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 _LIBCPP_BEGIN_NAMESPACE_STD 21 22 #if _LIBCPP_STD_VER >= 17 23 24 template <class _Cont> 25 constexpr _LIBCPP_HIDE_FROM_ABI auto data(_Cont& __c) noexcept(noexcept(__c.data())) -> decltype(__c.data()) { 26 return __c.data(); 27 } 28 29 template <class _Cont> 30 constexpr _LIBCPP_HIDE_FROM_ABI auto data(const _Cont& __c) noexcept(noexcept(__c.data())) -> decltype(__c.data()) { 31 return __c.data(); 32 } 33 34 template <class _Tp, size_t _Sz> 35 _LIBCPP_HIDE_FROM_ABI constexpr _Tp* data(_Tp (&__array)[_Sz]) noexcept { 36 return __array; 37 } 38 39 template <class _Ep> 40 _LIBCPP_HIDE_FROM_ABI constexpr const _Ep* data(initializer_list<_Ep> __il) noexcept { 41 return __il.begin(); 42 } 43 44 #endif 45 46 _LIBCPP_END_NAMESPACE_STD 47 48 #endif // _LIBCPP___ITERATOR_DATA_H 49