is that "The address of a destructor shall not be
taken" phrase (12.4-2) is a hint that pointer-to-member is also illegal
although I may be wrong. But, if I understand your problem correctly,
it's not necessary: you can expose the destructor via a regular static
function of a utility derived class:

class B { protected: ~B(); } // your data type with protected destructor
class BDestroyer : protected B { public: static DestroyB(B *b) {
assert(b); b->~B(); }

Now use BDestroyer:estroyB(B *) in whatever manner you wanted to use
the destructor pointer.

Depending on your situation, you might also want to:
- templatize the solution with <B> as a template parameter
- prohibit creation of the utility class's instances

Hope this helps,
-Pavel