1 | /*============================================================================= |
2 | Copyright (c) 2001-2011 Hartmut Kaiser |
3 | Copyright (c) 2001-2011 Joel de Guzman |
4 | |
5 | Distributed under the Boost Software License, Version 1.0. (See accompanying |
6 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
7 | =============================================================================*/ |
8 | #include <boost/fusion/include/struct.hpp> |
9 | #include <boost/fusion/include/nview.hpp> |
10 | |
11 | #include <boost/spirit/include/qi_char.hpp> |
12 | #include <boost/spirit/include/qi_string.hpp> |
13 | #include <boost/spirit/include/qi_numeric.hpp> |
14 | #include <boost/spirit/include/qi_operator.hpp> |
15 | #include <boost/spirit/include/qi_nonterminal.hpp> |
16 | #include <boost/spirit/include/qi_auxiliary.hpp> |
17 | |
18 | #include <iostream> |
19 | #include <vector> |
20 | #include <string> |
21 | #include "test.hpp" |
22 | |
23 | /////////////////////////////////////////////////////////////////////////////// |
24 | struct test_data |
25 | { |
26 | std::string s1; |
27 | std::string s2; |
28 | int i1; |
29 | double d1; |
30 | std::string s3; |
31 | }; |
32 | |
33 | BOOST_FUSION_ADAPT_STRUCT( |
34 | test_data, |
35 | (int, i1) |
36 | (std::string, s1) |
37 | (std::string, s2) |
38 | (std::string, s3) |
39 | (double, d1) |
40 | ) |
41 | |
42 | /////////////////////////////////////////////////////////////////////////////// |
43 | struct test_int_data1 |
44 | { |
45 | int i; |
46 | }; |
47 | |
48 | // we provide a custom attribute transformation taking copy of the actual |
49 | // attribute value, simulating more complex type transformations |
50 | namespace boost { namespace spirit { namespace traits |
51 | { |
52 | template <> |
53 | struct transform_attribute<test_int_data1, int, qi::domain> |
54 | { |
55 | typedef int type; |
56 | static int pre(test_int_data1& d) { return d.i; } |
57 | static void post(test_int_data1& d, int i) { d.i = i; } |
58 | static void fail(test_int_data1&) {} |
59 | }; |
60 | }}} |
61 | |
62 | /////////////////////////////////////////////////////////////////////////////// |
63 | struct test_int_data2 |
64 | { |
65 | int i; |
66 | }; |
67 | |
68 | // we provide a simple custom attribute transformation utilizing passing the |
69 | // actual attribute by reference |
70 | namespace boost { namespace spirit { namespace traits |
71 | { |
72 | template <> |
73 | struct transform_attribute<test_int_data2, int, qi::domain> |
74 | { |
75 | typedef int& type; |
76 | static int& pre(test_int_data2& d) { return d.i; } |
77 | static void post(test_int_data2&, int const&) {} |
78 | static void fail(test_int_data2&) {} |
79 | }; |
80 | }}} |
81 | |
82 | /////////////////////////////////////////////////////////////////////////////// |
83 | int |
84 | main() |
85 | { |
86 | using spirit_test::test_attr; |
87 | namespace qi = boost::spirit::qi; |
88 | namespace fusion = boost::fusion; |
89 | |
90 | { |
91 | std::vector<test_int_data1> v; |
92 | qi::rule<char const*, int()> r = qi::int_; |
93 | |
94 | BOOST_TEST(test_attr("1,2" , r % ',', v)); |
95 | BOOST_TEST(v.size() == 2 && v[0].i == 1 && v[1].i == 2); |
96 | } |
97 | |
98 | { |
99 | std::vector<double> v; |
100 | qi::rule<char const*, int()> r = qi::int_; |
101 | |
102 | BOOST_TEST(test_attr("1,2" , r % ',', v)); |
103 | BOOST_TEST(v.size() == 2 && v[0] == 1.0 && v[1] == 2.0); |
104 | } |
105 | |
106 | { |
107 | std::vector<test_int_data1> v; |
108 | |
109 | // this won't compile as there is no defined transformation for |
110 | // test_int_data1 and double |
111 | // BOOST_TEST(test_attr("1.0,2.2", qi::attr_cast(qi::double_) % ',', v)); |
112 | // BOOST_TEST(test_attr("1.0,2.2" |
113 | // , qi::attr_cast<test_int_data1>(qi::double_) % ',', v)); |
114 | |
115 | BOOST_TEST(test_attr("1.0,2.2" |
116 | , qi::attr_cast<test_int_data1, int>(qi::double_) % ',', v)); |
117 | BOOST_TEST(v.size() == 2 && v[0].i == 1 && v[1].i == 2); |
118 | |
119 | qi::rule<char const*, int()> r = qi::double_; |
120 | |
121 | v.clear(); |
122 | BOOST_TEST(test_attr("1.0,2.0" , r % ',', v)); |
123 | BOOST_TEST(v.size() == 2 && v[0].i == 1 && v[1].i == 2); |
124 | } |
125 | |
126 | // testing explicit transformation if attribute is taken by reference |
127 | { |
128 | test_int_data2 d = { .i: 0 }; |
129 | BOOST_TEST(test_attr("1" , qi::attr_cast(qi::int_), d)); |
130 | BOOST_TEST(d.i == 1); |
131 | BOOST_TEST(test_attr("2" , qi::attr_cast<test_int_data2>(qi::int_), d)); |
132 | BOOST_TEST(d.i == 2); |
133 | BOOST_TEST(test_attr("3" , qi::attr_cast<test_int_data2, int>(qi::int_), d)); |
134 | BOOST_TEST(d.i == 3); |
135 | } |
136 | |
137 | { |
138 | std::vector<test_int_data2> v; |
139 | |
140 | BOOST_TEST(test_attr("1,2" , qi::attr_cast(qi::int_) % ',', v)); |
141 | BOOST_TEST(v.size() == 2 && v[0].i == 1 && v[1].i == 2); |
142 | |
143 | v.clear(); |
144 | BOOST_TEST(test_attr("1,2" |
145 | , qi::attr_cast<test_int_data2>(qi::int_) % ',', v)); |
146 | BOOST_TEST(v.size() == 2 && v[0].i == 1 && v[1].i == 2); |
147 | |
148 | v.clear(); |
149 | BOOST_TEST(test_attr("1,2" |
150 | , qi::attr_cast<test_int_data2, int>(qi::int_) % ',', v)); |
151 | BOOST_TEST(v.size() == 2 && v[0].i == 1 && v[1].i == 2); |
152 | } |
153 | |
154 | { |
155 | std::vector<test_int_data2> v; |
156 | qi::rule<char const*, int()> r = qi::int_; |
157 | |
158 | BOOST_TEST(test_attr("1,2" , r % ',', v)); |
159 | BOOST_TEST(v.size() == 2 && v[0].i == 1 && v[1].i == 2); |
160 | } |
161 | |
162 | { |
163 | std::vector<test_int_data2> v; |
164 | |
165 | // this won't compile as there is no defined transformation for |
166 | // test_int_data2 and double |
167 | // BOOST_TEST(test_attr("1.0,2.2", qi::attr_cast(qi::double_) % ',', v)); |
168 | // BOOST_TEST(test_attr("1.0,2.2" |
169 | // , qi::attr_cast<test_int_data2>(qi::double_) % ',', v)); |
170 | |
171 | BOOST_TEST(test_attr("1.0,2.2" |
172 | , qi::attr_cast<test_int_data2, int>(qi::double_) % ',', v)); |
173 | BOOST_TEST(v.size() == 2 && v[0].i == 1 && v[1].i == 2); |
174 | |
175 | qi::rule<char const*, int()> r = qi::double_; |
176 | |
177 | v.clear(); |
178 | BOOST_TEST(test_attr("1.0,2.0" , r % ',', v)); |
179 | BOOST_TEST(v.size() == 2 && v[0].i == 1 && v[1].i == 2); |
180 | } |
181 | |
182 | return boost::report_errors(); |
183 | } |
184 | |