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 T> struct F1 {};
  28 template<class T1, class T2, class T3> struct F3 {};
  29
  30 template<class...> struct F {};
  31
  32 int main()
  33 {
  34     using boost::mp11::mp_list;
  35     using boost::mp11::mp_product;
  36     using boost::mp11::mp_product_q;
  37     using boost::mp11::mp_quote;
  38
  39     {
  40         using L1 = std::tuple<X1, X2, X3>;
  41         using L2 = mp_list<Y1>;
  42         using L3 = std::pair<Z1, Z2>;
  43
  44         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_product<F3, L1, L2, L3>, std::tuple<F3<X1, Y1, Z1>, F3<X1, Y1, Z2>, F3<X2, Y1, Z1>, F3<X2, Y1, Z2>, F3<X3, Y1, Z1>, F3<X3, Y1, Z2>>>));
  45         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_product_q<mp_quote<F3>, L1, L2, L3>, std::tuple<F3<X1, Y1, Z1>, F3<X1, Y1, Z2>, F3<X2, Y1, Z1>, F3<X2, Y1, Z2>, F3<X3, Y1, Z1>, F3<X3, Y1, Z2>>>));
  46     }
  47
  48     {
  49         using L1 = std::tuple<X1, X2, X3>;
  50         using L2 = mp_list<>;
  51         using L3 = std::pair<Z1, Z2>;
  52
  53         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_product<F3, L1, L2, L3>, std::tuple<>>));
  54         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_product_q<mp_quote<F3>, L1, L2, L3>, std::tuple<>>));
  55     }
  56
  57     {
  58         using L1 = std::tuple<X1, X2, X3>;
  59         using L2 = mp_list<X1, X2, X3>;
  60
  61         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_product<F1, L1>, std::tuple<F1<X1>, F1<X2>, F1<X3>>>));
  62         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_product_q<mp_quote<F1>, L1>, std::tuple<F1<X1>, F1<X2>, F1<X3>>>));
  63
  64         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_product<F1, L2>, mp_list<F1<X1>, F1<X2>, F1<X3>>>));
  65         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_product_q<mp_quote<F1>, L2>, mp_list<F1<X1>, F1<X2>, F1<X3>>>));
  66     }
  67
  68     {
  69         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_product<F>, mp_list<F<>>>));
  70         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_product_q<mp_quote<F>>, mp_list<F<>>>));
  71     }
  72
  73     return boost::report_errors();
  74 }