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92 lines
2.7 KiB
C++
92 lines
2.7 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___MEMORY_AUTO_PTR_H
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#define _LIBCPP___MEMORY_AUTO_PTR_H
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#include <__config>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
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_LIBCPP_BEGIN_NAMESPACE_STD
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template <class _Tp>
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struct _LIBCPP_DEPRECATED_IN_CXX11 auto_ptr_ref {
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_Tp* __ptr_;
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};
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template <class _Tp>
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class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 auto_ptr {
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private:
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_Tp* __ptr_;
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public:
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typedef _Tp element_type;
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_LIBCPP_HIDE_FROM_ABI explicit auto_ptr(_Tp* __p = 0) _NOEXCEPT : __ptr_(__p) {}
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_LIBCPP_HIDE_FROM_ABI auto_ptr(auto_ptr& __p) _NOEXCEPT : __ptr_(__p.release()) {}
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template <class _Up>
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_LIBCPP_HIDE_FROM_ABI auto_ptr(auto_ptr<_Up>& __p) _NOEXCEPT : __ptr_(__p.release()) {}
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_LIBCPP_HIDE_FROM_ABI auto_ptr& operator=(auto_ptr& __p) _NOEXCEPT {
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reset(__p.release());
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return *this;
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}
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template <class _Up>
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_LIBCPP_HIDE_FROM_ABI auto_ptr& operator=(auto_ptr<_Up>& __p) _NOEXCEPT {
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reset(__p.release());
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return *this;
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}
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_LIBCPP_HIDE_FROM_ABI auto_ptr& operator=(auto_ptr_ref<_Tp> __p) _NOEXCEPT {
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reset(__p.__ptr_);
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return *this;
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}
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_LIBCPP_HIDE_FROM_ABI ~auto_ptr() _NOEXCEPT { delete __ptr_; }
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_LIBCPP_HIDE_FROM_ABI _Tp& operator*() const _NOEXCEPT { return *__ptr_; }
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_LIBCPP_HIDE_FROM_ABI _Tp* operator->() const _NOEXCEPT { return __ptr_; }
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_LIBCPP_HIDE_FROM_ABI _Tp* get() const _NOEXCEPT { return __ptr_; }
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_LIBCPP_HIDE_FROM_ABI _Tp* release() _NOEXCEPT {
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_Tp* __t = __ptr_;
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__ptr_ = nullptr;
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return __t;
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}
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_LIBCPP_HIDE_FROM_ABI void reset(_Tp* __p = 0) _NOEXCEPT {
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if (__ptr_ != __p)
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delete __ptr_;
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__ptr_ = __p;
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}
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_LIBCPP_HIDE_FROM_ABI auto_ptr(auto_ptr_ref<_Tp> __p) _NOEXCEPT : __ptr_(__p.__ptr_) {}
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template <class _Up>
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_LIBCPP_HIDE_FROM_ABI operator auto_ptr_ref<_Up>() _NOEXCEPT {
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auto_ptr_ref<_Up> __t;
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__t.__ptr_ = release();
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return __t;
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}
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template <class _Up>
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_LIBCPP_HIDE_FROM_ABI operator auto_ptr<_Up>() _NOEXCEPT {
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return auto_ptr<_Up>(release());
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}
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};
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template <>
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class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 auto_ptr<void> {
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public:
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typedef void element_type;
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};
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
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#endif // _LIBCPP___MEMORY_AUTO_PTR_H
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