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Added CObjectDeleter class, which invokes a given destructor function.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24963 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold 2008-04-13 22:33:44 +00:00
parent 52a7cf96b9
commit 34cbfd39d3
1 changed files with 47 additions and 4 deletions
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51
headers/private/shared/AutoDeleter.h
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@ -6,9 +6,10 @@
#define _AUTO_DELETER_H
/*! Scope-based automatic deletion of objects/arrays.
ObjectDeleter - deletes an object
ArrayDeleter - deletes an array
MemoryDeleter - free()s malloc()ed memory
ObjectDeleter - deletes an object
ArrayDeleter - deletes an array
MemoryDeleter - free()s malloc()ed memory
CObjectDeleter - calls an arbitrary specified destructor function
*/
#include <stdlib.h>
@ -65,7 +66,7 @@ public:
return object;
}
private:
protected:
C *fObject;
DeleteFunc fDelete;
};
@ -125,10 +126,52 @@ struct MemoryDeleter : AutoDeleter<void, MemoryDelete >
MemoryDeleter(void *memory) : AutoDeleter<void, MemoryDelete >(memory) {}
};
// CObjectDeleter
template<typename Type, typename DestructorReturnType>
struct CObjectDelete
{
inline void operator()(Type *object)
{
if (fDestructor != NULL)
fDestructor(object);
}
template<typename Destructor>
inline void operator=(Destructor destructor)
{
fDestructor = /*(void (*)(Type*))*/destructor;
}
private:
DestructorReturnType (*fDestructor)(Type*);
};
template<typename Type, typename DestructorReturnType = void>
struct CObjectDeleter
: AutoDeleter<Type, CObjectDelete<Type, DestructorReturnType> >
{
typedef AutoDeleter<Type, CObjectDelete<Type, DestructorReturnType> > Base;
template<typename Destructor>
CObjectDeleter(Destructor destructor) : Base()
{
Base::fDelete = destructor;
}
template<typename Destructor>
CObjectDeleter(Type *object, Destructor destructor) : Base(object)
{
Base::fDelete = destructor;
}
};
} // namespace BPrivate
using BPrivate::ObjectDeleter;
using BPrivate::ArrayDeleter;
using BPrivate::MemoryDeleter;
using BPrivate::CObjectDeleter;
#endif // _AUTO_DELETER_H