ceph/src/boost/libs/hana/test/ext/std/tuple/laws.functor.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/bool.hpp>
   6 #include <boost/hana/equal.hpp>
   7 #include <boost/hana/ext/std/tuple.hpp>
   8 #include <boost/hana/functional/always.hpp>
   9 #include <boost/hana/tuple.hpp>
  10
  11 #include <laws/applicative.hpp>
  12 #include <laws/base.hpp>
  13 #include <laws/functor.hpp>
  14 #include <laws/monad.hpp>
  15 #include <laws/monad_plus.hpp>
  16
  17 #include <tuple>
  18 namespace hana = boost::hana;
  19 using hana::test::ct_eq;
  20
  21
  22 int main() {
  23     auto tuples = hana::make_tuple(
  24           std::make_tuple()
  25         , std::make_tuple(ct_eq<0>{})
  26         , std::make_tuple(ct_eq<0>{}, ct_eq<1>{})
  27         , std::make_tuple(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{})
  28         , std::make_tuple(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{})
  29     );
  30
  31     auto values = hana::make_tuple(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{});
  32
  33     auto nested_tuples = hana::make_tuple(
  34           std::make_tuple()
  35         , std::make_tuple(
  36             std::make_tuple(ct_eq<0>{}))
  37         , std::make_tuple(
  38             std::make_tuple(ct_eq<0>{}),
  39             std::make_tuple(ct_eq<1>{}, ct_eq<2>{}))
  40         , std::make_tuple(
  41             std::make_tuple(ct_eq<0>{}),
  42             std::make_tuple(ct_eq<1>{}, ct_eq<2>{}),
  43             std::make_tuple(ct_eq<3>{}, ct_eq<4>{}))
  44     );
  45
  46     auto predicates = hana::make_tuple(
  47         hana::equal.to(ct_eq<0>{}), hana::equal.to(ct_eq<1>{}), hana::equal.to(ct_eq<2>{}),
  48         hana::always(hana::false_c), hana::always(hana::true_c)
  49     );
  50
  51     hana::test::TestFunctor<hana::ext::std::tuple_tag>{tuples, values};
  52     hana::test::TestApplicative<hana::ext::std::tuple_tag>{tuples};
  53     hana::test::TestMonad<hana::ext::std::tuple_tag>{tuples, nested_tuples};
  54     hana::test::TestMonadPlus<hana::ext::std::tuple_tag>{tuples, predicates, values};
  55 }