ceph/src/boost/libs/fusion/test/sequence/adapt_struct_named.cpp

   1 /*=============================================================================
   2     Copyright (c) 2001-2007 Joel de Guzman
   3
   4     Distributed under the Boost Software License, Version 1.0. (See accompanying
   5     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 ==============================================================================*/
   7 #include <boost/detail/lightweight_test.hpp>
   8 #include <boost/fusion/adapted/struct/adapt_struct_named.hpp>
   9 #include <boost/fusion/sequence/intrinsic/at.hpp>
  10 #include <boost/fusion/sequence/intrinsic/size.hpp>
  11 #include <boost/fusion/sequence/intrinsic/empty.hpp>
  12 #include <boost/fusion/sequence/intrinsic/front.hpp>
  13 #include <boost/fusion/sequence/intrinsic/back.hpp>
  14 #include <boost/fusion/sequence/intrinsic/value_at.hpp>
  15 #include <boost/fusion/sequence/io/out.hpp>
  16 #include <boost/fusion/container/vector/vector.hpp>
  17 #include <boost/fusion/container/list/list.hpp>
  18 #include <boost/fusion/container/generation/make_vector.hpp>
  19 #include <boost/fusion/container/vector/convert.hpp>
  20 #include <boost/fusion/sequence/comparison/equal_to.hpp>
  21 #include <boost/fusion/sequence/comparison/not_equal_to.hpp>
  22 #include <boost/fusion/sequence/comparison/less.hpp>
  23 #include <boost/fusion/sequence/comparison/less_equal.hpp>
  24 #include <boost/fusion/sequence/comparison/greater.hpp>
  25 #include <boost/fusion/sequence/comparison/greater_equal.hpp>
  26 #include <boost/fusion/mpl.hpp>
  27 #include <boost/fusion/support/is_view.hpp>
  28 #include <boost/mpl/front.hpp>
  29 #include <boost/mpl/is_sequence.hpp>
  30 #include <boost/mpl/assert.hpp>
  31 #include <iostream>
  32 #include <string>
  33
  34 namespace ns
  35 {
  36     struct point
  37     {
  38         int x;
  39         int y;
  40         int z;
  41     };
  42 }
  43
  44 #if BOOST_PP_VARIADICS
  45
  46     // this creates a fusion view: boost::fusion::adapted::point
  47     BOOST_FUSION_ADAPT_STRUCT_NAMED(
  48         ns::point, point,
  49         x,
  50         y,
  51         z
  52     )
  53
  54     // this creates a fusion view: ns1::s1
  55     struct s { int m; };
  56     BOOST_FUSION_ADAPT_STRUCT_NAMED_NS(s, (ns1), s1, m)
  57
  58 #else // BOOST_PP_VARIADICS
  59
  60     // this creates a fusion view: boost::fusion::adapted::point
  61     BOOST_FUSION_ADAPT_STRUCT_NAMED(
  62         ns::point, point,
  63         (int, x)
  64         (BOOST_FUSION_ADAPT_AUTO, y)
  65         (auto, z)
  66     )
  67
  68     // this creates a fusion view: ns1::s1
  69     struct s { int m; };
  70     BOOST_FUSION_ADAPT_STRUCT_NAMED_NS(s, (ns1), s1, (auto, m))
  71
  72 #endif
  73
  74 struct empty_struct {};
  75 BOOST_FUSION_ADAPT_STRUCT_NAMED(empty_struct, renamed_empty_struct, )
  76 BOOST_FUSION_ADAPT_STRUCT_NAMED_NS(empty_struct, (ns1), renamed_empty_struct1, )
  77
  78 int
  79 main()
  80 {
  81     using namespace boost::fusion;
  82     using namespace boost;
  83
  84     std::cout << tuple_open('[');
  85     std::cout << tuple_close(']');
  86     std::cout << tuple_delimiter(", ");
  87
  88     {
  89         BOOST_MPL_ASSERT((traits::is_view<adapted::point>));
  90         ns::point basep = {123, 456, 789};
  91         adapted::point p(basep);
  92
  93         std::cout << at_c<0>(p) << std::endl;
  94         std::cout << at_c<1>(p) << std::endl;
  95         std::cout << at_c<2>(p) << std::endl;
  96         std::cout << p << std::endl;
  97         BOOST_TEST(p == make_vector(123, 456, 789));
  98
  99         at_c<0>(p) = 6;
 100         at_c<1>(p) = 9;
 101         at_c<2>(p) = 12;
 102         BOOST_TEST(p == make_vector(6, 9, 12));
 103
 104         BOOST_STATIC_ASSERT(boost::fusion::result_of::size<adapted::point>::value == 3);
 105         BOOST_STATIC_ASSERT(!boost::fusion::result_of::empty<adapted::point>::value);
 106
 107         BOOST_TEST(front(p) == 6);
 108         BOOST_TEST(back(p) == 12);
 109     }
 110
 111     {
 112         fusion::vector<int, float, int> v1(4, 2.f, 2);
 113         ns::point p = {5, 3, 3};
 114         adapted::point v2(p);
 115
 116         fusion::vector<long, double, int> v3(5, 4., 4);
 117         BOOST_TEST(v1 < v2);
 118         BOOST_TEST(v1 <= v2);
 119         BOOST_TEST(v2 > v1);
 120         BOOST_TEST(v2 >= v1);
 121         BOOST_TEST(v2 < v3);
 122         BOOST_TEST(v2 <= v3);
 123         BOOST_TEST(v3 > v2);
 124         BOOST_TEST(v3 >= v2);
 125     }
 126
 127     {
 128         // conversion from adapted::point to vector
 129         ns::point basep = {5, 3, 3};
 130         adapted::point p(basep);
 131         fusion::vector<int, long, int> v(p);
 132         v = p;
 133     }
 134
 135     {
 136         // conversion from adapted::point to list
 137         ns::point basep = {5, 3, 3};
 138         adapted::point p(basep);
 139         fusion::list<int, long, int> l(p);
 140         l = p;
 141     }
 142
 143     { // begin/end
 144         using namespace boost::fusion;
 145         using boost::is_same;
 146
 147         typedef boost::fusion::result_of::begin<ns1::s1>::type b;
 148         typedef boost::fusion::result_of::end<ns1::s1>::type e;
 149         // this fails
 150         BOOST_MPL_ASSERT((is_same<boost::fusion::result_of::next<b>::type, e>));
 151     }
 152
 153
 154     {
 155         BOOST_MPL_ASSERT((mpl::is_sequence<adapted::point>));
 156         BOOST_MPL_ASSERT((boost::is_same<
 157             boost::fusion::result_of::value_at_c<adapted::point,0>::type
 158           , mpl::front<adapted::point>::type>));
 159     }
 160
 161     return boost::report_errors();
 162 }
 163