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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___MEMORY_DESTRUCT_N_H
#define _LIBCPP___MEMORY_DESTRUCT_N_H
#include <__config>
#include <__type_traits/integral_constant.h>
#include <__type_traits/is_trivially_destructible.h>
#include <cstddef>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
struct __destruct_n
{
private:
size_t __size_;
template <class _Tp>
_LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT
{for (size_t __i = 0; __i < __size_; ++__i, ++__p) __p->~_Tp();}
template <class _Tp>
_LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT
{}
_LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT
{++__size_;}
_LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT
{}
_LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT
{__size_ = __s;}
_LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT
{}
public:
_LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT
: __size_(__s) {}
template <class _Tp>
_LIBCPP_INLINE_VISIBILITY void __incr() _NOEXCEPT
{__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
template <class _Tp>
_LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT
{__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
template <class _Tp>
_LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT
{__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
};
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___MEMORY_DESTRUCT_N_H
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