llvm-capstone/libcxx/include/array
Mark de Wever 8ff2d6af69 [libc++] Reduces the number of transitive includes.
This defines a new policy for removal of transitive includes.
The goal of the policy it to make it relatively easy to remove
headers when needed, but avoid breaking developers using and
vendors shipping libc++.

The method used is to guard transitive includes based on the
C++ language version. For the upcoming C++23 we can remove
headers when we want, but for other language versions we try
to keep it to a minimum.

In this code the transitive include of `<chrono>` is removed
since D128577 introduces a header cycle between `<format>`
and `<chrono>`. This cycle is indirectly required by the
Standard. Our cycle dependency tool basically is a grep based
tool, so it needs some hints to ignore cycles. With the input
of our transitive include tests we can create a better tool.
However that's out of the scope of this patch.

Note the flag `_LIBCPP_REMOVE_TRANSITIVE_INCLUDES` remains
unchanged. So users can still opt-out of transitives includes
entirely.

Reviewed By: #libc, ldionne, philnik

Differential Revision: https://reviews.llvm.org/D132284
2022-08-31 19:50:03 +02:00

539 lines
21 KiB
C++

// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// 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_ARRAY
#define _LIBCPP_ARRAY
/*
array synopsis
namespace std
{
template <class T, size_t N >
struct array
{
// types:
typedef T & reference;
typedef const T & const_reference;
typedef implementation defined iterator;
typedef implementation defined const_iterator;
typedef size_t size_type;
typedef ptrdiff_t difference_type;
typedef T value_type;
typedef T* pointer;
typedef const T* const_pointer;
typedef std::reverse_iterator<iterator> reverse_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
// No explicit construct/copy/destroy for aggregate type
void fill(const T& u); // constexpr in C++20
void swap(array& a) noexcept(is_nothrow_swappable_v<T>); // constexpr in C++20
// iterators:
iterator begin() noexcept; // constexpr in C++17
const_iterator begin() const noexcept; // constexpr in C++17
iterator end() noexcept; // constexpr in C++17
const_iterator end() const noexcept; // constexpr in C++17
reverse_iterator rbegin() noexcept; // constexpr in C++17
const_reverse_iterator rbegin() const noexcept; // constexpr in C++17
reverse_iterator rend() noexcept; // constexpr in C++17
const_reverse_iterator rend() const noexcept; // constexpr in C++17
const_iterator cbegin() const noexcept; // constexpr in C++17
const_iterator cend() const noexcept; // constexpr in C++17
const_reverse_iterator crbegin() const noexcept; // constexpr in C++17
const_reverse_iterator crend() const noexcept; // constexpr in C++17
// capacity:
constexpr size_type size() const noexcept;
constexpr size_type max_size() const noexcept;
constexpr bool empty() const noexcept;
// element access:
reference operator[](size_type n); // constexpr in C++17
const_reference operator[](size_type n) const; // constexpr in C++14
reference at(size_type n); // constexpr in C++17
const_reference at(size_type n) const; // constexpr in C++14
reference front(); // constexpr in C++17
const_reference front() const; // constexpr in C++14
reference back(); // constexpr in C++17
const_reference back() const; // constexpr in C++14
T* data() noexcept; // constexpr in C++17
const T* data() const noexcept; // constexpr in C++17
};
template <class T, class... U>
array(T, U...) -> array<T, 1 + sizeof...(U)>; // C++17
template <class T, size_t N>
bool operator==(const array<T,N>& x, const array<T,N>& y); // constexpr in C++20
template <class T, size_t N>
bool operator!=(const array<T,N>& x, const array<T,N>& y); // constexpr in C++20
template <class T, size_t N>
bool operator<(const array<T,N>& x, const array<T,N>& y); // constexpr in C++20
template <class T, size_t N>
bool operator>(const array<T,N>& x, const array<T,N>& y); // constexpr in C++20
template <class T, size_t N>
bool operator<=(const array<T,N>& x, const array<T,N>& y); // constexpr in C++20
template <class T, size_t N>
bool operator>=(const array<T,N>& x, const array<T,N>& y); // constexpr in C++20
template <class T, size_t N >
void swap(array<T,N>& x, array<T,N>& y) noexcept(noexcept(x.swap(y))); // constexpr in C++20
template <class T, size_t N>
constexpr array<remove_cv_t<T>, N> to_array(T (&a)[N]); // C++20
template <class T, size_t N>
constexpr array<remove_cv_t<T>, N> to_array(T (&&a)[N]); // C++20
template <class T> struct tuple_size;
template <size_t I, class T> struct tuple_element;
template <class T, size_t N> struct tuple_size<array<T, N>>;
template <size_t I, class T, size_t N> struct tuple_element<I, array<T, N>>;
template <size_t I, class T, size_t N> T& get(array<T, N>&) noexcept; // constexpr in C++14
template <size_t I, class T, size_t N> const T& get(const array<T, N>&) noexcept; // constexpr in C++14
template <size_t I, class T, size_t N> T&& get(array<T, N>&&) noexcept; // constexpr in C++14
template <size_t I, class T, size_t N> const T&& get(const array<T, N>&&) noexcept; // constexpr in C++14
} // std
*/
#include <__algorithm/equal.h>
#include <__algorithm/fill_n.h>
#include <__algorithm/lexicographical_compare.h>
#include <__algorithm/swap_ranges.h>
#include <__assert> // all public C++ headers provide the assertion handler
#include <__config>
#include <__iterator/reverse_iterator.h>
#include <__tuple>
#include <__utility/integer_sequence.h>
#include <__utility/move.h>
#include <__utility/unreachable.h>
#include <stdexcept>
#include <type_traits>
#include <version>
#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
# include <algorithm>
# include <iterator>
# include <utility>
#endif
// standard-mandated includes
// [iterator.range]
#include <__iterator/access.h>
#include <__iterator/data.h>
#include <__iterator/empty.h>
#include <__iterator/reverse_access.h>
#include <__iterator/size.h>
// [array.syn]
#include <compare>
#include <initializer_list>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Tp, size_t _Size>
struct _LIBCPP_TEMPLATE_VIS array
{
// types:
typedef array __self;
typedef _Tp value_type;
typedef value_type& reference;
typedef const value_type& const_reference;
typedef value_type* iterator;
typedef const value_type* const_iterator;
typedef value_type* pointer;
typedef const value_type* const_pointer;
typedef size_t size_type;
typedef ptrdiff_t difference_type;
typedef _VSTD::reverse_iterator<iterator> reverse_iterator;
typedef _VSTD::reverse_iterator<const_iterator> const_reverse_iterator;
_Tp __elems_[_Size];
// No explicit construct/copy/destroy for aggregate type
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
void fill(const value_type& __u) {
_VSTD::fill_n(data(), _Size, __u);
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
void swap(array& __a) _NOEXCEPT_(__is_nothrow_swappable<_Tp>::value) {
_VSTD::swap_ranges(data(), data() + _Size, __a.data());
}
// iterators:
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
iterator begin() _NOEXCEPT {return iterator(data());}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
const_iterator begin() const _NOEXCEPT {return const_iterator(data());}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
iterator end() _NOEXCEPT {return iterator(data() + _Size);}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
const_iterator end() const _NOEXCEPT {return const_iterator(data() + _Size);}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
reverse_iterator rbegin() _NOEXCEPT {return reverse_iterator(end());}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
const_reverse_iterator rbegin() const _NOEXCEPT {return const_reverse_iterator(end());}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
reverse_iterator rend() _NOEXCEPT {return reverse_iterator(begin());}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
const_reverse_iterator rend() const _NOEXCEPT {return const_reverse_iterator(begin());}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
const_iterator cbegin() const _NOEXCEPT {return begin();}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
const_iterator cend() const _NOEXCEPT {return end();}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
const_reverse_iterator crbegin() const _NOEXCEPT {return rbegin();}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
const_reverse_iterator crend() const _NOEXCEPT {return rend();}
// capacity:
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR size_type size() const _NOEXCEPT {return _Size;}
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR size_type max_size() const _NOEXCEPT {return _Size;}
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR bool empty() const _NOEXCEPT {return _Size == 0;}
// element access:
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
reference operator[](size_type __n) _NOEXCEPT {
_LIBCPP_ASSERT(__n < _Size, "out-of-bounds access in std::array<T, N>");
return __elems_[__n];
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14
const_reference operator[](size_type __n) const _NOEXCEPT {
_LIBCPP_ASSERT(__n < _Size, "out-of-bounds access in std::array<T, N>");
return __elems_[__n];
}
_LIBCPP_CONSTEXPR_SINCE_CXX17 reference at(size_type __n)
{
if (__n >= _Size)
__throw_out_of_range("array::at");
return __elems_[__n];
}
_LIBCPP_CONSTEXPR_SINCE_CXX14 const_reference at(size_type __n) const
{
if (__n >= _Size)
__throw_out_of_range("array::at");
return __elems_[__n];
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 reference front() _NOEXCEPT {return (*this)[0];}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 const_reference front() const _NOEXCEPT {return (*this)[0];}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17 reference back() _NOEXCEPT {return (*this)[_Size - 1];}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14 const_reference back() const _NOEXCEPT {return (*this)[_Size - 1];}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
value_type* data() _NOEXCEPT {return __elems_;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
const value_type* data() const _NOEXCEPT {return __elems_;}
};
template <class _Tp>
struct _LIBCPP_TEMPLATE_VIS array<_Tp, 0>
{
// types:
typedef array __self;
typedef _Tp value_type;
typedef value_type& reference;
typedef const value_type& const_reference;
typedef value_type* iterator;
typedef const value_type* const_iterator;
typedef value_type* pointer;
typedef const value_type* const_pointer;
typedef size_t size_type;
typedef ptrdiff_t difference_type;
typedef _VSTD::reverse_iterator<iterator> reverse_iterator;
typedef _VSTD::reverse_iterator<const_iterator> const_reverse_iterator;
typedef typename conditional<is_const<_Tp>::value, const char,
char>::type _CharType;
struct _ArrayInStructT { _Tp __data_[1]; };
_ALIGNAS_TYPE(_ArrayInStructT) _CharType __elems_[sizeof(_ArrayInStructT)];
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
value_type* data() _NOEXCEPT {return nullptr;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
const value_type* data() const _NOEXCEPT {return nullptr;}
// No explicit construct/copy/destroy for aggregate type
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
void fill(const value_type&) {
static_assert(!is_const<_Tp>::value,
"cannot fill zero-sized array of type 'const T'");
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
void swap(array&) _NOEXCEPT {
static_assert(!is_const<_Tp>::value,
"cannot swap zero-sized array of type 'const T'");
}
// iterators:
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
iterator begin() _NOEXCEPT {return iterator(data());}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
const_iterator begin() const _NOEXCEPT {return const_iterator(data());}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
iterator end() _NOEXCEPT {return iterator(data());}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
const_iterator end() const _NOEXCEPT {return const_iterator(data());}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
reverse_iterator rbegin() _NOEXCEPT {return reverse_iterator(end());}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
const_reverse_iterator rbegin() const _NOEXCEPT {return const_reverse_iterator(end());}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
reverse_iterator rend() _NOEXCEPT {return reverse_iterator(begin());}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
const_reverse_iterator rend() const _NOEXCEPT {return const_reverse_iterator(begin());}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
const_iterator cbegin() const _NOEXCEPT {return begin();}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
const_iterator cend() const _NOEXCEPT {return end();}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
const_reverse_iterator crbegin() const _NOEXCEPT {return rbegin();}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
const_reverse_iterator crend() const _NOEXCEPT {return rend();}
// capacity:
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR size_type size() const _NOEXCEPT {return 0; }
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR size_type max_size() const _NOEXCEPT {return 0;}
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR bool empty() const _NOEXCEPT {return true;}
// element access:
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
reference operator[](size_type) _NOEXCEPT {
_LIBCPP_ASSERT(false, "cannot call array<T, 0>::operator[] on a zero-sized array");
__libcpp_unreachable();
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14
const_reference operator[](size_type) const _NOEXCEPT {
_LIBCPP_ASSERT(false, "cannot call array<T, 0>::operator[] on a zero-sized array");
__libcpp_unreachable();
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
reference at(size_type) {
__throw_out_of_range("array<T, 0>::at");
__libcpp_unreachable();
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14
const_reference at(size_type) const {
__throw_out_of_range("array<T, 0>::at");
__libcpp_unreachable();
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
reference front() _NOEXCEPT {
_LIBCPP_ASSERT(false, "cannot call array<T, 0>::front() on a zero-sized array");
__libcpp_unreachable();
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14
const_reference front() const _NOEXCEPT {
_LIBCPP_ASSERT(false, "cannot call array<T, 0>::front() on a zero-sized array");
__libcpp_unreachable();
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX17
reference back() _NOEXCEPT {
_LIBCPP_ASSERT(false, "cannot call array<T, 0>::back() on a zero-sized array");
__libcpp_unreachable();
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14
const_reference back() const _NOEXCEPT {
_LIBCPP_ASSERT(false, "cannot call array<T, 0>::back() on a zero-sized array");
__libcpp_unreachable();
}
};
#if _LIBCPP_STD_VER > 14
template<class _Tp, class... _Args,
class = enable_if_t<__all<_IsSame<_Tp, _Args>::value...>::value>
>
array(_Tp, _Args...)
-> array<_Tp, 1 + sizeof...(_Args)>;
#endif
template <class _Tp, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_SINCE_CXX20 bool
operator==(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
{
return _VSTD::equal(__x.begin(), __x.end(), __y.begin());
}
template <class _Tp, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_SINCE_CXX20 bool
operator!=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
{
return !(__x == __y);
}
template <class _Tp, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_SINCE_CXX20 bool
operator<(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
{
return _VSTD::lexicographical_compare(__x.begin(), __x.end(),
__y.begin(), __y.end());
}
template <class _Tp, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_SINCE_CXX20 bool
operator>(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
{
return __y < __x;
}
template <class _Tp, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_SINCE_CXX20 bool
operator<=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
{
return !(__y < __x);
}
template <class _Tp, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_SINCE_CXX20 bool
operator>=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
{
return !(__x < __y);
}
template <class _Tp, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
__enable_if_t<_Size == 0 || __is_swappable<_Tp>::value, void>
swap(array<_Tp, _Size>& __x, array<_Tp, _Size>& __y)
_NOEXCEPT_(noexcept(__x.swap(__y)))
{
__x.swap(__y);
}
template <class _Tp, size_t _Size>
struct _LIBCPP_TEMPLATE_VIS tuple_size<array<_Tp, _Size> >
: public integral_constant<size_t, _Size> {};
template <size_t _Ip, class _Tp, size_t _Size>
struct _LIBCPP_TEMPLATE_VIS tuple_element<_Ip, array<_Tp, _Size> >
{
static_assert(_Ip < _Size, "Index out of bounds in std::tuple_element<> (std::array)");
typedef _Tp type;
};
template <size_t _Ip, class _Tp, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14
_Tp&
get(array<_Tp, _Size>& __a) _NOEXCEPT
{
static_assert(_Ip < _Size, "Index out of bounds in std::get<> (std::array)");
return __a.__elems_[_Ip];
}
template <size_t _Ip, class _Tp, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14
const _Tp&
get(const array<_Tp, _Size>& __a) _NOEXCEPT
{
static_assert(_Ip < _Size, "Index out of bounds in std::get<> (const std::array)");
return __a.__elems_[_Ip];
}
template <size_t _Ip, class _Tp, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14
_Tp&&
get(array<_Tp, _Size>&& __a) _NOEXCEPT
{
static_assert(_Ip < _Size, "Index out of bounds in std::get<> (std::array &&)");
return _VSTD::move(__a.__elems_[_Ip]);
}
template <size_t _Ip, class _Tp, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14
const _Tp&&
get(const array<_Tp, _Size>&& __a) _NOEXCEPT
{
static_assert(_Ip < _Size, "Index out of bounds in std::get<> (const std::array &&)");
return _VSTD::move(__a.__elems_[_Ip]);
}
#if _LIBCPP_STD_VER > 17
template <typename _Tp, size_t _Size, size_t... _Index>
_LIBCPP_INLINE_VISIBILITY constexpr array<remove_cv_t<_Tp>, _Size>
__to_array_lvalue_impl(_Tp (&__arr)[_Size], index_sequence<_Index...>) {
return {{__arr[_Index]...}};
}
template <typename _Tp, size_t _Size, size_t... _Index>
_LIBCPP_INLINE_VISIBILITY constexpr array<remove_cv_t<_Tp>, _Size>
__to_array_rvalue_impl(_Tp(&&__arr)[_Size], index_sequence<_Index...>) {
return {{_VSTD::move(__arr[_Index])...}};
}
template <typename _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY constexpr array<remove_cv_t<_Tp>, _Size>
to_array(_Tp (&__arr)[_Size]) noexcept(is_nothrow_constructible_v<_Tp, _Tp&>) {
static_assert(
!is_array_v<_Tp>,
"[array.creation]/1: to_array does not accept multidimensional arrays.");
static_assert(
is_constructible_v<_Tp, _Tp&>,
"[array.creation]/1: to_array requires copy constructible elements.");
return _VSTD::__to_array_lvalue_impl(__arr, make_index_sequence<_Size>());
}
template <typename _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY constexpr array<remove_cv_t<_Tp>, _Size>
to_array(_Tp(&&__arr)[_Size]) noexcept(is_nothrow_move_constructible_v<_Tp>) {
static_assert(
!is_array_v<_Tp>,
"[array.creation]/4: to_array does not accept multidimensional arrays.");
static_assert(
is_move_constructible_v<_Tp>,
"[array.creation]/4: to_array requires move constructible elements.");
return _VSTD::__to_array_rvalue_impl(_VSTD::move(__arr),
make_index_sequence<_Size>());
}
#endif // _LIBCPP_STD_VER > 17
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_ARRAY