forked from OctaForge/libostd
some traits cleanup
This commit is contained in:
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a6bb089283
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680c0da0a6
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@ -24,8 +24,26 @@ namespace octa {
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template<typename...> struct __OctaCommonType;
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template<typename T>
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using RemoveCv = typename __OctaRemoveCv<T>::Type;
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template<typename T>
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using AddLvalueReference = typename __OctaAddLr<T>::Type;
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template<typename T>
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using AddRvalueReference = typename __OctaAddRr<T>::Type;
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template<typename T>
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using AddConst = typename __OctaAddConst<T>::Type;
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template<typename T>
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using RemoveReference = typename __OctaRemoveReference<T>::Type;
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template<typename T>
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using RemoveAllExtents = typename __OctaRemoveAllExtents<T>::Type;
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/* declval also defined here to avoid including utility.h */
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template<typename T> typename __OctaAddRr<T>::Type __octa_declval();
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template<typename T> AddRvalueReference<T> __octa_declval();
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/* integral constant */
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@ -51,16 +69,15 @@ namespace octa {
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template< > struct __OctaIsVoid<void>: True {};
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template<typename T>
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struct IsVoid: __OctaIsVoid<typename __OctaRemoveCv<T>::Type> {};
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struct IsVoid: __OctaIsVoid<RemoveCv<T>> {};
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/* is null pointer */
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template<typename> struct __OctaIsNullPointer : False {};
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template< > struct __OctaIsNullPointer<nullptr_t>: True {};
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template<typename T> struct IsNullPointer: __OctaIsNullPointer<
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typename __OctaRemoveCv<T>::Type
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> {};
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template<typename T> struct IsNullPointer:
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__OctaIsNullPointer<RemoveCv<T>> {};
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/* is integer */
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@ -84,7 +101,7 @@ namespace octa {
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template<> struct __OctaIsIntegral< wchar_t>: True {};
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template<typename T>
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struct IsIntegral: __OctaIsIntegral<typename __OctaRemoveCv<T>::Type> {};
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struct IsIntegral: __OctaIsIntegral<RemoveCv<T>> {};
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/* is floating point */
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@ -95,7 +112,7 @@ namespace octa {
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template<> struct __OctaIsFloatingPoint<ldouble>: True {};
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template<typename T>
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struct IsFloatingPoint: __OctaIsFloatingPoint<typename __OctaRemoveCv<T>::Type> {};
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struct IsFloatingPoint: __OctaIsFloatingPoint<RemoveCv<T>> {};
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/* is array */
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@ -109,7 +126,7 @@ namespace octa {
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template<typename T> struct __OctaIsPointer<T *>: True {};
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template<typename T>
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struct IsPointer: __OctaIsPointer<typename __OctaRemoveCv<T>::Type> {};
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struct IsPointer: __OctaIsPointer<RemoveCv<T>> {};
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/* is lvalue reference */
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@ -182,9 +199,7 @@ namespace octa {
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struct __OctaIsMemberPointer<T U::*>: True {};
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template<typename T>
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struct IsMemberPointer: __OctaIsMemberPointer<
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typename __OctaRemoveCv<T>::Type
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> {};
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struct IsMemberPointer: __OctaIsMemberPointer<RemoveCv<T>> {};
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/* is pointer to member object */
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@ -197,7 +212,7 @@ namespace octa {
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> {};
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template<typename T> struct IsMemberObjectPointer:
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__OctaIsMemberObjectPointer<typename __OctaRemoveCv<T>::Type> {};
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__OctaIsMemberObjectPointer<RemoveCv<T>> {};
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/* is pointer to member function */
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@ -210,7 +225,7 @@ namespace octa {
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> {};
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template<typename T> struct IsMemberFunctionPointer:
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__OctaIsMemberFunctionPointer<typename __OctaRemoveCv<T>::Type> {};
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__OctaIsMemberFunctionPointer<RemoveCv<T>> {};
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/* is reference */
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@ -284,7 +299,7 @@ namespace octa {
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template<typename T>
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struct IsTriviallyCopyable: IntegralConstant<bool,
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IsScalar<typename __OctaRemoveAllExtents<T>::Type>::value
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IsScalar<RemoveAllExtents<T>>::value
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> {};
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/* is trivial */
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@ -301,7 +316,7 @@ namespace octa {
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/* is constructible */
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#define __OCTA_MOVE(v) static_cast<typename __OctaRemoveReference<decltype(v)>::Type &&>(v)
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#define __OCTA_MOVE(v) static_cast<RemoveReference<decltype(v)> &&>(v)
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template<typename, typename T> struct __OctaSelect2nd { typedef T Type; };
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struct __OctaAny { __OctaAny(...); };
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@ -374,9 +389,7 @@ namespace octa {
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/* array types are default constructible if their element type is */
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template<typename T, size_t N>
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struct __OctaCtibleCore<false, T[N]>: __OctaCtible<
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typename __OctaRemoveAllExtents<T>::Type
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> {};
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struct __OctaCtibleCore<false, T[N]>: __OctaCtible<RemoveAllExtents<T>> {};
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/* otherwise array types are not constructible by this syntax */
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template<typename T, size_t N, typename ...A>
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@ -396,13 +409,13 @@ namespace octa {
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/* is copy constructible */
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template<typename T> struct IsCopyConstructible: IsConstructible<T,
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typename __OctaAddLr<typename __OctaAddConst<T>::Type>::Type
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AddLvalueReference<AddConst<T>>
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> {};
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/* is move constructible */
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template<typename T> struct IsMoveConstructible: IsConstructible<T,
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typename __OctaAddRr<T>::Type
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AddRvalueReference<T>
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> {};
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/* is assignable */
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@ -427,15 +440,15 @@ namespace octa {
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/* is copy assignable */
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template<typename T> struct IsCopyAssignable: IsAssignable<
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typename __OctaAddLr<T>::Type,
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typename __OctaAddLr<typename __OctaAddConst<T>::Type>::Type
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AddLvalueReference<T>,
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AddLvalueReference<AddConst<T>>
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> {};
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/* is move assignable */
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template<typename T> struct IsMoveAssignable: IsAssignable<
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typename __OctaAddLr<T>::Type,
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const typename __OctaAddRr<T>::Type
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AddLvalueReference<T>,
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const AddRvalueReference<T>
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> {};
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/* is destructible */
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@ -456,7 +469,7 @@ namespace octa {
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template<typename T>
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struct __OctaDtibleImpl<T, false>: IntegralConstant<bool,
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IsDestructorWellformed<typename __OctaRemoveAllExtents<T>::Type>::value
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IsDestructorWellformed<RemoveAllExtents<T>>::value
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> {};
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template<typename T>
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@ -509,14 +522,14 @@ namespace octa {
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template<typename T>
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struct IsTriviallyCopyConstructible: IsTriviallyConstructible<T,
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typename __OctaAddLr<const T>::Type
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AddLvalueReference<const T>
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> {};
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/* is trivially move constructible */
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template<typename T>
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struct IsTriviallyMoveConstructible: IsTriviallyConstructible<T,
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typename __OctaAddRr<T>::Type
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AddRvalueReference<T>
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> {};
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/* is trivially assignable */
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@ -548,14 +561,14 @@ namespace octa {
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template<typename T>
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struct IsTriviallyCopyAssignable: IsTriviallyAssignable<T,
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typename __OctaAddLr<const T>::Type
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AddLvalueReference<const T>
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> {};
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/* is trivially move assignable */
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template<typename T>
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struct IsTriviallyMoveAssignable: IsTriviallyAssignable<T,
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typename __OctaAddRr<T>::Type
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AddRvalueReference<T>
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> {};
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/* is trivially destructible */
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@ -599,14 +612,14 @@ namespace octa {
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template<typename T>
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struct IsNothrowCopyConstructible: IsNothrowConstructible<T,
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typename __OctaAddLr<const T>::Type
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AddLvalueReference<const T>
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> {};
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/* is nothrow move constructible */
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template<typename T>
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struct IsNothrowMoveConstructible: IsNothrowConstructible<T,
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typename __OctaAddRr<T>::Type
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AddRvalueReference<T>
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> {};
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/* is nothrow assignable */
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@ -638,14 +651,14 @@ namespace octa {
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template<typename T>
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struct IsNothrowCopyAssignable: IsNothrowAssignable<T,
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typename __OctaAddLr<const T>::Type
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AddLvalueReference<const T>
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> {};
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/* is nothrow move assignable */
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template<typename T>
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struct IsNothrowMoveAssignable: IsNothrowAssignable<T,
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typename __OctaAddRr<T>::Type
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AddRvalueReference<T>
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> {};
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/* is nothrow destructible */
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@ -746,57 +759,50 @@ namespace octa {
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template<typename T>
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struct __OctaRemoveVolatile<volatile T> { typedef T Type; };
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template<typename T>
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struct __OctaRemoveCv {
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typedef typename __OctaRemoveVolatile<
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typename __OctaRemoveConst<T>::Type
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>::Type Type;
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};
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template<typename T>
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using RemoveConst = typename __OctaRemoveConst<T>::Type;
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template<typename T>
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using RemoveVolatile = typename __OctaRemoveVolatile<T>::Type;
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template<typename T>
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using RemoveCv = typename __OctaRemoveCv<T>::Type;
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struct __OctaRemoveCv {
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typedef RemoveVolatile<RemoveConst<T>> Type;
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};
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/* add const, volatile, cv */
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template<typename T, bool = IsReference<T>::value
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|| IsFunction<T>::value || IsConst<T>::value>
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struct __Octa__OctaAddConst { typedef T Type; };
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struct __OctaAddConstBase { typedef T Type; };
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template<typename T> struct __Octa__OctaAddConst<T, false> {
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template<typename T> struct __OctaAddConstBase<T, false> {
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typedef const T Type;
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};
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template<typename T> struct __OctaAddConst {
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typedef typename __Octa__OctaAddConst<T>::Type Type;
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typedef typename __OctaAddConstBase<T>::Type Type;
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};
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template<typename T, bool = IsReference<T>::value
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|| IsFunction<T>::value || IsVolatile<T>::value>
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struct __Octa__OctaAddVolatile { typedef T Type; };
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struct __OctaAddVolatileBase { typedef T Type; };
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template<typename T> struct __Octa__OctaAddVolatile<T, false> {
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template<typename T> struct __OctaAddVolatileBase<T, false> {
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typedef volatile T Type;
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};
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template<typename T> struct __OctaAddVolatile {
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typedef typename __Octa__OctaAddVolatile<T>::Type Type;
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typedef typename __OctaAddVolatileBase<T>::Type Type;
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};
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template<typename T>
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using AddVolatile = typename __OctaAddVolatile<T>::Type;
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template<typename T>
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struct __OctaAddCv {
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typedef typename __OctaAddConst<
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typename __OctaAddVolatile<T>::Type
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>::Type Type;
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typedef AddConst<AddVolatile<T>> Type;
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};
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template<typename T>
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using AddConst = typename __OctaAddConst<T>::Type;
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template<typename T>
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using AddVolatile = typename __OctaAddVolatile<T>::Type;
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template<typename T>
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using AddCv = typename __OctaAddCv<T>::Type;
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@ -809,9 +815,6 @@ namespace octa {
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template<typename T>
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struct __OctaRemoveReference<T &&> { typedef T Type; };
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template<typename T>
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using RemoveReference = typename __OctaRemoveReference<T>::Type;
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/* remove pointer */
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template<typename T>
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@ -831,7 +834,7 @@ namespace octa {
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/* add pointer */
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template<typename T> struct __OctaAddPointer {
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typedef typename __OctaRemoveReference<T>::Type *Type;
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typedef RemoveReference<T> *Type;
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};
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template<typename T>
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@ -855,9 +858,6 @@ namespace octa {
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typedef const volatile void Type;
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};
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template<typename T>
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using AddLvalueReference = typename __OctaAddLr<T>::Type;
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/* add rvalue reference */
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template<typename T> struct __OctaAddRr { typedef T &&Type; };
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@ -876,9 +876,6 @@ namespace octa {
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typedef const volatile void Type;
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};
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template<typename T>
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using AddRvalueReference = typename __OctaAddRr<T>::Type;
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/* remove extent */
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template<typename T>
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@ -896,16 +893,13 @@ namespace octa {
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template<typename T> struct __OctaRemoveAllExtents { typedef T Type; };
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template<typename T> struct __OctaRemoveAllExtents<T[]> {
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typedef typename __OctaRemoveAllExtents<T>::Type Type;
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typedef RemoveAllExtents<T> Type;
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};
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template<typename T, size_t N> struct __OctaRemoveAllExtents<T[N]> {
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typedef typename __OctaRemoveAllExtents<T>::Type Type;
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typedef RemoveAllExtents<T> Type;
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};
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template<typename T>
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using RemoveAllExtents = typename __OctaRemoveAllExtents<T>::Type;
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/* make (un)signed
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*
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* this is bad, but i don't see any better way
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@ -951,8 +945,8 @@ namespace octa {
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};
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template<typename T, typename U,
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bool = IsConst<typename __OctaRemoveReference<T>::Type>::value,
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bool = IsVolatile<typename __OctaRemoveReference<T>::Type>::value
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bool = IsConst<RemoveReference<T>>::value,
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bool = IsVolatile<RemoveReference<T>>::value
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> struct __OctaApplyCv {
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typedef U Type;
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};
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@ -1029,17 +1023,13 @@ namespace octa {
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template<typename T> struct __OctaMakeSignedBase {
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typedef typename __OctaApplyCv<T,
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typename __OctaMakeSigned<
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typename __OctaRemoveCv<T>::Type
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>::Type
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typename __OctaMakeSigned<RemoveCv<T>>::Type
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>::Type Type;
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};
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template<typename T> struct __OctaMakeUnsignedBase {
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typedef typename __OctaApplyCv<T,
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typename __OctaMakeUnsigned<
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typename __OctaRemoveCv<T>::Type
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>::Type
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typename __OctaMakeUnsigned<RemoveCv<T>>::Type
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>::Type Type;
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};
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@ -1121,15 +1111,12 @@ namespace octa {
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template<typename T>
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struct __OctaDecay {
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private:
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typedef typename __OctaRemoveReference<T>::Type U;
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typedef RemoveReference<T> U;
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public:
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typedef typename __OctaConditional<IsArray<U>::value,
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typename __OctaRemoveExtent<U>::Type *,
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typename __OctaConditional<IsFunction<U>::value,
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typename __OctaAddPointer<U>::Type,
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typename __OctaRemoveCv<U>::Type
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>::Type
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>::Type Type;
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typedef Conditional<IsArray<U>::value,
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RemoveExtent<U> *,
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Conditional<IsFunction<U>::value, AddPointer<U>, RemoveCv<U>>
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> Type;
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};
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template<typename T>
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