mp_transform_if_q.cpp 3.8 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687
  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. struct X2 {};
  17. struct X3 {};
  18. struct X4 {};
  19. using boost::mp11::mp_not;
  20. using boost::mp11::mp_quote;
  21. template<class T> using add_pointer = T*;
  22. using Q_add_pointer = mp_quote<add_pointer>;
  23. template<class T, class...> using is_not_ref = mp_not<std::is_reference<T>>;
  24. using Q_is_not_ref = mp_quote<is_not_ref>;
  25. template<class T1, class T2> using second = T2;
  26. using Q_second = mp_quote<second>;
  27. template<class T1, class T2, class T3> using third = T3;
  28. using Q_third = mp_quote<third>;
  29. template<class T1, class T2, class T3, class T4> using fourth = T4;
  30. using Q_fourth = mp_quote<fourth>;
  31. template<class T1, class T2, class T3, class T4, class T5> using fifth = T5;
  32. using Q_fifth = mp_quote<fifth>;
  33. int main()
  34. {
  35. using boost::mp11::mp_list;
  36. using boost::mp11::mp_transform_if_q;
  37. using boost::mp11::mp_size_t;
  38. using boost::mp11::mp_size;
  39. using boost::mp11::mp_fill;
  40. using boost::mp11::mp_iota;
  41. using L1 = mp_list<X1, X2&, X3 const, X4 const&>;
  42. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_add_pointer, L1>, mp_list<X1*, X2&, X3 const*, X4 const&>>));
  43. using L2 = std::tuple<X1, X2&, X3 const, X4 const&>;
  44. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_add_pointer, L2>, std::tuple<X1*, X2&, X3 const*, X4 const&>>));
  45. using L3 = std::pair<X1 const, X2&>;
  46. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_add_pointer, L3>, std::pair<X1 const*, X2&>>));
  47. //
  48. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_second, L1, mp_fill<L1, void>>, mp_list<void, X2&, void, X4 const&>>));
  49. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_second, L2, mp_fill<L2, void>>, std::tuple<void, X2&, void, X4 const&>>));
  50. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_second, L3, mp_fill<L3, void>>, std::pair<void, X2&>>));
  51. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_third, L1, L1, mp_iota<mp_size<L1>>>, mp_list<mp_size_t<0>, X2&, mp_size_t<2>, X4 const&>>));
  52. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_third, L2, L2, mp_iota<mp_size<L2>>>, std::tuple<mp_size_t<0>, X2&, mp_size_t<2>, X4 const&>>));
  53. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_third, L3, L3, mp_iota<mp_size<L3>>>, std::pair<mp_size_t<0>, X2&>>));
  54. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_fourth, L1, L1, L1, mp_iota<mp_size<L1>>>, mp_list<mp_size_t<0>, X2&, mp_size_t<2>, X4 const&>>));
  55. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_fourth, L2, L2, L2, mp_iota<mp_size<L2>>>, std::tuple<mp_size_t<0>, X2&, mp_size_t<2>, X4 const&>>));
  56. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_fourth, L3, L3, L3, mp_iota<mp_size<L3>>>, std::pair<mp_size_t<0>, X2&>>));
  57. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_fifth, L1, L1, L1, L1, mp_iota<mp_size<L1>>>, mp_list<mp_size_t<0>, X2&, mp_size_t<2>, X4 const&>>));
  58. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_fifth, L2, L2, L2, L2, mp_iota<mp_size<L2>>>, std::tuple<mp_size_t<0>, X2&, mp_size_t<2>, X4 const&>>));
  59. BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_fifth, L3, L3, L3, L3, mp_iota<mp_size<L3>>>, std::pair<mp_size_t<0>, X2&>>));
  60. //
  61. return boost::report_errors();
  62. }