mp_count_if_q.cpp 2.1 KB

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  1. // Copyright 2015, 2017 Peter Dimov.
  2. //
  3. // Distributed under the Boost Software License, Version 1.0.
  4. //
  5. // See accompanying file LICENSE_1_0.txt or copy at
  6. // http://www.boost.org/LICENSE_1_0.txt
  7. #include <boost/mp11/algorithm.hpp>
  8. #include <boost/mp11/list.hpp>
  9. #include <boost/mp11/integral.hpp>
  10. #include <boost/mp11/utility.hpp>
  11. #include <boost/core/lightweight_test_trait.hpp>
  12. #include <type_traits>
  13. #include <tuple>
  14. #include <utility>
  15. struct X1 {};
  16. int main()
  17. {
  18. using boost::mp11::mp_list;
  19. using boost::mp11::mp_count_if_q;
  20. using boost::mp11::mp_size_t;
  21. using boost::mp11::mp_quote;
  22. {
  23. using L1 = mp_list<>;
  24. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if_q<L1, mp_quote<std::is_const>>, mp_size_t<0>>));
  25. using L2 = mp_list<X1, X1 const, X1*, X1 const, X1*, X1*>;
  26. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if_q<L2, mp_quote<std::is_volatile>>, mp_size_t<0>>));
  27. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if_q<L2, mp_quote<std::is_const>>, mp_size_t<2>>));
  28. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if_q<L2, mp_quote<std::is_pointer>>, mp_size_t<3>>));
  29. }
  30. {
  31. using L1 = std::tuple<>;
  32. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if_q<L1, mp_quote<std::is_const>>, mp_size_t<0>>));
  33. using L2 = std::tuple<X1, X1 const, X1*, X1 const, X1*, X1*>;
  34. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if_q<L2, mp_quote<std::is_volatile>>, mp_size_t<0>>));
  35. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if_q<L2, mp_quote<std::is_const>>, mp_size_t<2>>));
  36. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if_q<L2, mp_quote<std::is_pointer>>, mp_size_t<3>>));
  37. }
  38. {
  39. using L2 = std::pair<X1 const, X1*>;
  40. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if_q<L2, mp_quote<std::is_volatile>>, mp_size_t<0>>));
  41. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if_q<L2, mp_quote<std::is_const>>, mp_size_t<1>>));
  42. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if_q<L2, mp_quote<std::is_pointer>>, mp_size_t<1>>));
  43. }
  44. return boost::report_errors();
  45. }