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 <type_traits>
  15 #include <tuple>
  16
  17 struct X1 {};
  18 struct X2 {};
  19 struct X3 {};
  20 struct X4 {};
  21 struct X5 {};
  22 struct X6 {};
  23 struct X7 {};
  24 struct X8 {};
  25 struct X9 {};
  26 struct X10 {};
  27 struct X11 {};
  28 struct X12 {};
  29
  30 using boost::mp11::mp_plus;
  31
  32 int main()
  33 {
  34     using boost::mp11::mp_list;
  35     using boost::mp11::mp_reverse;
  36
  37     {
  38         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<>>, mp_list<>>));
  39         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<X1>>, mp_list<X1>>));
  40         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<X1, X2>>, mp_list<X2, X1>>));
  41         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<X1, X2, X3>>, mp_list<X3, X2, X1>>));
  42         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<X1, X2, X3, X4>>, mp_list<X4, X3, X2, X1>>));
  43         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<mp_list<X1, X2, X3, X4, X5>>, mp_list<X5, X4, X3, X2, X1>>));
  44         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>>));
  45         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>>));
  46         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>>));
  47         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>>));
  48         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>>));
  49         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>>));
  50         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>>));
  51     }
  52
  53     {
  54         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<>>, std::tuple<>>));
  55         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<X1>>, std::tuple<X1>>));
  56         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<X1, X2>>, std::tuple<X2, X1>>));
  57         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<X1, X2, X3>>, std::tuple<X3, X2, X1>>));
  58         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<X1, X2, X3, X4>>, std::tuple<X4, X3, X2, X1>>));
  59         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::tuple<X1, X2, X3, X4, X5>>, std::tuple<X5, X4, X3, X2, X1>>));
  60         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>>));
  61         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>>));
  62         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>>));
  63         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>>));
  64         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>>));
  65         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>>));
  66         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>>));
  67     }
  68
  69     {
  70         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse<std::pair<X1, X2>>, std::pair<X2, X1>>));
  71     }
  72
  73     using boost::mp11::mp_iota_c;
  74     using boost::mp11::mp_size_t;
  75     using boost::mp11::mp_transform;
  76     using boost::mp11::mp_fill;
  77
  78     {
  79         int const N = 37;
  80
  81         using L = mp_iota_c<N>;
  82
  83         using R1 = mp_reverse<L>;
  84         using R2 = mp_reverse<R1>;
  85
  86         BOOST_TEST_TRAIT_TRUE((std::is_same<R2, L>));
  87
  88         using R3 = mp_transform<mp_plus, R1, R2>;
  89
  90         BOOST_TEST_TRAIT_TRUE((std::is_same<R3, mp_fill<L, mp_size_t<N-1>>>));
  91     }
  92
  93     return boost::report_errors();
  94 }