boost::openmethod::final_virtual_ptr

Creates a virtual_ptr for an object of a known dynamic type.

Synopsis

Declared in <boost/openmethod/core.hpp>

template<
    class Registry,
    typename Arg>
auto
final_virtual_ptr(Arg&& obj);

Description

Creates a virtual_ptr to an object, setting its v‐table pointer according to the declared type of its argument. Assumes that the static and dynamic types are the same. Sets the v‐table pointer to the registry::static_vptr for the class.

Class is not required to be polymorphic.

If runtime checks are enabled, and the argument is polymorphic, checks if the static and dynamic types are the same. If not, calls the error handler with a final_error value, then terminates the program with abort.

Errors

  • final_error The static and dynamic types of the object are different.

Return Value

A virtual_ptr<Class, Registry> pointing to obj.

Template Parameters

Name Description

Registry

A registry.

Arg

The type of the argument.

Parameters

Name Description

obj

A reference to an object.

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