File: define_struct_inline.cpp

package info (click to toggle)
boost1.83 1.83.0-5
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 545,632 kB
  • sloc: cpp: 3,857,086; xml: 125,552; ansic: 34,414; python: 25,887; asm: 5,276; sh: 4,799; ada: 1,681; makefile: 1,629; perl: 1,212; pascal: 1,139; sql: 810; yacc: 478; ruby: 102; lisp: 24; csh: 6
file content (153 lines) | stat: -rw-r--r-- 3,930 bytes parent folder | download | duplicates (13)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
/*=============================================================================
    Copyright (c) 2010, 2012 Christopher Schmidt, Nathan Ridge

    Distributed under the Boost Software License, Version 1.0. (See accompanying
    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
==============================================================================*/

#include <boost/detail/lightweight_test.hpp>
#include <boost/fusion/sequence.hpp>
#include <boost/fusion/container.hpp>
#include <boost/fusion/support.hpp>
#include <boost/fusion/sequence/io/out.hpp>
#include <boost/fusion/adapted/struct/define_struct_inline.hpp>
#include <boost/preprocessor/empty.hpp>
#include <boost/mpl/assert.hpp>
#include <boost/static_assert.hpp>
#include <iostream>
#include <string>

struct cls
{
    BOOST_FUSION_DEFINE_STRUCT_INLINE(
        point,
        (int, x)
        (int, y)
    )
};

template <typename = int>
struct tpl_cls
{
    BOOST_FUSION_DEFINE_STRUCT_INLINE(
        point,
        (int, x)
        (int, y)
    )
};

namespace ns
{
    BOOST_FUSION_DEFINE_STRUCT_INLINE(s, (int, m))
            
    BOOST_FUSION_DEFINE_STRUCT_INLINE(empty_struct, )

    // Testing non-constexpr compatible types
    BOOST_FUSION_DEFINE_STRUCT_INLINE(
        employee, 
        (std::string, name)
        (std::string, nickname)
    )
}

template <typename Point>
void run_test()
{
    using namespace boost::fusion;

    std::cout << tuple_open('[');
    std::cout << tuple_close(']');
    std::cout << tuple_delimiter(", ");

    {
        BOOST_STATIC_ASSERT(boost::fusion::result_of::size<ns::empty_struct>::value == 0);
        BOOST_STATIC_ASSERT(boost::fusion::result_of::empty<ns::empty_struct>::value);
    }
    
    {
        BOOST_MPL_ASSERT_NOT((traits::is_view<Point>));
        BOOST_STATIC_ASSERT(!traits::is_view<Point>::value);
        Point p(123, 456);

        std::cout << at_c<0>(p) << std::endl;
        std::cout << at_c<1>(p) << std::endl;
        std::cout << p << std::endl;
        BOOST_TEST(p == make_vector(123, 456));

        at_c<0>(p) = 6;
        at_c<1>(p) = 9;
        BOOST_TEST(p == make_vector(6, 9));

        BOOST_STATIC_ASSERT(boost::fusion::result_of::size<Point>::value == 2);
        BOOST_STATIC_ASSERT(!boost::fusion::result_of::empty<Point>::value);

        BOOST_TEST(front(p) == 6);
        BOOST_TEST(back(p) == 9);
    }

    {
        vector<int, float> v1(4, 2.0f);
        Point v2(5, 3);
        vector<long, double> v3(5, 4.);
        BOOST_TEST(v1 < v2);
        BOOST_TEST(v1 <= v2);
        BOOST_TEST(v2 > v1);
        BOOST_TEST(v2 >= v1);
        BOOST_TEST(v2 < v3);
        BOOST_TEST(v2 <= v3);
        BOOST_TEST(v3 > v2);
        BOOST_TEST(v3 >= v2);
    }

    {
        // conversion from Point to vector
        Point p(5, 3);
        vector<int, long> v(p);
        v = p;
    }

    {
        // conversion from Point to list
        Point p(5, 3);
        list<int, long> l(p);
        l = p;
    }

    { // begin/end
        using namespace boost::fusion;

        typedef boost::fusion::result_of::begin<ns::s>::type b;
        typedef boost::fusion::result_of::end<ns::s>::type e;
        // this fails
        BOOST_MPL_ASSERT((boost::is_same<boost::fusion::result_of::next<b>::type, e>));
    }

    {
        Point p = make_list(5,3);
        BOOST_TEST(p == make_vector(5,3));

        p = make_list(3,5);
        BOOST_TEST(p == make_vector(3,5));
    }
}

int
main()
{
    run_test<cls::point>();        // test with non-template enclosing class
    run_test<tpl_cls<>::point>();  // test with template enclosing class

    {
        using namespace boost::fusion;

        ns::employee emp = make_list("John Doe", "jdoe"); 
        std::cout << at_c<0>(emp) << std::endl;
        std::cout << at_c<1>(emp) << std::endl;

        BOOST_TEST(emp == make_vector("John Doe", "jdoe"));
    }

    return boost::report_errors();

}