ceph/src/boost/libs/hana/test/basic_tuple/unpack.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/assert.hpp>
   6 #include <boost/hana/basic_tuple.hpp>
   7 #include <boost/hana/equal.hpp>
   8 #include <boost/hana/unpack.hpp>
   9
  10 #include <laws/base.hpp>
  11 namespace hana = boost::hana;
  12 using hana::test::ct_eq;
  13
  14
  15 int main() {
  16     hana::test::_injection<0> f{};
  17
  18     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  19         hana::unpack(hana::make_basic_tuple(), f),
  20         f()
  21     ));
  22
  23     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  24         hana::unpack(hana::make_basic_tuple(ct_eq<0>{}), f),
  25         f(ct_eq<0>{})
  26     ));
  27
  28     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  29         hana::unpack(hana::make_basic_tuple(ct_eq<0>{}, ct_eq<1>{}), f),
  30         f(ct_eq<0>{}, ct_eq<1>{})
  31     ));
  32
  33     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  34         hana::unpack(hana::make_basic_tuple(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}), f),
  35         f(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{})
  36     ));
  37 }