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 <cstddef> 15 #include <initializer_list> 16 17 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 18 # pragma GCC system_header 19 #endif 20 21 _LIBCPP_BEGIN_NAMESPACE_STD 22 23 #if _LIBCPP_STD_VER >= 17 24 25 template <class _Cont> constexpr 26 _LIBCPP_INLINE_VISIBILITY 27 auto data(_Cont& __c) 28 _NOEXCEPT_(noexcept(__c.data())) 29 -> decltype (__c.data()) 30 { return __c.data(); } 31 32 template <class _Cont> constexpr 33 _LIBCPP_INLINE_VISIBILITY 34 auto data(const _Cont& __c) 35 _NOEXCEPT_(noexcept(__c.data())) 36 -> decltype (__c.data()) 37 { return __c.data(); } 38 39 template <class _Tp, size_t _Sz> 40 _LIBCPP_INLINE_VISIBILITY 41 constexpr _Tp* data(_Tp (&__array)[_Sz]) noexcept { return __array; } 42 43 template <class _Ep> 44 _LIBCPP_INLINE_VISIBILITY 45 constexpr const _Ep* data(initializer_list<_Ep> __il) noexcept { return __il.begin(); } 46 47 #endif 48 49 _LIBCPP_END_NAMESPACE_STD 50 51 #endif // _LIBCPP___ITERATOR_DATA_H 52