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

   1
   2 //  Copyright 2015 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/algorithm.hpp>
  11 #include <boost/mp11/list.hpp>
  12 #include <boost/mp11/utility.hpp>
  13 #include <boost/core/lightweight_test_trait.hpp>
  14 #include <type_traits>
  15 #include <tuple>
  16 #include <utility>
  17
  18 struct X1 {};
  19 struct X2 {};
  20 struct X3 {};
  21
  22 struct Y1 {};
  23
  24 struct Z1 {};
  25 struct Z2 {};
  26
  27 template<class T1, class T2, class T3> struct F {};
  28
  29 template<class T> struct F1 {};
  30
  31 int main()
  32 {
  33     using boost::mp11::mp_list;
  34     using boost::mp11::mp_product;
  35     using boost::mp11::mp_product_q;
  36     using boost::mp11::mp_quote;
  37
  38     {
  39         using L1 = std::tuple<X1, X2, X3>;
  40         using L2 = mp_list<Y1>;
  41         using L3 = std::pair<Z1, Z2>;
  42
  43         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_product<F, L1, L2, L3>, std::tuple<F<X1, Y1, Z1>, F<X1, Y1, Z2>, F<X2, Y1, Z1>, F<X2, Y1, Z2>, F<X3, Y1, Z1>, F<X3, Y1, Z2>>>));
  44         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_product_q<mp_quote<F>, L1, L2, L3>, std::tuple<F<X1, Y1, Z1>, F<X1, Y1, Z2>, F<X2, Y1, Z1>, F<X2, Y1, Z2>, F<X3, Y1, Z1>, F<X3, Y1, Z2>>>));
  45     }
  46
  47     {
  48         using L1 = std::tuple<X1, X2, X3>;
  49         using L2 = mp_list<>;
  50         using L3 = std::pair<Z1, Z2>;
  51
  52         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_product<F, L1, L2, L3>, std::tuple<>>));
  53         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_product_q<mp_quote<F>, L1, L2, L3>, std::tuple<>>));
  54     }
  55
  56     {
  57         using L1 = std::tuple<X1, X2, X3>;
  58         using L2 = mp_list<X1, X2, X3>;
  59
  60         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_product<F1, L1>, std::tuple<F1<X1>, F1<X2>, F1<X3>>>));
  61         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_product_q<mp_quote<F1>, L1>, std::tuple<F1<X1>, F1<X2>, F1<X3>>>));
  62
  63         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_product<F1, L2>, mp_list<F1<X1>, F1<X2>, F1<X3>>>));
  64         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_product_q<mp_quote<F1>, L2>, mp_list<F1<X1>, F1<X2>, F1<X3>>>));
  65     }
  66
  67     return boost::report_errors();
  68 }