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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/contrib/llvm-project/libcxx/include/__memory/auto_ptr.h
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// -*- 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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