| // class template tuple -*- C++ -*- |
| |
| // Copyright (C) 2004, 2005 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 2, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING. If not, write to the Free |
| // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| // USA. |
| |
| // As a special exception, you may use this file as part of a free software |
| // library without restriction. Specifically, if other files instantiate |
| // templates or use macros or inline functions from this file, or you compile |
| // this file and link it with other files to produce an executable, this |
| // file does not by itself cause the resulting executable to be covered by |
| // the GNU General Public License. This exception does not however |
| // invalidate any other reasons why the executable file might be covered by |
| // the GNU General Public License. |
| |
| /** @file |
| * This is an internal header file, included by other library headers. |
| * You should not attempt to use it directly. |
| */ |
| |
| // Chris Jefferson <chris@bubblescope.net> |
| |
| /// @brief class tuple_size |
| template<_GLIBCXX_TEMPLATE_PARAMS> |
| struct tuple_size<tuple<_GLIBCXX_TEMPLATE_ARGS> > |
| { static const int value = _GLIBCXX_NUM_ARGS; }; |
| |
| template<_GLIBCXX_TEMPLATE_PARAMS> |
| #ifdef _GLIBCXX_LAST_INCLUDE |
| class tuple |
| #else |
| class tuple<_GLIBCXX_TEMPLATE_ARGS> |
| #endif |
| { |
| _GLIBCXX_BIND_MEMBERS |
| |
| public: |
| tuple() |
| { } |
| |
| #if _GLIBCXX_NUM_ARGS == 2 |
| template<class _U1, class _U2> |
| tuple(const std::pair<_U1, _U2>& __u): |
| _M_arg1(__u.first), _M_arg2(__u.second) |
| { } |
| |
| #endif |
| |
| #if _GLIBCXX_NUM_ARGS > 0 |
| explicit tuple(_GLIBCXX_TUPLE_ADD_CREF) : |
| _GLIBCXX_BIND_MEMBERS_INIT |
| { } |
| |
| template<_GLIBCXX_TEMPLATE_PARAMS_U> |
| tuple(const tuple<_GLIBCXX_TEMPLATE_ARGS_U>& __in) : |
| _GLIBCXX_TUPLE_COPY_INIT |
| { } |
| |
| |
| template<_GLIBCXX_TEMPLATE_PARAMS_U> |
| tuple& |
| operator=(const tuple<_GLIBCXX_TEMPLATE_ARGS_U>& __in) |
| { |
| _GLIBCXX_TUPLE_ASSIGN |
| return *this; |
| } |
| |
| tuple(const tuple& __in) : |
| _GLIBCXX_TUPLE_COPY_INIT |
| { } |
| |
| #else |
| |
| tuple(const tuple& __in) |
| { } |
| |
| #endif |
| |
| tuple& |
| operator=(const tuple& __in) |
| { |
| _GLIBCXX_TUPLE_ASSIGN |
| return *this; |
| } |
| |
| template<int __i, typename __Type> |
| friend class __get_helper; |
| |
| template<typename, typename, typename, typename, typename, |
| typename, typename, typename, typename, typename> |
| friend class tuple; |
| }; |
| |
| #ifndef _GLIBCXX_LAST_INCLUDE |
| |
| template<typename _Tp> |
| struct __get_helper<_GLIBCXX_NUM_ARGS, _Tp> |
| { |
| static typename __add_ref<typename tuple_element<_GLIBCXX_NUM_ARGS, |
| _Tp>::type>::type |
| get_value(_Tp& __in) |
| { return __in._GLIBCXX_CAT(_M_arg,_GLIBCXX_NUM_ARGS_PLUS_1); } |
| |
| static typename __add_c_ref<typename tuple_element<_GLIBCXX_NUM_ARGS, |
| _Tp>::type>::type |
| get_value(const _Tp& __in) |
| { return __in._GLIBCXX_CAT(_M_arg,_GLIBCXX_NUM_ARGS_PLUS_1); } |
| }; |
| |
| /// @brief class tuple_element |
| template<typename _T1, typename _T2, typename _T3, typename _T4, |
| typename _T5, typename _T6, typename _T7, typename _T8, |
| typename _T9, typename _T10> |
| struct tuple_element<_GLIBCXX_NUM_ARGS, tuple<_T1, _T2, _T3, _T4, |
| _T5, _T6, _T7, _T8, _T9, |
| _T10> > |
| { typedef _GLIBCXX_T_NUM_ARGS_PLUS_1 type; }; |
| |
| #endif |
| #if _GLIBCXX_NUM_ARGS == 0 |
| |
| tuple<> |
| inline make_tuple() |
| { return tuple<>(); } |
| |
| inline tuple<> |
| tie() |
| { return tuple<>(); } |
| #else |
| |
| template<_GLIBCXX_TEMPLATE_PARAMS> |
| typename __stripped_tuple_type<_GLIBCXX_TEMPLATE_ARGS>::__type |
| make_tuple(_GLIBCXX_PARAMS) |
| { |
| return typename __stripped_tuple_type<_GLIBCXX_TEMPLATE_ARGS>:: |
| __type(_GLIBCXX_ARGS); |
| } |
| |
| template<_GLIBCXX_TEMPLATE_PARAMS> |
| tuple<_GLIBCXX_REF_TEMPLATE_ARGS> |
| tie(_GLIBCXX_REF_PARAMS) |
| { return make_tuple(_GLIBCXX_REF_WRAP_PARAMS); } |
| #endif |
| |