ceph/src/boost/libs/hana/test/experimental/types/at.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/at.hpp>
   7 #include <boost/hana/equal.hpp>
   8 #include <boost/hana/experimental/types.hpp>
   9 #include <boost/hana/type.hpp>
  10 namespace hana = boost::hana;
  11
  12
  13 template <int> struct x;
  14
  15 int main() {
  16     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  17         hana::at_c<0>(hana::experimental::types<x<0>>{}),
  18         hana::type_c<x<0>>
  19     ));
  20
  21     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  22         hana::at_c<0>(hana::experimental::types<x<0>, x<1>>{}),
  23         hana::type_c<x<0>>
  24     ));
  25     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  26         hana::at_c<1>(hana::experimental::types<x<0>, x<1>>{}),
  27         hana::type_c<x<1>>
  28     ));
  29
  30     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  31         hana::at_c<0>(hana::experimental::types<x<0>, x<1>, x<2>>{}),
  32         hana::type_c<x<0>>
  33     ));
  34     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  35         hana::at_c<1>(hana::experimental::types<x<0>, x<1>, x<2>>{}),
  36         hana::type_c<x<1>>
  37     ));
  38     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  39         hana::at_c<2>(hana::experimental::types<x<0>, x<1>, x<2>>{}),
  40         hana::type_c<x<2>>
  41     ));
  42
  43     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  44         hana::at_c<0>(hana::experimental::types<x<0>, x<1>, x<2>, x<3>>{}),
  45         hana::type_c<x<0>>
  46     ));
  47     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  48         hana::at_c<1>(hana::experimental::types<x<0>, x<1>, x<2>, x<3>>{}),
  49         hana::type_c<x<1>>
  50     ));
  51     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  52         hana::at_c<2>(hana::experimental::types<x<0>, x<1>, x<2>, x<3>>{}),
  53         hana::type_c<x<2>>
  54     ));
  55     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  56         hana::at_c<3>(hana::experimental::types<x<0>, x<1>, x<2>, x<3>>{}),
  57         hana::type_c<x<3>>
  58     ));
  59
  60     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  61         hana::at_c<0>(hana::experimental::types<x<0>, x<1>, x<2>, x<3>, x<4>>{}),
  62         hana::type_c<x<0>>
  63     ));
  64     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  65         hana::at_c<1>(hana::experimental::types<x<0>, x<1>, x<2>, x<3>, x<4>>{}),
  66         hana::type_c<x<1>>
  67     ));
  68     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  69         hana::at_c<2>(hana::experimental::types<x<0>, x<1>, x<2>, x<3>, x<4>>{}),
  70         hana::type_c<x<2>>
  71     ));
  72     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  73         hana::at_c<3>(hana::experimental::types<x<0>, x<1>, x<2>, x<3>, x<4>>{}),
  74         hana::type_c<x<3>>
  75     ));
  76     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  77         hana::at_c<4>(hana::experimental::types<x<0>, x<1>, x<2>, x<3>, x<4>>{}),
  78         hana::type_c<x<4>>
  79     ));
  80 }