forked from OctaForge/libostd
67 lines
2.1 KiB
C++
67 lines
2.1 KiB
C++
/* Utilities 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_UTILITY_H
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#define OCTA_UTILITY_H
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#include <stddef.h>
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namespace octa {
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/* aliased in traits.h later */
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namespace internal {
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template<typename T> struct RemoveReference { typedef T type; };
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template<typename T> struct RemoveReference<T&> { typedef T type; };
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template<typename T> struct RemoveReference<T&&> { typedef T type; };
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template<typename T> struct AddRvalueReference { typedef T &&type; };
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template<typename T> struct AddRvalueReference<T &> { typedef T &&type; };
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template<typename T> struct AddRvalueReference<T &&> { typedef T &&type; };
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template<> struct AddRvalueReference<void> {
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typedef void type;
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};
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template<> struct AddRvalueReference<const void> {
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typedef const void type;
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};
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template<> struct AddRvalueReference<volatile void> {
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typedef volatile void type;
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};
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template<> struct AddRvalueReference<const volatile void> {
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typedef const volatile void type;
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};
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}
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template<typename T>
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static inline constexpr typename internal::RemoveReference<T>::type &&
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move(T &&v) noexcept {
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return static_cast<typename internal::RemoveReference<T>::type &&>(v);
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}
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template<typename T>
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static inline constexpr T &&
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forward(typename internal::RemoveReference<T>::type &v) noexcept {
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return static_cast<T &&>(v);
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}
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template<typename T>
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static inline constexpr T &&
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forward(typename internal::RemoveReference<T>::type &&v) noexcept {
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return static_cast<T &&>(v);
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}
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template<typename T> typename internal::AddRvalueReference<T>::type declval();
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template<typename T> void swap(T &a, T &b) {
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T c(move(a));
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a = move(b);
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b = move(c);
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}
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template<typename T, size_t N> void swap(T (&a)[N], T (&b)[N]) {
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for (size_t i = 0; i < N; ++i) {
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swap(a[i], b[i]);
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}
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}
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}
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#endif |