ceph/src/boost/libs/mp11/test/mp_reverse.cpp

   1
   2 // Copyright 2015-2017 Peter Dimov.
   3 //
   4 // Distributed under the Boost Software License, Version 1.0.
   5 //
   6 // See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt
   8
   9
  10 #include <boost/mp11/algorithm.hpp>
  11 #include <boost/mp11/list.hpp>
  12 #include <boost/mp11/integral.hpp>
  13 #include <boost/core/lightweight_test_trait.hpp>
  14 #include <boost/config.hpp>
  15 #include <boost/detail/workaround.hpp>
  16 #include <type_traits>
  17 #include <tuple>
  18
  19 struct X1 {};
  20 struct X2 {};
  21 struct X3 {};
  22 struct X4 {};
  23 struct X5 {};
  24 struct X6 {};
  25 struct X7 {};
  26 struct X8 {};
  27 struct X9 {};
  28 struct X10 {};
  29 struct X11 {};
  30 struct X12 {};
  31
  32 using boost::mp11::mp_plus;
  33
  34 int main()
  35 {
  36     using boost::mp11::mp_list;
  37     using boost::mp11::mp_reverse;
  38
  39     {
  40         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<>>, mp_list<>>));
  41         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<X1>>, mp_list<X1>>));
  42         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<X1, X2>>, mp_list<X2, X1>>));
  43         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<X1, X2, X3>>, mp_list<X3, X2, X1>>));
  44         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<X1, X2, X3, X4>>, mp_list<X4, X3, X2, X1>>));
  45         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<X1, X2, X3, X4, X5>>, mp_list<X5, X4, X3, X2, X1>>));
  46         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<X1, X2, X3, X4, X5, X6>>, mp_list<X6, X5, X4, X3, X2, X1>>));
  47         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<X1, X2, X3, X4, X5, X6, X7>>, mp_list<X7, X6, X5, X4, X3, X2, X1>>));
  48         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<X1, X2, X3, X4, X5, X6, X7, X8>>, mp_list<X8, X7, X6, X5, X4, X3, X2, X1>>));
  49         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<X1, X2, X3, X4, X5, X6, X7, X8, X9>>, mp_list<X9, X8, X7, X6, X5, X4, X3, X2, X1>>));
  50         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<X1, X2, X3, X4, X5, X6, X7, X8, X9, X10>>, mp_list<X10, X9, X8, X7, X6, X5, X4, X3, X2, X1>>));
  51         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11>>, mp_list<X11, X10, X9, X8, X7, X6, X5, X4, X3, X2, X1>>));
  52         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12>>, mp_list<X12, X11, X10, X9, X8, X7, X6, X5, X4, X3, X2, X1>>));
  53     }
  54
  55     {
  56         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<>>, std::tuple<>>));
  57         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<X1>>, std::tuple<X1>>));
  58         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<X1, X2>>, std::tuple<X2, X1>>));
  59         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<X1, X2, X3>>, std::tuple<X3, X2, X1>>));
  60         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<X1, X2, X3, X4>>, std::tuple<X4, X3, X2, X1>>));
  61         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<X1, X2, X3, X4, X5>>, std::tuple<X5, X4, X3, X2, X1>>));
  62         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<X1, X2, X3, X4, X5, X6>>, std::tuple<X6, X5, X4, X3, X2, X1>>));
  63         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<X1, X2, X3, X4, X5, X6, X7>>, std::tuple<X7, X6, X5, X4, X3, X2, X1>>));
  64         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<X1, X2, X3, X4, X5, X6, X7, X8>>, std::tuple<X8, X7, X6, X5, X4, X3, X2, X1>>));
  65         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<X1, X2, X3, X4, X5, X6, X7, X8, X9>>, std::tuple<X9, X8, X7, X6, X5, X4, X3, X2, X1>>));
  66         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<X1, X2, X3, X4, X5, X6, X7, X8, X9, X10>>, std::tuple<X10, X9, X8, X7, X6, X5, X4, X3, X2, X1>>));
  67         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11>>, std::tuple<X11, X10, X9, X8, X7, X6, X5, X4, X3, X2, X1>>));
  68         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12>>, std::tuple<X12, X11, X10, X9, X8, X7, X6, X5, X4, X3, X2, X1>>));
  69     }
  70
  71     {
  72         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::pair<X1, X2>>, std::pair<X2, X1>>));
  73     }
  74
  75     using boost::mp11::mp_iota_c;
  76     using boost::mp11::mp_size_t;
  77     using boost::mp11::mp_transform;
  78     using boost::mp11::mp_fill;
  79
  80     {
  81         int const N = 37;
  82
  83         using L = mp_iota_c<N>;
  84
  85         using R1 = mp_reverse<L>;
  86         using R2 = mp_reverse<R1>;
  87
  88         BOOST_TEST_TRAIT_TRUE((std::is_same<R2, L>));
  89
  90         using R3 = mp_transform<mp_plus, R1, R2>;
  91
  92         BOOST_TEST_TRAIT_TRUE((std::is_same<R3, mp_fill<L, mp_size_t<N-1>>>));
  93     }
  94
  95     return boost::report_errors();
  96 }