v1/__tuple/tuple_indices.h

0001 //===----------------------------------------------------------------------===//
0002 //
0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0004 // See https://llvm.org/LICENSE.txt for license information.
0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0006 //
0007 //===----------------------------------------------------------------------===//
0008
0009 #ifndef _LIBCPP___TUPLE_MAKE_TUPLE_INDICES_H
0010 #define _LIBCPP___TUPLE_MAKE_TUPLE_INDICES_H
0011
0012 #include <__config>
0013 #include <__cstddef/size_t.h>
0014 #include <__utility/integer_sequence.h>
0015
0016 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
0017 #  pragma GCC system_header
0018 #endif
0019
0020 #ifndef _LIBCPP_CXX03_LANG
0021
0022 _LIBCPP_BEGIN_NAMESPACE_STD
0023
0024 template <size_t...>
0025 struct __tuple_indices {};
0026
0027 template <size_t _Ep, size_t _Sp = 0>
0028 struct __make_tuple_indices {
0029   static_assert(_Sp <= _Ep, "__make_tuple_indices input error");
0030   typedef __make_indices_imp<_Ep, _Sp> type;
0031 };
0032
0033 _LIBCPP_END_NAMESPACE_STD
0034
0035 #endif // _LIBCPP_CXX03_LANG
0036
0037 #endif // _LIBCPP___TUPLE_MAKE_TUPLE_INDICES_H