ceph/src/boost/libs/hana/test/detail/type_foldl1.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/detail/type_foldl1.hpp>
   6
   7 #include <type_traits>
   8 namespace hana = boost::hana;
   9
  10
  11 template <typename state, typename x>
  12 struct f {
  13     struct type;
  14 };
  15
  16 template <int>
  17 struct x;
  18
  19 static_assert(std::is_same<
  20     hana::detail::type_foldl1<f, x<0>>::type,
  21     x<0>
  22 >{}, "");
  23
  24 static_assert(std::is_same<
  25     hana::detail::type_foldl1<f, x<0>, x<1>>::type,
  26     f<x<0>, x<1>>::type
  27 >{}, "");
  28
  29 static_assert(std::is_same<
  30     hana::detail::type_foldl1<f, x<0>, x<1>, x<2>>::type,
  31     f<f<x<0>, x<1>>::type, x<2>>::type
  32 >{}, "");
  33
  34 static_assert(std::is_same<
  35     hana::detail::type_foldl1<f, x<0>, x<1>, x<2>, x<3>>::type,
  36     f<f<f<x<0>, x<1>>::type, x<2>>::type, x<3>>::type
  37 >{}, "");
  38
  39 static_assert(std::is_same<
  40     hana::detail::type_foldl1<f, x<0>, x<1>, x<2>, x<3>, x<4>>::type,
  41     f<f<f<f<x<0>, x<1>>::type, x<2>>::type, x<3>>::type, x<4>>::type
  42 >{}, "");
  43
  44 static_assert(std::is_same<
  45     hana::detail::type_foldl1<f, x<0>, x<1>, x<2>, x<3>, x<4>, x<5>>::type,
  46     f<f<f<f<f<x<0>, x<1>>::type, x<2>>::type, x<3>>::type, x<4>>::type, x<5>>::type
  47 >{}, "");
  48
  49 static_assert(std::is_same<
  50     hana::detail::type_foldl1<f, x<0>, x<1>, x<2>, x<3>, x<4>, x<5>, x<6>>::type,
  51     f<f<f<f<f<f<x<0>, x<1>>::type, x<2>>::type, x<3>>::type, x<4>>::type, x<5>>::type, x<6>>::type
  52 >{}, "");
  53
  54 static_assert(std::is_same<
  55     hana::detail::type_foldl1<f, x<0>, x<1>, x<2>, x<3>, x<4>, x<5>, x<6>, x<7>>::type,
  56     f<f<f<f<f<f<f<x<0>, x<1>>::type, x<2>>::type, x<3>>::type, x<4>>::type, x<5>>::type, x<6>>::type, x<7>>::type
  57 >{}, "");
  58
  59 static_assert(std::is_same<
  60     hana::detail::type_foldl1<f, x<0>, x<1>, x<2>, x<3>, x<4>, x<5>, x<6>, x<7>, x<8>>::type,
  61     f<f<f<f<f<f<f<f<x<0>, x<1>>::type, x<2>>::type, x<3>>::type, x<4>>::type, x<5>>::type, x<6>>::type, x<7>>::type, x<8>>::type
  62 >{}, "");
  63
  64 int main() { }