/* vim: set ft=cpp: * * Copyright (c) 2018- Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 2.0 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ // Darwin kernel type_traits and other stuff #ifndef IOG_TL_OSUTILITY #define IOG_TL_OSUTILITY #include <_config> _IOG_START_NAMESPACE typedef decltype(nullptr) nullptr_t; // Reference removal template <class _T> struct remove_reference {typedef _T type;}; template <class _T> struct remove_reference<_T&> {typedef _T type;}; template <class _T> struct remove_reference<_T&&> {typedef _T type;}; template <class _T> using remove_reference_t = typename remove_reference<_T>::type; // Pointer removal template<class _T> struct remove_pointer {typedef _T type;}; template<class _T> struct remove_pointer<_T*> {typedef _T type;}; template<class _T> struct remove_pointer<_T* const> {typedef _T type;}; template<class _T> struct remove_pointer<_T* volatile> {typedef _T type;}; template<class _T> struct remove_pointer<_T* const volatile> {typedef _T type;}; template<class _T> using remove_pointer_t = typename remove_pointer<_T>::type; // Const/Volatile template<typename _T> struct remove_const {typedef _T type;}; template<typename _T> struct remove_const<const _T> {typedef _T type;}; template<typename _T> struct remove_volatile {typedef _T type;}; template<typename _T> struct remove_volatile<volatile _T> {typedef _T type;}; // move template <class _T> inline remove_reference_t<_T>&& move(_T&& _t) { return static_cast<remove_reference_t<_T>&&>(_t); } template <typename _T> void swap(_T& lhs, _T& rhs) { _T tmp; tmp = _VIOG::move(lhs); lhs = _VIOG::move(rhs); rhs = _VIOG::move(tmp); } _IOG_END_NAMESPACE #endif /* IOG_TL_OSUTILITY */