boost::openmethod::inplace_vptr_derived

Adjust the v‐table pointer embedded in a class.

Synopsis

Declared in <boost/openmethod/inplace_vptr.hpp>

template<
    class Class,
    class Base,
    class... MoreBases>
class inplace_vptr_derived;

Protected Member Functions

Name

Description

inplace_vptr_derived [constructor]

Set the vptr to Class's v‐table.

~inplace_vptr_derived [destructor]

Set the vptr in each base class.

Description

inplace_vptr_derived is a CRTP mixin that adjusts the v‐table pointer in a inplace_vptr_base. It can be used only with classes that have inplace_vptr_base as a direct or indirect base class.

inplace_vptr_derived registers the class and its bases in Registry. It is not necessary to register them with use_class or BOOST_OPENMETHOD_REGISTER

The v‐table pointer is obtained directly from the Registry's static_vptr variable. No hashing is involved. If all the classes in Registry inherit from inplace_vptr_derived, the registry needs not have a policies::vptr policy, nor any policy it depends on (like policies::type_hash).

Template Parameters

Name Description

Class

The class in which to embed the v‐table pointer.

Base

A direct base class of Class.

MoreBases

More direct base classes of Class.

See Also

inplace_vptr_base for an example.

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