Angus Leeming wrote:
> I need some guidance here... My feeling is to add 'create_ptr' and
> 'destroy_ptr' template parameters to copied_ptr...
I remembered tha boost::shared_ptr has a Deleter template parameter., so I am
not talking crap here.
We would need a Creator parameter too. Something like this would do it.
But, is it worth the effort?
Angus
==================================================================
copied_ptr.h
template <typename T,
typename CreatorT=DefaultCreator<T>,
typename DeleterT=DefaultDeleter<T>>
class copied_ptr {
T * ptr_;
CreatorT create;
DeleterT destroy;
~copied_ptr() { destroy(ptr_); }
void copy(copied_ptr const & other) {
ptr_ = other.ptr_ ? create(*other.ptr_) : 0;
}
// rest of the class is unchanged
...
};
template <typename T>
struct DefaultCreator {
T * operator()(T const & other) { return new T(other); }
}
template <typename T>
struct DefaultDeleter {
void operator()(T * ptr) { delete ptr; }
}
==================================================================
bufferparams.h
class BufferParams {
...
class Impl;
struct ImplCreator {
// defined out-of-line, in bufferparams.C
Impl * operator()(Impl const &);
}
struct ImplDeleter {
// defined out-of-line, in bufferparams.C
void operator()(Impl *);
}
lyx::support::copied_ptr<Impl, ImplCreator, ImplDeleter> pimpl_;
};
