ceph/src/boost/libs/hana/test/tuple/assign.convert_move.cpp

   1 // Copyright Louis Dionne 2013-2016
   2 // Distributed under the Boost Software License, Version 1.0.
   3 // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
   4
   5 #include <boost/hana/assert.hpp>
   6 #include <boost/hana/tuple.hpp>
   7
   8 #include <memory>
   9 #include <utility>
  10 namespace hana = boost::hana;
  11
  12
  13 struct B {
  14     int id_;
  15     explicit B(int i = 0) : id_(i) {}
  16     virtual ~B() {}
  17 };
  18
  19 struct D : B {
  20     explicit D(int i) : B(i) {}
  21 };
  22
  23 int main() {
  24     {
  25         using T0 = hana::tuple<double>;
  26         using T1 = hana::tuple<int>;
  27         T0 t0(2.5);
  28         T1 t1;
  29         t1 = std::move(t0);
  30         BOOST_HANA_RUNTIME_CHECK(hana::at_c<0>(t1) == 2);
  31     }
  32     {
  33         using T0 = hana::tuple<double, char>;
  34         using T1 = hana::tuple<int, int>;
  35         T0 t0(2.5, 'a');
  36         T1 t1;
  37         t1 = std::move(t0);
  38         BOOST_HANA_RUNTIME_CHECK(hana::at_c<0>(t1) == 2);
  39         BOOST_HANA_RUNTIME_CHECK(hana::at_c<1>(t1) == int('a'));
  40     }
  41     {
  42         using T0 = hana::tuple<double, char, D>;
  43         using T1 = hana::tuple<int, int, B>;
  44         T0 t0(2.5, 'a', D(3));
  45         T1 t1;
  46         t1 = std::move(t0);
  47         BOOST_HANA_RUNTIME_CHECK(hana::at_c<0>(t1) == 2);
  48         BOOST_HANA_RUNTIME_CHECK(hana::at_c<1>(t1) == int('a'));
  49         BOOST_HANA_RUNTIME_CHECK(hana::at_c<2>(t1).id_ == 3);
  50     }
  51     {
  52         D d(3);
  53         D d2(2);
  54         using T0 = hana::tuple<double, char, D&>;
  55         using T1 = hana::tuple<int, int, B&>;
  56         T0 t0(2.5, 'a', d2);
  57         T1 t1(1.5, 'b', d);
  58         t1 = std::move(t0);
  59         BOOST_HANA_RUNTIME_CHECK(hana::at_c<0>(t1) == 2);
  60         BOOST_HANA_RUNTIME_CHECK(hana::at_c<1>(t1) == int('a'));
  61         BOOST_HANA_RUNTIME_CHECK(hana::at_c<2>(t1).id_ == 2);
  62     }
  63     {
  64         using T0 = hana::tuple<double, char, std::unique_ptr<D>>;
  65         using T1 = hana::tuple<int, int, std::unique_ptr<B>>;
  66         T0 t0(2.5, 'a', std::unique_ptr<D>(new D(3)));
  67         T1 t1;
  68         t1 = std::move(t0);
  69         BOOST_HANA_RUNTIME_CHECK(hana::at_c<0>(t1) == 2);
  70         BOOST_HANA_RUNTIME_CHECK(hana::at_c<1>(t1) == int('a'));
  71         BOOST_HANA_RUNTIME_CHECK(hana::at_c<2>(t1)->id_ == 3);
  72     }
  73 }