63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
/* Type traits for OctaSTD.
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*
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* This file is part of OctaSTD. See COPYING.md for futher information.
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*/
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#ifndef OCTA_TRAITS_H
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#define OCTA_TRAITS_H
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#include "octa/types.h"
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namespace octa {
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template<typename T, T val>
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struct IntegralConstant {
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static const T value = val;
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typedef T value_type;
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typedef IntegralConstant<T, v> type;
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};
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typedef IntegralConstant<bool, true> true_t;
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typedef IntegralConstant<bool, false> false_t;
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template<typename T, T val> const T IntegralConstant<T, val>::value;
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template<typename T> struct IsInteger: false_t {};
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template<typename T> struct IsFloat : false_t {};
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template<typename T> struct IsPointer: false_t {};
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template<> struct IsInteger<bool >: true_t {};
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template<> struct IsInteger<char >: true_t {};
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template<> struct IsInteger<uchar >: true_t {};
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template<> struct IsInteger<schar >: true_t {};
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template<> struct IsInteger<short >: true_t {};
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template<> struct IsInteger<ushort>: true_t {};
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template<> struct IsInteger<int >: true_t {};
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template<> struct IsInteger<uint >: true_t {};
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template<> struct IsInteger<long >: true_t {};
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template<> struct IsInteger<ulong >: true_t {};
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template<> struct IsInteger<llong >: true_t {};
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template<> struct IsInteger<ullong>: true_t {};
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template<> struct IsFloat<float>: true_t {};
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template<> struct IsFloat<double>: true_t {};
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template<> struct IsFloat<ldouble>: true_t {};
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template<> struct IsPointer<T *>: true_t {};
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template<typename T> struct IsPOD: IntegralConstant<bool,
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(IsInteger<T>::value || IsFloat<T>::value || IsPointer<T>::value)
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> {};
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template<typename, typename>
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struct IsEqual {
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static const bool value = false;
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};
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template<typename T>
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struct IsEqual<T, T> {
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static const bool value = true;
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};
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}
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#endif |