ceph/src/boost/libs/mp11/test/mp_eval_if.cpp

   1
   2 // Copyright 2015, 2017 Peter Dimov.
   3 //
   4 // Distributed under the Boost Software License, Version 1.0.
   5 //
   6 // See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt
   8
   9
  10 #include <boost/mp11/utility.hpp>
  11 #include <boost/mp11/integral.hpp>
  12 #include <boost/core/lightweight_test_trait.hpp>
  13 #include <type_traits>
  14
  15 int main()
  16 {
  17     using boost::mp11::mp_eval_if_c;
  18     using boost::mp11::mp_identity;
  19
  20     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_c<true, char[], mp_identity, void, void, void>, char[]>));
  21     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_c<false, char[], mp_identity, void()>, mp_identity<void()>>));
  22
  23     using boost::mp11::mp_eval_if;
  24     using boost::mp11::mp_eval_if_q;
  25     using boost::mp11::mp_quote;
  26
  27     using qt_identity = mp_quote<mp_identity>;
  28
  29     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if<std::true_type, char[], mp_identity, void, void, void>, char[]>));
  30     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if<std::false_type, char[], mp_identity, void()>, mp_identity<void()>>));
  31
  32     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_q<std::true_type, char[], qt_identity, void, void, void>, char[]>));
  33     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_q<std::false_type, char[], qt_identity, void()>, mp_identity<void()>>));
  34
  35     using boost::mp11::mp_int;
  36
  37     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if<mp_int<-7>, char[], mp_identity, void, void, void>, char[]>));
  38     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if<mp_int<0>, char[], mp_identity, void()>, mp_identity<void()>>));
  39
  40     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_q<mp_int<-7>, char[], qt_identity, void, void, void>, char[]>));
  41     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_q<mp_int<0>, char[], qt_identity, void()>, mp_identity<void()>>));
  42
  43     using boost::mp11::mp_size_t;
  44
  45     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if<mp_size_t<14>, char[], mp_identity, void, void, void>, char[]>));
  46     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if<mp_size_t<0>, char[], mp_identity, void()>, mp_identity<void()>>));
  47
  48     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_q<mp_size_t<14>, char[], qt_identity, void, void, void>, char[]>));
  49     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_q<mp_size_t<0>, char[], qt_identity, void()>, mp_identity<void()>>));
  50
  51     return boost::report_errors();
  52 }