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___ITERATOR_DATA_H
11#define _LIBCPP___ITERATOR_DATA_H
12
13#include <__config>
14#include <initializer_list>
15
16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
17# pragma GCC system_header
18#endif
19
20#if _LIBCPP_STD_VER >= 17
21
22_LIBCPP_BEGIN_NAMESPACE_STD
23
24template <class _Cont>
25[[nodiscard]] constexpr _LIBCPP_HIDE_FROM_ABI auto data(_Cont& __c) noexcept(noexcept(__c.data()))
26 -> decltype(__c.data()) {
27 return __c.data();
28}
29
30template <class _Cont>
31[[nodiscard]] constexpr _LIBCPP_HIDE_FROM_ABI auto data(const _Cont& __c) noexcept(noexcept(__c.data()))
32 -> decltype(__c.data()) {
33 return __c.data();
34}
35
36template <class _Tp, size_t _Sz>
37[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Tp* data(_Tp (&__array)[_Sz]) noexcept {
38 return __array;
39}
40
41template <class _Ep>
42[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr const _Ep* data(initializer_list<_Ep> __il) noexcept {
43 return __il.begin();
44}
45
46_LIBCPP_END_NAMESPACE_STD
47
48#endif // _LIBCPP_STD_VER >= 17
49
50#endif // _LIBCPP___ITERATOR_DATA_H
51