libcxx/include/__fwd/tuple.h

   1 //===---------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===---------------------------------------------------------------------===//
   8
   9 #ifndef _LIBCPP___FWD_TUPLE_H
  10 #define _LIBCPP___FWD_TUPLE_H
  11
  12 #include <__config>
  13 #include <__cstddef/size_t.h>
  14
  15 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  16 #  pragma GCC system_header
  17 #endif
  18
  19 _LIBCPP_BEGIN_NAMESPACE_STD
  20
  21 template <size_t, class>
  22 struct _LIBCPP_TEMPLATE_VIS tuple_element;
  23
  24 #ifndef _LIBCPP_CXX03_LANG
  25
  26 template <class...>
  27 class _LIBCPP_TEMPLATE_VIS tuple;
  28
  29 template <class>
  30 struct _LIBCPP_TEMPLATE_VIS tuple_size;
  31
  32 template <size_t _Ip, class... _Tp>
  33 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 typename tuple_element<_Ip, tuple<_Tp...> >::type&
  34 get(tuple<_Tp...>&) _NOEXCEPT;
  35
  36 template <size_t _Ip, class... _Tp>
  37 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const typename tuple_element<_Ip, tuple<_Tp...> >::type&
  38 get(const tuple<_Tp...>&) _NOEXCEPT;
  39
  40 template <size_t _Ip, class... _Tp>
  41 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 typename tuple_element<_Ip, tuple<_Tp...> >::type&&
  42 get(tuple<_Tp...>&&) _NOEXCEPT;
  43
  44 template <size_t _Ip, class... _Tp>
  45 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const typename tuple_element<_Ip, tuple<_Tp...> >::type&&
  46 get(const tuple<_Tp...>&&) _NOEXCEPT;
  47
  48 #endif // _LIBCPP_CXX03_LANG
  49
  50 _LIBCPP_END_NAMESPACE_STD
  51
  52 #endif // _LIBCPP___FWD_TUPLE_H