1 // class template tuple -*- C++ -*-
3 // Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 2, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING. If not, write to the Free
18 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
21 // As a special exception, you may use this file as part of a free software
22 // library without restriction. Specifically, if other files instantiate
23 // templates or use macros or inline functions from this file, or you compile
24 // this file and link it with other files to produce an executable, this
25 // file does not by itself cause the resulting executable to be covered by
26 // the GNU General Public License. This exception does not however
27 // invalidate any other reasons why the executable file might be covered by
28 // the GNU General Public License.
30 /** @file tr1/tuple_iterate.h
31 * This is an internal header file, included by other library headers.
32 * You should not attempt to use it directly.
35 // Chris Jefferson <chris@bubblescope.net>
39 _GLIBCXX_BEGIN_NAMESPACE(tr1)
41 /// @brief class tuple_size
42 template<_GLIBCXX_TEMPLATE_PARAMS>
43 struct tuple_size<tuple<_GLIBCXX_TEMPLATE_ARGS> >
44 { static const int value = _GLIBCXX_NUM_ARGS; };
46 #if _GLIBCXX_NUM_ARGS > 0
47 template<_GLIBCXX_TEMPLATE_PARAMS>
48 const int tuple_size<tuple<_GLIBCXX_TEMPLATE_ARGS> >::value;
51 template<_GLIBCXX_TEMPLATE_PARAMS>
52 #ifdef _GLIBCXX_LAST_INCLUDE
55 class tuple<_GLIBCXX_TEMPLATE_ARGS>
64 #if _GLIBCXX_NUM_ARGS == 2
65 template<typename _U1, typename _U2>
66 tuple(const std::pair<_U1, _U2>& __u) :
67 _M_arg1(__u.first), _M_arg2(__u.second)
70 template<typename _U1, typename _U2>
72 operator=(const std::pair<_U1, _U2>& __u)
80 #if _GLIBCXX_NUM_ARGS > 0
81 explicit tuple(_GLIBCXX_TUPLE_ADD_CREF) :
82 _GLIBCXX_BIND_MEMBERS_INIT
85 template<_GLIBCXX_TEMPLATE_PARAMS_U>
86 tuple(const tuple<_GLIBCXX_TEMPLATE_ARGS_U>& __in) :
87 _GLIBCXX_TUPLE_COPY_INIT
91 template<_GLIBCXX_TEMPLATE_PARAMS_U>
93 operator=(const tuple<_GLIBCXX_TEMPLATE_ARGS_U>& __in)
99 tuple(const tuple& __in) :
100 _GLIBCXX_TUPLE_COPY_INIT
111 operator=(const tuple& __in __attribute__((__unused__)) )
113 _GLIBCXX_TUPLE_ASSIGN
117 template<int __i, typename __Type>
118 friend class __get_helper;
120 template<_GLIBCXX_TUPLE_ALL_TEMPLATE_PARAMS_UNNAMED>
124 #ifndef _GLIBCXX_LAST_INCLUDE
126 template<typename _Tp>
127 struct __get_helper<_GLIBCXX_NUM_ARGS, _Tp>
129 static typename __add_ref<typename tuple_element<_GLIBCXX_NUM_ARGS,
132 { return __in._GLIBCXX_CAT(_M_arg,_GLIBCXX_NUM_ARGS_PLUS_1); }
134 static typename __add_c_ref<typename tuple_element<_GLIBCXX_NUM_ARGS,
136 get_value(const _Tp& __in)
137 { return __in._GLIBCXX_CAT(_M_arg,_GLIBCXX_NUM_ARGS_PLUS_1); }
140 /// @brief class tuple_element
141 template<_GLIBCXX_TUPLE_ALL_TEMPLATE_PARAMS>
142 struct tuple_element<_GLIBCXX_NUM_ARGS, tuple<_GLIBCXX_TUPLE_ALL_TEMPLATE_ARGS> >
143 { typedef _GLIBCXX_T_NUM_ARGS_PLUS_1 type; };
146 #if _GLIBCXX_NUM_ARGS == 0
150 { return tuple<>(); }
154 { return tuple<>(); }
157 template<_GLIBCXX_TEMPLATE_PARAMS>
158 typename __stripped_tuple_type<_GLIBCXX_TEMPLATE_ARGS>::__type
159 inline make_tuple(_GLIBCXX_PARAMS)
161 return typename __stripped_tuple_type<_GLIBCXX_TEMPLATE_ARGS>::
162 __type(_GLIBCXX_ARGS);
165 template<_GLIBCXX_TEMPLATE_PARAMS>
166 tuple<_GLIBCXX_REF_TEMPLATE_ARGS>
167 inline tie(_GLIBCXX_REF_PARAMS)
168 { return make_tuple(_GLIBCXX_REF_WRAP_PARAMS); }
171 _GLIBCXX_END_NAMESPACE