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1// -*- C++ -*-2//===----------------------------------------------------------------------===//3//4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.5// See https://llvm.org/LICENSE.txt for license information.6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception7//8//===----------------------------------------------------------------------===//9 10#ifndef _LIBCPP___MEMORY_AUTO_PTR_H11#define _LIBCPP___MEMORY_AUTO_PTR_H12 13#include <__config>14 15#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)16# pragma GCC system_header17#endif18 19#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)20 21_LIBCPP_BEGIN_NAMESPACE_STD22 23template <class _Tp>24struct _LIBCPP_DEPRECATED_IN_CXX11 auto_ptr_ref {25 _Tp* __ptr_;26};27 28template <class _Tp>29class _LIBCPP_DEPRECATED_IN_CXX11 auto_ptr {30private:31 _Tp* __ptr_;32 33public:34 typedef _Tp element_type;35 36 _LIBCPP_HIDE_FROM_ABI explicit auto_ptr(_Tp* __p = 0) _NOEXCEPT : __ptr_(__p) {}37 _LIBCPP_HIDE_FROM_ABI auto_ptr(auto_ptr& __p) _NOEXCEPT : __ptr_(__p.release()) {}38 template <class _Up>39 _LIBCPP_HIDE_FROM_ABI auto_ptr(auto_ptr<_Up>& __p) _NOEXCEPT : __ptr_(__p.release()) {}40 _LIBCPP_HIDE_FROM_ABI auto_ptr& operator=(auto_ptr& __p) _NOEXCEPT {41 reset(__p.release());42 return *this;43 }44 template <class _Up>45 _LIBCPP_HIDE_FROM_ABI auto_ptr& operator=(auto_ptr<_Up>& __p) _NOEXCEPT {46 reset(__p.release());47 return *this;48 }49 _LIBCPP_HIDE_FROM_ABI auto_ptr& operator=(auto_ptr_ref<_Tp> __p) _NOEXCEPT {50 reset(__p.__ptr_);51 return *this;52 }53 _LIBCPP_HIDE_FROM_ABI ~auto_ptr() _NOEXCEPT { delete __ptr_; }54 55 _LIBCPP_HIDE_FROM_ABI _Tp& operator*() const _NOEXCEPT { return *__ptr_; }56 _LIBCPP_HIDE_FROM_ABI _Tp* operator->() const _NOEXCEPT { return __ptr_; }57 _LIBCPP_HIDE_FROM_ABI _Tp* get() const _NOEXCEPT { return __ptr_; }58 _LIBCPP_HIDE_FROM_ABI _Tp* release() _NOEXCEPT {59 _Tp* __t = __ptr_;60 __ptr_ = nullptr;61 return __t;62 }63 _LIBCPP_HIDE_FROM_ABI void reset(_Tp* __p = 0) _NOEXCEPT {64 if (__ptr_ != __p)65 delete __ptr_;66 __ptr_ = __p;67 }68 69 _LIBCPP_HIDE_FROM_ABI auto_ptr(auto_ptr_ref<_Tp> __p) _NOEXCEPT : __ptr_(__p.__ptr_) {}70 template <class _Up>71 _LIBCPP_HIDE_FROM_ABI operator auto_ptr_ref<_Up>() _NOEXCEPT {72 auto_ptr_ref<_Up> __t;73 __t.__ptr_ = release();74 return __t;75 }76 template <class _Up>77 _LIBCPP_HIDE_FROM_ABI operator auto_ptr<_Up>() _NOEXCEPT {78 return auto_ptr<_Up>(release());79 }80};81 82template <>83class _LIBCPP_DEPRECATED_IN_CXX11 auto_ptr<void> {84public:85 typedef void element_type;86};87 88_LIBCPP_END_NAMESPACE_STD89 90#endif // _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)91 92#endif // _LIBCPP___MEMORY_AUTO_PTR_H93