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

   1
   2 //  Copyright 2015 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/core/lightweight_test_trait.hpp>
  13 #include <type_traits>
  14 #include <tuple>
  15 #include <utility>
  16
  17 struct X1 {};
  18 struct X2 {};
  19 struct X3 {};
  20
  21 int main()
  22 {
  23     using boost::mp11::mp_list;
  24     using boost::mp11::mp_replace;
  25
  26     {
  27         using L1 = mp_list<>;
  28
  29         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace<L1, void, int[]>, L1>));
  30
  31         using L2 = mp_list<X1, X2, X3, X2, X3, X3>;
  32
  33         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace<L2, void, int[]>, L2>));
  34         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace<L2, X1, int[]>, mp_list<int[], X2, X3, X2, X3, X3>>));
  35         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace<L2, X2, int[]>, mp_list<X1, int[], X3, int[], X3, X3>>));
  36         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace<L2, X3, int[]>, mp_list<X1, X2, int[], X2, int[], int[]>>));
  37     }
  38
  39     {
  40         using L1 = std::tuple<>;
  41
  42         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace<L1, void, int[]>, L1>));
  43
  44         using L2 = std::tuple<X1, X2, X3, X2, X3, X3>;
  45
  46         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace<L2, void, int[]>, L2>));
  47         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace<L2, X1, int[]>, std::tuple<int[], X2, X3, X2, X3, X3>>));
  48         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace<L2, X2, int[]>, std::tuple<X1, int[], X3, int[], X3, X3>>));
  49         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace<L2, X3, int[]>, std::tuple<X1, X2, int[], X2, int[], int[]>>));
  50     }
  51
  52     {
  53         using L2 = std::pair<X1, X2>;
  54
  55         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace<L2, void, int[]>, L2>));
  56         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace<L2, X1, int[]>, std::pair<int[], X2>>));
  57         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace<L2, X2, int[]>, std::pair<X1, int[]>>));
  58     }
  59
  60     return boost::report_errors();
  61 }