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-exception 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef _LIBCPP___MEMORY_AUTO_PTR_H 11 #define _LIBCPP___MEMORY_AUTO_PTR_H 12 13 #include <__config> 14 15 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 16 #pragma GCC system_header 17 #endif 18 19 _LIBCPP_PUSH_MACROS 20 #include <__undef_macros> 21 22 _LIBCPP_BEGIN_NAMESPACE_STD 23 24 template <class _Tp> 25 struct _LIBCPP_DEPRECATED_IN_CXX11 auto_ptr_ref 26 { 27 _Tp* __ptr_; 28 }; 29 30 template<class _Tp> 31 class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 auto_ptr 32 { 33 private: 34 _Tp* __ptr_; 35 public: 36 typedef _Tp element_type; 37 __ptr_(__p)38 _LIBCPP_INLINE_VISIBILITY explicit auto_ptr(_Tp* __p = 0) _NOEXCEPT : __ptr_(__p) {} auto_ptr(auto_ptr & __p)39 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr& __p) _NOEXCEPT : __ptr_(__p.release()) {} auto_ptr(auto_ptr<_Up> & __p)40 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr<_Up>& __p) _NOEXCEPT 41 : __ptr_(__p.release()) {} 42 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr& __p) _NOEXCEPT 43 {reset(__p.release()); return *this;} 44 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr<_Up>& __p) _NOEXCEPT 45 {reset(__p.release()); return *this;} 46 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr_ref<_Tp> __p) _NOEXCEPT 47 {reset(__p.__ptr_); return *this;} ~auto_ptr()48 _LIBCPP_INLINE_VISIBILITY ~auto_ptr() _NOEXCEPT {delete __ptr_;} 49 50 _LIBCPP_INLINE_VISIBILITY _Tp& operator*() const _NOEXCEPT 51 {return *__ptr_;} 52 _LIBCPP_INLINE_VISIBILITY _Tp* operator->() const _NOEXCEPT {return __ptr_;} get()53 _LIBCPP_INLINE_VISIBILITY _Tp* get() const _NOEXCEPT {return __ptr_;} release()54 _LIBCPP_INLINE_VISIBILITY _Tp* release() _NOEXCEPT 55 { 56 _Tp* __t = __ptr_; 57 __ptr_ = nullptr; 58 return __t; 59 } 60 _LIBCPP_INLINE_VISIBILITY void reset(_Tp* __p = 0) _NOEXCEPT 61 { 62 if (__ptr_ != __p) 63 delete __ptr_; 64 __ptr_ = __p; 65 } 66 auto_ptr(auto_ptr_ref<_Tp> __p)67 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr_ref<_Tp> __p) _NOEXCEPT : __ptr_(__p.__ptr_) {} 68 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr_ref<_Up>() _NOEXCEPT 69 {auto_ptr_ref<_Up> __t; __t.__ptr_ = release(); return __t;} 70 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr<_Up>() _NOEXCEPT 71 {return auto_ptr<_Up>(release());} 72 }; 73 74 template <> 75 class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 auto_ptr<void> 76 { 77 public: 78 typedef void element_type; 79 }; 80 81 _LIBCPP_END_NAMESPACE_STD 82 83 _LIBCPP_POP_MACROS 84 85 #endif // _LIBCPP___MEMORY_AUTO_PTR_H 86