TypeEnumerator.h File Reference

Make a list of all distinct types so far mentioned in calls of a certain macro. More...

#include "TypeList.h"

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Classes
struct	TypeEnumerator::detail::type_identity< T >
	Standard in C++20. More...
struct	TypeEnumerator::detail::Unenumerated
	A type excluded from any enumeration. More...
class	TypeEnumerator::detail::CountTypes< Tag, Location >
struct	TypeEnumerator::detail::CountTypes< Tag, Location >::Stop< U >
struct	TypeEnumerator::detail::CountTypes< Tag, Location >::Count< U >
struct	TypeEnumerator::detail::TypeCounter< Tag, T >
	Implements the ENUMERATE_TYPE macro. More...
struct	TypeEnumerator::detail::TypeCounter< Tag, T >::Location
class	TypeEnumerator::CollectTypes< Tag, Location >
struct	TypeEnumerator::CollectTypes< Tag, Location >::Stop< Types >
struct	TypeEnumerator::CollectTypes< Tag, Location >::AccumulateType< U, Type, Types >
struct	TypeEnumerator::CollectTypes< Tag, Location >::Accumulate< U, Types >

Namespaces
namespace	TypeEnumerator
namespace	TypeEnumerator::detail

Macros
#define	BEGIN_TYPE_ENUMERATION(Tag)
#define	ENUMERATE_TYPE(Tag, T)
	This macro must occur at file scope, not within any other namespace. More...

Typedefs
template<typename Tag , typename Location , unsigned U>
using	TypeEnumerator::detail::EnumeratedType = typename decltype(enumerateTypes(Tag{}, Location{}, std::integral_constant< unsigned, U >{}))::type

Detailed Description

Make a list of all distinct types so far mentioned in calls of a certain macro.

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Definition in file TypeEnumerator.h.

Macro Definition Documentation

BEGIN_TYPE_ENUMERATION

#define BEGIN_TYPE_ENUMERATION

(

Tag

)

Value:

   namespace { \
   struct Tag{}; \
   auto enumerateTypes(Tag, Tag, ...) -> TypeEnumerator::detail::Unenumerated; }

Inject an unevaluated function, whose overloads will help to define a metafunction from an initial segment of the unsigned integers to distinct types. Tag will name an empty structure type to distinguish this enumeration. The macro call must occur at file scope, not within any other namespace.

Definition at line 74 of file TypeEnumerator.h.

ENUMERATE_TYPE

#define ENUMERATE_TYPE	(		Tag,
			T
	)

Value:

   namespace { auto enumerateTypes( \
   Tag, Tag, std::integral_constant<unsigned, \
      TypeEnumerator::detail::TypeCounter<Tag, T>::value>) \
         -> TypeEnumerator::detail::type_identity<T>; }

This macro must occur at file scope, not within any other namespace.

Definition at line 79 of file TypeEnumerator.h.