xref: /freebsd-src/contrib/llvm-project/libcxx/include/__format/enable_insertable.h (revision 06c3fb2749bda94cb5201f81ffdb8fa6c3161b2e)
181ad6265SDimitry Andric // -*- C++ -*-
281ad6265SDimitry Andric //===----------------------------------------------------------------------===//
381ad6265SDimitry Andric //
481ad6265SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
581ad6265SDimitry Andric // See https://llvm.org/LICENSE.txt for license information.
681ad6265SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
781ad6265SDimitry Andric //
881ad6265SDimitry Andric //===----------------------------------------------------------------------===//
981ad6265SDimitry Andric 
1081ad6265SDimitry Andric #ifndef _LIBCPP___FORMAT_ENABLE_INSERTABLE_H
1181ad6265SDimitry Andric #define _LIBCPP___FORMAT_ENABLE_INSERTABLE_H
1281ad6265SDimitry Andric 
1381ad6265SDimitry Andric #include <__config>
1481ad6265SDimitry Andric 
1581ad6265SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
1681ad6265SDimitry Andric #  pragma GCC system_header
1781ad6265SDimitry Andric #endif
1881ad6265SDimitry Andric 
1981ad6265SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD
2081ad6265SDimitry Andric 
21*06c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 20
2281ad6265SDimitry Andric 
2381ad6265SDimitry Andric namespace __format {
2481ad6265SDimitry Andric 
2581ad6265SDimitry Andric /// Opt-in to enable \ref __insertable for a \a _Container.
2681ad6265SDimitry Andric template <class _Container>
2781ad6265SDimitry Andric inline constexpr bool __enable_insertable = false;
2881ad6265SDimitry Andric 
2981ad6265SDimitry Andric } // namespace __format
3081ad6265SDimitry Andric 
31*06c3fb27SDimitry Andric #endif //_LIBCPP_STD_VER >= 20
3281ad6265SDimitry Andric 
3381ad6265SDimitry Andric _LIBCPP_END_NAMESPACE_STD
3481ad6265SDimitry Andric 
3581ad6265SDimitry Andric #endif // _LIBCPP___FORMAT_ENABLE_INSERTABLE_H
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