traits.h File Reference

Go to the source code of this file.

Macros
#define	TTK_DECLARE_HAS_MEMBER(__trait_name__, __member_name__)
#define	TTK_DECLARE_GLOBAL_SIGNATURE(__trait_name__, __func_name__)
#define	TTK_DECLARE_CLASS_SIGNATURE(__trait_name__, __func_name__)

Macro Definition Documentation

#define TTK_DECLARE_CLASS_SIGNATURE	(		__trait_name__,
			__func_name__
	)

Value:

template <class Void, class Obj, class Func> \
    struct __trait_name__ : std::false_type {}; \
    template <class Obj, class Func> \
    struct __trait_name__<std::void_t<decltype(static_cast<Func Obj::*>(&Obj::__func_name__))>, Obj, Func> : std::true_type {}; \
    template <class Obj, class Func> \
    using __trait_name__##Check = __trait_name__<void, Obj, Func>;

Definition at line 46 of file traits.h.

#define TTK_DECLARE_GLOBAL_SIGNATURE	(		__trait_name__,
			__func_name__
	)

Value:

std::nullptr_t __func_name__(...); \
    template <class T> \
    struct __trait_name__ \
    { \
        template <class U, U> struct helper; \
        template <class U> static std::uint8_t test(helper<U*, &__func_name__>*); \
        template <class U> static std::uint16_t test(...); \
        static constexpr bool value = sizeof(test<T>(0)) == sizeof(std::uint8_t); \
    }

Definition at line 35 of file traits.h.

#define TTK_DECLARE_HAS_MEMBER	(		__trait_name__,
			__member_name__
	)

Value:

template <class T> \
    struct __trait_name__ \
    { \
        typedef typename std::remove_const<T>::type check_type; \
        struct base { void __member_name__() {}}; \
        struct mixin : public base, public check_type {}; \
        template <void (base::*)()> struct aux {}; \
        template <class U> static std::false_type test(aux<&U::__member_name__>*); \
        template <class U> static std::true_type test(...); \
        static constexpr bool value = (sizeof(std::true_type) == sizeof(test<mixin>(0))); \
    }

Definition at line 22 of file traits.h.