ceph/src/boost/libs/mp11/test/mp_reverse_fold_q.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/algorithm.hpp>
  11 #include <boost/mp11/list.hpp>
  12 #include <boost/mp11/integral.hpp>
  13 #include <boost/mp11/bind.hpp>
  14 #include <boost/core/lightweight_test_trait.hpp>
  15 #include <type_traits>
  16 #include <tuple>
  17
  18 struct X1 {};
  19 struct X2 {};
  20 struct X3 {};
  21 struct X4 {};
  22
  23 template<class T1, class T2> struct F {};
  24
  25 int main()
  26 {
  27     using boost::mp11::mp_list;
  28     using boost::mp11::mp_reverse_fold_q;
  29     using boost::mp11::mp_quote;
  30
  31     using Q = mp_quote<F>;
  32
  33     {
  34         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<mp_list<>, void, Q>, void>));
  35         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<mp_list<X1>, void, Q>, F<X1, void>>));
  36         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<mp_list<X1, X2>, void, Q>, F<X1, F<X2, void>>>));
  37         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<mp_list<X1, X2, X3>, void, Q>, F<X1, F<X2, F<X3, void>>>>));
  38         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<mp_list<X1, X2, X3, X4>, void, Q>, F<X1, F<X2, F<X3, F<X4, void>>>>>));
  39     }
  40
  41     {
  42         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<std::tuple<>, void, Q>, void>));
  43         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<std::tuple<X1>, void, Q>, F<X1, void>>));
  44         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<std::tuple<X1, X2>, void, Q>, F<X1, F<X2, void>>>));
  45         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<std::tuple<X1, X2, X3>, void, Q>, F<X1, F<X2, F<X3, void>>>>));
  46         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<std::tuple<X1, X2, X3, X4>, void, Q>, F<X1, F<X2, F<X3, F<X4, void>>>>>));
  47     }
  48
  49     using boost::mp11::mp_bind;
  50     using boost::mp11::_1;
  51     using boost::mp11::_2;
  52
  53     using boost::mp11::mp_push_back;
  54
  55     {
  56         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<std::tuple<X1, X2, X3, X4>, mp_list<>, mp_bind<mp_push_back, _2, _1>>, mp_list<X4, X3, X2, X1>>));
  57     }
  58
  59     using boost::mp11::mp_push_front;
  60
  61     {
  62         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<std::tuple<X1, X2, X3, X4>, mp_list<>, mp_bind<mp_push_front, _2, _1>>, mp_list<X1, X2, X3, X4>>));
  63     }
  64
  65     return boost::report_errors();
  66 }