boost/tr1/tuple.hpp

   1 //  (C) Copyright John Maddock 2005.
   2 //  Use, modification and distribution are subject to the
   3 //  Boost Software License, Version 1.0. (See accompanying file
   4 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #ifndef BOOST_TR1_TUPLE_HPP_INCLUDED
   7 #  define BOOST_TR1_TUPLE_HPP_INCLUDED
   8 #  include <boost/tr1/detail/config.hpp>
   9
  10 #ifdef BOOST_HAS_TR1_TUPLE
  11
  12 #  ifdef BOOST_HAS_INCLUDE_NEXT
  13 #     include_next BOOST_TR1_HEADER(tuple)
  14 #  else
  15 #     include <boost/tr1/detail/config_all.hpp>
  16 #     include BOOST_TR1_STD_HEADER(BOOST_TR1_PATH(tuple))
  17 #  endif
  18
  19 #else
  20
  21 #if defined(BOOST_TR1_USE_OLD_TUPLE)
  22
  23 #include <boost/tuple/tuple.hpp>
  24 #include <boost/tuple/tuple_comparison.hpp>
  25 #include <boost/type_traits/integral_constant.hpp>
  26
  27 namespace std{ namespace tr1{
  28
  29 using ::boost::tuple;
  30
  31 // [6.1.3.2] Tuple creation functions
  32 using ::boost::tuples::ignore;
  33 using ::boost::make_tuple;
  34 using ::boost::tie;
  35
  36 // [6.1.3.3] Tuple helper classes
  37 template <class T>
  38 struct tuple_size
  39    : public ::boost::integral_constant
  40    < ::std::size_t, ::boost::tuples::length<T>::value>
  41 {};
  42
  43 template < int I, class T>
  44 struct tuple_element
  45 {
  46    typedef typename boost::tuples::element<I,T>::type type;
  47 };
  48
  49 #if !BOOST_WORKAROUND(__BORLANDC__, < 0x0582)
  50 // [6.1.3.4] Element access
  51 using ::boost::get;
  52 #endif
  53
  54 } } // namespaces
  55
  56 #else
  57
  58 #include <boost/fusion/include/tuple.hpp>
  59 #include <boost/fusion/include/std_pair.hpp>
  60
  61 namespace std{ namespace tr1{
  62
  63 using ::boost::fusion::tuple;
  64
  65 // [6.1.3.2] Tuple creation functions
  66 using ::boost::fusion::ignore;
  67 using ::boost::fusion::make_tuple;
  68 using ::boost::fusion::tie;
  69 using ::boost::fusion::get;
  70
  71 // [6.1.3.3] Tuple helper classes
  72 using ::boost::fusion::tuple_size;
  73 using ::boost::fusion::tuple_element;
  74
  75 }}
  76
  77 #endif
  78
  79 #endif
  80
  81 #endif
  82