adapt_assoc_adt.cpp 4.8 KB

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  1. /*=============================================================================
  2. Copyright (c) 2010 Christopher Schmidt
  3. Distributed under the Boost Software License, Version 1.0. (See accompanying
  4. file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  5. ==============================================================================*/
  6. #include <boost/detail/lightweight_test.hpp>
  7. #include <boost/fusion/sequence.hpp>
  8. #include <boost/fusion/support.hpp>
  9. #include <boost/fusion/container/list.hpp>
  10. #include <boost/fusion/container/vector.hpp>
  11. #include <boost/fusion/container/generation/make_vector.hpp>
  12. #include <boost/fusion/adapted/adt/adapt_assoc_adt.hpp>
  13. #include <boost/mpl/assert.hpp>
  14. #include <boost/mpl/not.hpp>
  15. #include <boost/mpl/front.hpp>
  16. #include <boost/mpl/is_sequence.hpp>
  17. #include <boost/type_traits/is_same.hpp>
  18. #include <boost/static_assert.hpp>
  19. #include <iostream>
  20. #include <string>
  21. namespace ns
  22. {
  23. struct x_member;
  24. struct y_member;
  25. struct z_member;
  26. struct non_member;
  27. class point
  28. {
  29. public:
  30. point() : x(0), y(0), z(0) {}
  31. point(int in_x, int in_y, int in_z) : x(in_x), y(in_y), z(in_z) {}
  32. int get_x() const { return x; }
  33. int get_y() const { return y; }
  34. int get_z() const { return z; }
  35. void set_x(int x_) { x = x_; }
  36. void set_y(int y_) { y = y_; }
  37. void set_z(int z_) { z = z_; }
  38. private:
  39. int x;
  40. int y;
  41. int z;
  42. };
  43. }
  44. #if BOOST_PP_VARIADICS
  45. BOOST_FUSION_ADAPT_ASSOC_ADT(
  46. ns::point,
  47. (int, int, obj.get_x(), obj.set_x(val), ns::x_member)
  48. (int, int, obj.get_y(), obj.set_y(val), ns::y_member)
  49. (obj.get_z(), obj.set_z(val), ns::z_member)
  50. )
  51. #else // BOOST_PP_VARIADICS
  52. BOOST_FUSION_ADAPT_ASSOC_ADT(
  53. ns::point,
  54. (int, int, obj.get_x(), obj.set_x(val), ns::x_member)
  55. (int, int, obj.get_y(), obj.set_y(val), ns::y_member)
  56. (auto, auto, obj.get_z(), obj.set_z(val), ns::z_member)
  57. )
  58. #endif
  59. class empty_adt{};
  60. BOOST_FUSION_ADAPT_ASSOC_ADT(empty_adt,)
  61. int
  62. main()
  63. {
  64. using namespace boost::fusion;
  65. std::cout << tuple_open('[');
  66. std::cout << tuple_close(']');
  67. std::cout << tuple_delimiter(", ");
  68. {
  69. BOOST_MPL_ASSERT_NOT((traits::is_view<ns::point>));
  70. BOOST_STATIC_ASSERT(!traits::is_view<ns::point>::value);
  71. ns::point p(123, 456, 789);
  72. std::cout << at_c<0>(p) << std::endl;
  73. std::cout << at_c<1>(p) << std::endl;
  74. std::cout << at_c<2>(p) << std::endl;
  75. std::cout << p << std::endl;
  76. BOOST_TEST(p == make_vector(123, 456, 789));
  77. at_c<0>(p) = 6;
  78. at_c<1>(p) = 9;
  79. at_c<2>(p) = 12;
  80. BOOST_TEST(p == make_vector(6, 9, 12));
  81. BOOST_STATIC_ASSERT(boost::fusion::result_of::size<ns::point>::value == 3);
  82. BOOST_STATIC_ASSERT(!boost::fusion::result_of::empty<ns::point>::value);
  83. BOOST_TEST(front(p) == 6);
  84. BOOST_TEST(back(p) == 12);
  85. }
  86. {
  87. boost::fusion::vector<int, float, int> v1(4, 2.f, 2);
  88. ns::point v2(5, 3, 3);
  89. boost::fusion::vector<long, double, int> v3(5, 4., 4);
  90. BOOST_TEST(v1 < v2);
  91. BOOST_TEST(v1 <= v2);
  92. BOOST_TEST(v2 > v1);
  93. BOOST_TEST(v2 >= v1);
  94. BOOST_TEST(v2 < v3);
  95. BOOST_TEST(v2 <= v3);
  96. BOOST_TEST(v3 > v2);
  97. BOOST_TEST(v3 >= v2);
  98. }
  99. {
  100. // conversion from ns::point to vector
  101. ns::point p(5, 3, 3);
  102. boost::fusion::vector<int, long, int> v(p);
  103. v = p;
  104. }
  105. {
  106. // conversion from ns::point to list
  107. ns::point p(5, 3, 3);
  108. boost::fusion::list<int, long, int> l(p);
  109. l = p;
  110. }
  111. {
  112. BOOST_MPL_ASSERT((boost::mpl::is_sequence<ns::point>));
  113. BOOST_MPL_ASSERT((boost::is_same<
  114. boost::fusion::result_of::value_at_c<ns::point,0>::type
  115. , boost::mpl::front<ns::point>::type>));
  116. }
  117. {
  118. // assoc stuff
  119. BOOST_MPL_ASSERT((boost::fusion::result_of::has_key<ns::point, ns::x_member>));
  120. BOOST_MPL_ASSERT((boost::fusion::result_of::has_key<ns::point, ns::y_member>));
  121. BOOST_MPL_ASSERT((boost::fusion::result_of::has_key<ns::point, ns::z_member>));
  122. BOOST_MPL_ASSERT((boost::mpl::not_<boost::fusion::result_of::has_key<ns::point, ns::non_member> >));
  123. BOOST_MPL_ASSERT((boost::is_same<boost::fusion::result_of::value_at_key<ns::point, ns::x_member>::type, int>));
  124. BOOST_MPL_ASSERT((boost::is_same<boost::fusion::result_of::value_at_key<ns::point, ns::y_member>::type, int>));
  125. BOOST_MPL_ASSERT((boost::is_same<boost::fusion::result_of::value_at_key<ns::point, ns::z_member>::type, int>));
  126. ns::point p(5, 3, 1);
  127. BOOST_TEST(at_key<ns::x_member>(p) == 5);
  128. BOOST_TEST(at_key<ns::y_member>(p) == 3);
  129. BOOST_TEST(at_key<ns::z_member>(p) == 1);
  130. }
  131. return boost::report_errors();
  132. }