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| 1 // tuple.hpp - Boost Tuple Library -------------------------------------- |
| 2 |
| 3 // Copyright (C) 1999, 2000 Jaakko Jarvi (jaakko.jarvi@cs.utu.fi) |
| 4 // |
| 5 // Distributed under the Boost Software License, Version 1.0. (See |
| 6 // accompanying file LICENSE_1_0.txt or copy at |
| 7 // http://www.boost.org/LICENSE_1_0.txt) |
| 8 |
| 9 // For more information, see http://www.boost.org |
| 10 |
| 11 // ----------------------------------------------------------------- |
| 12 |
| 13 #ifndef BOOST_TUPLE_HPP |
| 14 #define BOOST_TUPLE_HPP |
| 15 |
| 16 #if defined(__sgi) && defined(_COMPILER_VERSION) && _COMPILER_VERSION <= 730 |
| 17 // Work around a compiler bug. |
| 18 // boost::python::tuple has to be seen by the compiler before the |
| 19 // boost::tuple class template. |
| 20 namespace boost { namespace python { class tuple; }} |
| 21 #endif |
| 22 |
| 23 #include "boost/config.hpp" |
| 24 #include "boost/static_assert.hpp" |
| 25 |
| 26 #if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) |
| 27 // The MSVC version |
| 28 #include "boost/tuple/detail/tuple_basic_no_partial_spec.hpp" |
| 29 |
| 30 #else |
| 31 // other compilers |
| 32 #include "boost/ref.hpp" |
| 33 #include "boost/tuple/detail/tuple_basic.hpp" |
| 34 |
| 35 #endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
| 36 |
| 37 namespace boost { |
| 38 |
| 39 using tuples::tuple; |
| 40 using tuples::make_tuple; |
| 41 using tuples::tie; |
| 42 #if !defined(BOOST_NO_USING_TEMPLATE) |
| 43 using tuples::get; |
| 44 #elif !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) |
| 45 // |
| 46 // The "using tuples::get" statement causes the |
| 47 // Borland compiler to ICE, use forwarding |
| 48 // functions instead: |
| 49 // |
| 50 template<int N, class HT, class TT> |
| 51 inline typename tuples::access_traits< |
| 52 typename tuples::element<N, tuples::cons<HT, TT> >::type |
| 53 >::non_const_type |
| 54 get(tuples::cons<HT, TT>& c) { |
| 55 return tuples::get<N,HT,TT>(c); |
| 56 } |
| 57 // get function for const cons-lists, returns a const reference to |
| 58 // the element. If the element is a reference, returns the reference |
| 59 // as such (that is, can return a non-const reference) |
| 60 template<int N, class HT, class TT> |
| 61 inline typename tuples::access_traits< |
| 62 typename tuples::element<N, tuples::cons<HT, TT> >::type |
| 63 >::const_type |
| 64 get(const tuples::cons<HT, TT>& c) { |
| 65 return tuples::get<N,HT,TT>(c); |
| 66 } |
| 67 #else // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
| 68 // |
| 69 // MSVC, using declarations don't mix with templates well, |
| 70 // so use forwarding functions instead: |
| 71 // |
| 72 template<int N, typename Head, typename Tail> |
| 73 typename tuples::detail::element_ref<N, tuples::cons<Head, Tail> >::RET |
| 74 get(tuples::cons<Head, Tail>& t, tuples::detail::workaround_holder<N>* = 0) |
| 75 { |
| 76 return tuples::detail::get_class<N>::get(t); |
| 77 } |
| 78 |
| 79 template<int N, typename Head, typename Tail> |
| 80 typename tuples::detail::element_const_ref<N, tuples::cons<Head, Tail> >::RET |
| 81 get(const tuples::cons<Head, Tail>& t, tuples::detail::workaround_holder<N>* = 0
) |
| 82 { |
| 83 return tuples::detail::get_class<N>::get(t); |
| 84 } |
| 85 #endif // BOOST_NO_USING_TEMPLATE |
| 86 |
| 87 } // end namespace boost |
| 88 |
| 89 |
| 90 #endif // BOOST_TUPLE_HPP |
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