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_BEGIN_NAMESPACE_STD
20 
21 template <class _Tp>
22 struct _LIBCPP_DEPRECATED_IN_CXX11 auto_ptr_ref
23 {
24     _Tp* __ptr_;
25 };
26 
27 template<class _Tp>
28 class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 auto_ptr
29 {
30 private:
31     _Tp* __ptr_;
32 public:
33     typedef _Tp element_type;
34 
35     _LIBCPP_INLINE_VISIBILITY explicit auto_ptr(_Tp* __p = 0) _NOEXCEPT : __ptr_(__p) {}
36     _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr& __p) _NOEXCEPT : __ptr_(__p.release()) {}
37     template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr<_Up>& __p) _NOEXCEPT
38         : __ptr_(__p.release()) {}
39     _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr& __p) _NOEXCEPT
40         {reset(__p.release()); return *this;}
41     template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr<_Up>& __p) _NOEXCEPT
42         {reset(__p.release()); return *this;}
43     _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr_ref<_Tp> __p) _NOEXCEPT
44         {reset(__p.__ptr_); return *this;}
45     _LIBCPP_INLINE_VISIBILITY ~auto_ptr() _NOEXCEPT {delete __ptr_;}
46 
47     _LIBCPP_INLINE_VISIBILITY _Tp& operator*() const _NOEXCEPT
48         {return *__ptr_;}
49     _LIBCPP_INLINE_VISIBILITY _Tp* operator->() const _NOEXCEPT {return __ptr_;}
50     _LIBCPP_INLINE_VISIBILITY _Tp* get() const _NOEXCEPT {return __ptr_;}
51     _LIBCPP_INLINE_VISIBILITY _Tp* release() _NOEXCEPT
52     {
53         _Tp* __t = __ptr_;
54         __ptr_ = nullptr;
55         return __t;
56     }
57     _LIBCPP_INLINE_VISIBILITY void reset(_Tp* __p = 0) _NOEXCEPT
58     {
59         if (__ptr_ != __p)
60             delete __ptr_;
61         __ptr_ = __p;
62     }
63 
64     _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr_ref<_Tp> __p) _NOEXCEPT : __ptr_(__p.__ptr_) {}
65     template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr_ref<_Up>() _NOEXCEPT
66         {auto_ptr_ref<_Up> __t; __t.__ptr_ = release(); return __t;}
67     template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr<_Up>() _NOEXCEPT
68         {return auto_ptr<_Up>(release());}
69 };
70 
71 template <>
72 class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 auto_ptr<void>
73 {
74 public:
75     typedef void element_type;
76 };
77 
78 _LIBCPP_END_NAMESPACE_STD
79 
80 #endif // _LIBCPP___MEMORY_AUTO_PTR_H
81