ceph/src/boost/libs/hana/test/detail/any_of.cpp

   1 // Copyright Louis Dionne 2013-2017
   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/any_of.hpp>
   6 #include <boost/hana/detail/wrong.hpp>
   7 #include <boost/hana/integral_constant.hpp>
   8 namespace hana = boost::hana;
   9
  10
  11 template <typename I>
  12 struct is_even {
  13     static constexpr bool value = I::value % 2 == 0;
  14 };
  15
  16
  17 static_assert(!hana::detail::any_of<is_even>::value, "");
  18 static_assert(!hana::detail::any_of<is_even, hana::int_<1>>::value, "");
  19 static_assert(!hana::detail::any_of<is_even, hana::int_<1>, hana::int_<3>>::value, "");
  20 static_assert(!hana::detail::any_of<is_even, hana::int_<1>, hana::int_<3>, hana::int_<5>>::value, "");
  21 static_assert(!hana::detail::any_of<is_even, hana::int_<1>, hana::int_<3>, hana::int_<5>, hana::int_<7>>::value, "");
  22
  23 static_assert(hana::detail::any_of<is_even, hana::int_<0>>::value, "");
  24 static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<2>>::value, "");
  25 static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<2>, hana::int_<4>>::value, "");
  26 static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<2>, hana::int_<4>, hana::int_<6>>::value, "");
  27
  28 static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<1>>::value, "");
  29 static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<1>, hana::int_<2>>::value, "");
  30 static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<1>, hana::int_<2>, hana::int_<3>>::value, "");
  31 static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<1>, hana::int_<2>, hana::int_<3>, hana::int_<4>>::value, "");
  32 static_assert(hana::detail::any_of<is_even, hana::int_<1>, hana::int_<3>, hana::int_<5>, hana::int_<8>>::value, "");
  33 static_assert(hana::detail::any_of<is_even, hana::int_<1>, hana::int_<8>, hana::int_<5>, hana::int_<7>>::value, "");
  34
  35 // Make sure we short-circuit properly
  36 template <typename ...Dummy>
  37 struct fail {
  38     static_assert(hana::detail::wrong<Dummy...>::value,
  39         "this must never be instantiated");
  40 };
  41 static_assert(hana::detail::any_of<is_even, hana::int_<1>, hana::int_<2>, fail<>>::value, "");
  42 static_assert(hana::detail::any_of<is_even, hana::int_<1>, hana::int_<2>, fail<>, hana::int_<3>>::value, "");
  43 static_assert(hana::detail::any_of<is_even, hana::int_<1>, hana::int_<2>, fail<>, hana::int_<4>>::value, "");
  44
  45 int main() { }