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implement more traits + enable Decay (the remaining traits were implemented for it)

master
Daniel Kolesa 2015-04-23 02:16:48 +01:00
parent 8cfd714a2d
commit c1e9b5e5e5
2 changed files with 39 additions and 12 deletions
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45
octa/traits.h
View File

@ -21,8 +21,6 @@
namespace octa {
/* removers */
template<typename T> using RemoveReference = internal::RemoveReference<T>;
template<typename T> struct RemoveConst { typedef T type; };
template<typename T> struct RemoveConst<const T> { typedef T type; };
@ -181,6 +179,10 @@ namespace octa {
!IsFundamental<T>::value
> {};
/* is pointer to member function */
template<typename> struct IsMemberFunctionPointer: true_t {};
/* is pointer to member */
template<typename> struct IsMemberPointerBase: false_t {};
@ -192,6 +194,12 @@ namespace octa {
typename RemoveConstVolatile<T>::type
> {};
/* is pointer to member object */
template<typename T> struct IsMemberObjectPointer: IntegralConstant<bool,
(IsMemberPointer<T>::value && !IsMemberFunctionPointer<T>::value)
> {};
/* is reference */
template<typename T> struct IsReference: IntegralConstant<bool,
@ -230,11 +238,6 @@ namespace octa {
template<typename T> struct IsEmpty: IntegralConstant<bool, __is_empty(T)> {};
/* is literal type */
template<typename T>
struct IsLiteralType: IntegralConstant<bool, __is_literal_type(T)> {};
/* is POD */
template<typename T> struct IsPOD: IntegralConstant<bool, __is_pod(T)> {};
@ -259,6 +262,14 @@ namespace octa {
IsScalar<typename RemoveAllExtents<T>::type>::value
> {};
/* is literal type */
template<typename T>
struct IsLiteralType: IntegralConstant<bool,
IsReference<typename RemoveAllExtents<T>::type>::value
|| IsStandardLayout<T>::value
> {};
/* is base of */
template<typename B, typename D>
@ -296,6 +307,24 @@ namespace octa {
template<typename T, size_t N>
struct Rank<T[N]>: IntegralConstant<size_t, Rank<T>::value + 1> {};
/* remove reference */
template<typename T> using RemoveReference = internal::RemoveReference<T>;
/* remove pointer */
template<typename T> struct RemovePointer { typedef T type; };
template<typename T> struct RemovePointer<T * > { typedef T type; };
template<typename T> struct RemovePointer<T * const > { typedef T type; };
template<typename T> struct RemovePointer<T * volatile > { typedef T type; };
template<typename T> struct RemovePointer<T * const volatile> { typedef T type; };
/* add pointer */
template<typename T> struct AddPointer {
typedef typename RemoveReference<T>::type *type;
};
/* add lvalue reference */
template<typename T> struct AddLvalueReference { typedef T &type; };
@ -396,7 +425,6 @@ namespace octa {
/* decay */
#if 0
template<typename T>
struct Decay {
private:
@ -410,7 +438,6 @@ namespace octa {
>::type
>::type type;
};
#endif
}
#endif

6
octa/utility.h
View File

@ -11,9 +11,9 @@
namespace octa {
/* aliased in traits.h later */
namespace internal {
template<typename T> struct RemoveReference { typedef T type; };
template<typename T> struct RemoveReference<T&> { typedef T type; };
template<typename T> struct RemoveReference<T&&> { typedef T type; };
template<typename T> struct RemoveReference { typedef T type; };
template<typename T> struct RemoveReference<T &> { typedef T type; };
template<typename T> struct RemoveReference<T &&> { typedef T type; };
template<typename T> struct AddRvalueReference { typedef T &&type; };
template<typename T> struct AddRvalueReference<T &> { typedef T &&type; };