iLab Neuromorphic Robotics Toolkit  0.1
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TupleImpl.H
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1 /*! @file
2  @author Laurent Itti
3  @copyright GNU Public License (GPL v3)
4  @section License
5  @verbatim
6  // ////////////////////////////////////////////////////////////////////////
7  // The iLab Neuromorphic Robotics Toolkit (NRT) //
8  // Copyright 2010-2012 by the University of Southern California (USC) //
9  // and the iLab at USC. //
10  // //
11  // iLab - University of Southern California //
12  // Hedco Neurociences Building, Room HNB-10 //
13  // Los Angeles, Ca 90089-2520 - USA //
14  // //
15  // See http://ilab.usc.edu for information about this project. //
16  // ////////////////////////////////////////////////////////////////////////
17  // This file is part of The iLab Neuromorphic Robotics Toolkit. //
18  // //
19  // The iLab Neuromorphic Robotics Toolkit is free software: you can //
20  // redistribute it and/or modify it under the terms of the GNU General //
21  // Public License as published by the Free Software Foundation, either //
22  // version 3 of the License, or (at your option) any later version. //
23  // //
24  // The iLab Neuromorphic Robotics Toolkit is distributed in the hope //
25  // that it will be useful, but WITHOUT ANY WARRANTY; without even the //
26  // implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR //
27  // PURPOSE. See the GNU General Public License for more details. //
28  // //
29  // You should have received a copy of the GNU General Public License //
30  // along with The iLab Neuromorphic Robotics Toolkit. If not, see //
31  // <http://www.gnu.org/licenses/>. //
32  // ////////////////////////////////////////////////////////////////////////
33  @endverbatim */
34 
35 
36 #ifndef INCLUDE_NRT_CORE_TYPING_DETAILS_TUPLEIMPL_H
37 #define INCLUDE_NRT_CORE_TYPING_DETAILS_TUPLEIMPL_H
38 
39 #include <tuple>
40 
41 namespace nrt
42 {
43  // ######################################################################
44  template <typename Elem, typename Tupl, size_t i> inline
45  typename std::__add_ref<
46  typename std::enable_if<
47  std::is_same<Elem, typename std::tuple_element<i, Tupl>::type>::value, typename std::__add_ref<Elem>::type
48  >::type
49  >::type
50  tget(Tupl & t)
51  { return std::get<i>(t); }
52 
53  // ######################################################################
54  template <typename Elem, typename Tupl, size_t i = 0> inline
55  typename std::__add_ref<
56  typename std::enable_if<
57  ! std::is_same<Elem, typename std::tuple_element<i, Tupl>::type>::value, typename std::__add_ref<Elem>::type
58  >::type
59  >::type
60  tget(Tupl & t)
61  { return nrt::tget<Elem, Tupl, i+1>(t); }
62 
63  // ######################################################################
64  template <typename Elem, typename Tupl, size_t i> inline
65  typename std::__add_c_ref<
66  typename std::enable_if<
67  std::is_same<Elem, typename std::tuple_element<i, Tupl>::type>::value, typename std::__add_c_ref<Elem>::type
68  >::type
69  >::type
70  tget(Tupl const & t)
71  { return std::get<i>(t); }
72 
73  // ######################################################################
74  template <typename Elem, typename Tupl, size_t i = 0> inline
75  typename std::__add_c_ref<
76  typename std::enable_if<
77  ! std::is_same<Elem, typename std::tuple_element<i, Tupl>::type>::value, typename std::__add_c_ref<Elem>::type
78  >::type
79  >::type
80  tget(Tupl const & t)
81  { return nrt::tget<Elem, Tupl, i+1>(t); }
82 
83 } // namespace nrt
84 
85 #endif // INCLUDE_NRT_CORE_TYPING_DETAILS_TUPLEIMPL_H
86 
87