1 /*=============================================================================
2 Copyright (c) 2010 Christopher Schmidt
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
8 #include <boost/core/lightweight_test.hpp>
9 #include <boost/fusion/adapted/adt/adapt_assoc_adt.hpp>
10 #include <boost/fusion/sequence.hpp>
11 #include <boost/mpl/assert.hpp>
12 #include <boost/type_traits/is_same.hpp>
13 #include <iostream>
14 #include <string>
15
16 namespace fusion=boost::fusion;
17
18 template<typename Name, typename Age>
19 struct employee
20 {
21 private:
22 Name name;
23 Age age;
24
25 public:
26 template<typename OtherName>
27 void
set_nameemployee28 set_name(OtherName const& n)
29 {
30 name=n;
31 }
32
33 template<typename OtherAge>
34 void
set_ageemployee35 set_age(OtherAge const& a)
36 {
37 age=a;
38 }
39
get_nameemployee40 Name& get_name()
41 {
42 return name;
43 }
44
get_nameemployee45 Name const& get_name()const
46 {
47 return name;
48 }
49
get_ageemployee50 Age& get_age()
51 {
52 return age;
53 }
54
get_ageemployee55 Age const& get_age()const
56 {
57 return age;
58 }
59 };
60
61 namespace keys
62 {
63 struct name;
64 struct age;
65 }
66
67 BOOST_FUSION_ADAPT_ASSOC_TPL_ADT(
68 (Name)(Age),
69 (employee) (Name)(Age),
70 (Name&, Name const&, obj.get_name(), obj.template set_name<Val>(val), keys::name)
71 (Age&, Age const&, obj.get_age(), obj.template set_age<Val>(val), keys::age))
72
main()73 int main()
74 {
75 typedef employee<std::string, int> et;
76 typedef et const etc;
77 et e;
78 etc& ec=e;
79
80 fusion::at_key<keys::name>(e)="marshall mathers";
81 fusion::at_key<keys::age>(e)=37;
82
83 BOOST_MPL_ASSERT((
84 boost::is_same<
85 boost::fusion::result_of::value_at_key<et, keys::name>::type,
86 std::string
87 >));
88 BOOST_MPL_ASSERT((
89 boost::is_same<
90 boost::fusion::result_of::value_at_key<et, keys::name>::type,
91 boost::fusion::result_of::value_at_c<et, 0>::type
92 >));
93 BOOST_MPL_ASSERT((
94 boost::is_same<
95 boost::fusion::result_of::value_at_key<et, keys::age>::type,
96 int
97 >));
98 BOOST_MPL_ASSERT((
99 boost::is_same<
100 boost::fusion::result_of::value_at_key<et, keys::age>::type,
101 boost::fusion::result_of::value_at_c<et, 1>::type
102 >));
103
104 BOOST_MPL_ASSERT((
105 boost::is_same<
106 boost::fusion::result_of::at_key<et, keys::name>::type,
107 fusion::extension::adt_attribute_proxy<et, 0, false>
108 >));
109 BOOST_MPL_ASSERT((
110 boost::is_same<
111 boost::fusion::result_of::at_key<et, keys::age>::type,
112 fusion::extension::adt_attribute_proxy<et, 1, false>
113 >));
114 BOOST_MPL_ASSERT((
115 boost::is_same<
116 boost::fusion::result_of::at_key<et, keys::name>::type,
117 boost::fusion::result_of::front<et>::type
118 >));
119 BOOST_MPL_ASSERT((
120 boost::is_same<
121 boost::fusion::result_of::at_key<et, keys::age>::type,
122 boost::fusion::result_of::back<et>::type
123 >));
124
125 BOOST_MPL_ASSERT((
126 boost::is_same<
127 boost::fusion::result_of::at_key<etc, keys::name>::type,
128 fusion::extension::adt_attribute_proxy<et, 0, true>
129 >));
130 BOOST_MPL_ASSERT((
131 boost::is_same<
132 boost::fusion::result_of::at_key<etc, keys::age>::type,
133 fusion::extension::adt_attribute_proxy<et, 1, true>
134 >));
135 BOOST_MPL_ASSERT((
136 boost::is_same<
137 boost::fusion::result_of::at_key<etc, keys::name>::type,
138 boost::fusion::result_of::front<etc>::type
139 >));
140 BOOST_MPL_ASSERT((
141 boost::is_same<
142 boost::fusion::result_of::at_key<etc, keys::age>::type,
143 boost::fusion::result_of::back<etc>::type
144 >));
145
146 BOOST_MPL_ASSERT((
147 boost::is_same<
148 fusion::extension::adt_attribute_proxy<et, 0, false>::type,
149 std::string&
150 >));
151 BOOST_MPL_ASSERT((
152 boost::is_same<
153 fusion::extension::adt_attribute_proxy<et, 0, true>::type,
154 std::string const&
155 >));
156 BOOST_MPL_ASSERT((
157 boost::is_same<
158 fusion::extension::adt_attribute_proxy<et, 1, false>::type,
159 int&
160 >));
161 BOOST_MPL_ASSERT((
162 boost::is_same<
163 fusion::extension::adt_attribute_proxy<et, 1, true>::type,
164 int const&
165 >));
166
167 {
168 std::string& name=fusion::at_key<keys::name>(e);
169 int& age=fusion::at_key<keys::age>(e);
170 BOOST_TEST(name=="marshall mathers");
171 BOOST_TEST(age==37);
172 BOOST_TEST(fusion::at_key<keys::name>(e).get()=="marshall mathers");
173 BOOST_TEST(fusion::at_key<keys::age>(e).get()==37);
174 BOOST_TEST(fusion::front(e).get()=="marshall mathers");
175 BOOST_TEST(fusion::back(e).get()==37);
176 }
177
178 {
179 std::string const& name=fusion::at_key<keys::name>(ec);
180 int const& age=fusion::at_key<keys::age>(ec);
181 BOOST_TEST(name=="marshall mathers");
182 BOOST_TEST(age==37);
183 BOOST_TEST(fusion::at_key<keys::name>(ec).get()=="marshall mathers");
184 BOOST_TEST(fusion::at_key<keys::age>(ec).get()==37);
185 BOOST_TEST(fusion::front(ec).get()=="marshall mathers");
186 BOOST_TEST(fusion::back(ec).get()==37);
187 }
188 return boost::report_errors();
189 }
190