Bases.h File Reference

Traits class for representing derivation. More...

#include <type_traits>

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Classes
struct	SG::Virtual< T >
	Wrapper to indicate virtual derivation. More...
struct	SG::BaseType< T >
	Helper metafunction to get base class types. More...
struct	SG::BaseType< Virtual< T > >
struct	SG::NoBase
	Marker to indicate a nonexistent base class. More...
struct	SG::BaseList< T >
	Represent a list of base classes. More...
struct	SG::Bases< T >
	Traits class to hold derivation information. More...
struct	SG::BaseList< BASE, REST... >
	Represent a non-empty list of base classes. More...

Namespaces
	SG
	Forward declaration.

Typedefs
template<class T >
using	SG::BaseType_t = typename SG::BaseType< T >::type

Detailed Description

Traits class for representing derivation.

Author

scott snyder snyde.nosp@m.r@bn.nosp@m.l.gov

Date

Aug, 2020 For a class T, its base classes are available via the traits class defined here, as Bases<T>::bases. This will be an instantiation of BaseList, defined below, which provides a foreach_ function to iterate over the base classes. [<CENSORED> Qt defines ‘foreach’ as a macro, so we can't use that name!]

For this to work, the Bases class must be specialized for each class T. This is usually done using the SG_BASES macro defined in BaseInfo.h.

Definition in file Bases.h.