libstdc++-v3/include/tr1/tuple_defs.h

   1 // class template tuple -*- C++ -*-
   2
   3 // Copyright (C) 2004, 2005 Free Software Foundation, Inc.
   4 //
   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)
   9 // any later version.
  10
  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.
  15
  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,
  19 // USA.
  20
  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.
  29
  30 /** @file tuple_defs.h
  31  *  This is an internal header file, included by other library headers.
  32  *  You should not attempt to use it directly.
  33  */
  34
  35 #ifndef _GLIBCXX_REPEAT_HEADER
  36 #  define _GLIBCXX_REPEAT_HEADER "tuple_defs.h"
  37 #  include "repeat.h"
  38 #  undef _GLIBCXX_REPEAT_HEADER
  39 #endif
  40
  41 #ifdef _GLIBCXX_LAST_INCLUDE
  42 // Chris Jefferson <chris@bubblescope.net>
  43    template<_GLIBCXX_TEMPLATE_PARAMS_NULL_CLASS> class tuple;
  44
  45    // Returns a const reference to the ith element of a tuple.
  46    // Any const or non-const ref elements are returned with their original type.
  47    template<int __i, _GLIBCXX_TEMPLATE_PARAMS>
  48    typename __add_ref<typename tuple_element<__i, tuple<_GLIBCXX_TEMPLATE_ARGS> >::type>::type
  49    get(tuple<_GLIBCXX_TEMPLATE_ARGS>& __t)
  50    {
  51      return __get_helper<__i, tuple<_GLIBCXX_TEMPLATE_ARGS> >::get_value(__t);
  52    }
  53
  54    template<int __i, _GLIBCXX_TEMPLATE_PARAMS>
  55    typename __add_c_ref<typename tuple_element<__i, tuple<_GLIBCXX_TEMPLATE_ARGS> >::type>::type
  56    get(const tuple<_GLIBCXX_TEMPLATE_ARGS>& __t)
  57    {
  58      return __get_helper<__i, tuple<_GLIBCXX_TEMPLATE_ARGS> >::get_value(__t);
  59    }
  60
  61  template<_GLIBCXX_TEMPLATE_PARAMS, _GLIBCXX_TEMPLATE_PARAMS_U>
  62  bool
  63  operator==(const tuple<_GLIBCXX_TEMPLATE_ARGS>& __t,
  64             const tuple<_GLIBCXX_TEMPLATE_ARGS_U>& __u)
  65  {
  66    typedef tuple<_GLIBCXX_TEMPLATE_ARGS> _Tp;
  67    typedef tuple<_GLIBCXX_TEMPLATE_ARGS_U> _Up;
  68    return __tuple_compare<tuple_size<_Tp>::value - tuple_size<_Tp>::value, 0,
  69                           tuple_size<_Tp>::value, _Tp, _Up>::__eq(__t, __u);
  70  }
  71
  72  template<_GLIBCXX_TEMPLATE_PARAMS, _GLIBCXX_TEMPLATE_PARAMS_U>
  73  bool
  74  operator<(const tuple<_GLIBCXX_TEMPLATE_ARGS>& __t,
  75            const tuple<_GLIBCXX_TEMPLATE_ARGS_U>& __u)
  76  {
  77    typedef tuple<_GLIBCXX_TEMPLATE_ARGS> _Tp;
  78    typedef tuple<_GLIBCXX_TEMPLATE_ARGS_U> _Up;
  79    return __tuple_compare<tuple_size<_Tp>::value - tuple_size<_Tp>::value, 0,
  80                           tuple_size<_Tp>::value, _Tp, _Up>::__less(__t, __u);
  81  }
  82
  83  template<_GLIBCXX_TEMPLATE_PARAMS, _GLIBCXX_TEMPLATE_PARAMS_U>
  84  bool
  85  operator!=(const tuple<_GLIBCXX_TEMPLATE_ARGS>& __t,
  86             const tuple<_GLIBCXX_TEMPLATE_ARGS_U>& __u)
  87  { return !(__t == __u); }
  88
  89  template<_GLIBCXX_TEMPLATE_PARAMS, _GLIBCXX_TEMPLATE_PARAMS_U>
  90  bool
  91  operator>(const tuple<_GLIBCXX_TEMPLATE_ARGS>& __t,
  92            const tuple<_GLIBCXX_TEMPLATE_ARGS_U>& __u)
  93  { return __u < __t; }
  94
  95  template<_GLIBCXX_TEMPLATE_PARAMS, _GLIBCXX_TEMPLATE_PARAMS_U>
  96  bool
  97  operator<=(const tuple<_GLIBCXX_TEMPLATE_ARGS>& __t,
  98             const tuple<_GLIBCXX_TEMPLATE_ARGS_U>& __u)
  99  { return !(__u < __t); }
 100
 101  template<_GLIBCXX_TEMPLATE_PARAMS, _GLIBCXX_TEMPLATE_PARAMS_U>
 102  bool
 103  operator>=(const tuple<_GLIBCXX_TEMPLATE_ARGS>& __t,
 104             const tuple<_GLIBCXX_TEMPLATE_ARGS_U>& __u)
 105  { return !(__t < __u); }
 106
 107  template<_GLIBCXX_TEMPLATE_PARAMS_NULL_CLASS>
 108    struct __stripped_tuple_type
 109    {
 110      typedef tuple<_GLIBCXX_TEMPLATE_ARGS_STRIPPED>      __type;
 111    };
 112
 113 #endif
 114