1fe6060f1SDimitry Andric // -*- C++ -*- 2349cc55cSDimitry Andric //===----------------------------------------------------------------------===// 3fe6060f1SDimitry Andric // 4fe6060f1SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5fe6060f1SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 6fe6060f1SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7fe6060f1SDimitry Andric // 8fe6060f1SDimitry Andric //===----------------------------------------------------------------------===// 9fe6060f1SDimitry Andric 10fe6060f1SDimitry Andric #ifndef _LIBCPP___RANGES_ENABLE_BORROWED_RANGE_H 11fe6060f1SDimitry Andric #define _LIBCPP___RANGES_ENABLE_BORROWED_RANGE_H 12fe6060f1SDimitry Andric 13fe6060f1SDimitry Andric // These customization variables are used in <span> and <string_view>. The 14fe6060f1SDimitry Andric // separate header is used to avoid including the entire <ranges> header in 15fe6060f1SDimitry Andric // <span> and <string_view>. 16fe6060f1SDimitry Andric 17fe6060f1SDimitry Andric #include <__config> 18fe6060f1SDimitry Andric 19fe6060f1SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 20fe6060f1SDimitry Andric # pragma GCC system_header 21fe6060f1SDimitry Andric #endif 22fe6060f1SDimitry Andric 23fe6060f1SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 24fe6060f1SDimitry Andric 25*06c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 20 26fe6060f1SDimitry Andric 27d56accc7SDimitry Andric namespace ranges { 28fe6060f1SDimitry Andric 29fe6060f1SDimitry Andric // [range.range], ranges 30fe6060f1SDimitry Andric 31fe6060f1SDimitry Andric template <class> 32fe6060f1SDimitry Andric inline constexpr bool enable_borrowed_range = false; 33fe6060f1SDimitry Andric 34fe6060f1SDimitry Andric } // namespace ranges 35fe6060f1SDimitry Andric 36*06c3fb27SDimitry Andric #endif // _LIBCPP_STD_VER >= 20 37fe6060f1SDimitry Andric 38fe6060f1SDimitry Andric _LIBCPP_END_NAMESPACE_STD 39fe6060f1SDimitry Andric 40fe6060f1SDimitry Andric #endif // _LIBCPP___RANGES_ENABLE_BORROWED_RANGE_H 41