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 <iostream> |
8 | #include <string> |
9 | #include <cmath> |
10 | |
11 | #include <boost/detail/lightweight_test.hpp> |
12 | #include <boost/phoenix/core.hpp> |
13 | #include <boost/phoenix/operator.hpp> |
14 | #include <boost/phoenix/scope/dynamic.hpp> |
15 | |
16 | struct my_dynamic : ::boost::phoenix::dynamic<int, std::string, double> |
17 | { |
18 | my_dynamic() : num(init<0>(scope: this)), message(init<1>(scope: this)), real(init<2>(scope: this)) {} |
19 | |
20 | member1 num; |
21 | member2 message; |
22 | member3 real; |
23 | }; |
24 | |
25 | // You may also use the macro below to achieve the same as above: |
26 | // |
27 | //BOOST_PHOENIX_DYNAMIC( |
28 | // my_dynamic, |
29 | // (int, num) |
30 | // (std::string, message) |
31 | // (double, real) |
32 | //); |
33 | |
34 | int |
35 | main() |
36 | { |
37 | using namespace boost::phoenix; |
38 | using namespace boost::phoenix::arg_names; |
39 | |
40 | my_dynamic clos; |
41 | |
42 | { // First stack frame |
43 | dynamic_frame<my_dynamic::self_type> frame(clos); |
44 | (clos.num = 123)(); |
45 | (clos.num += 456)(); |
46 | (clos.real = clos.num / 56.5)(); |
47 | (clos.message = "Hello " + std::string("World " ))(); |
48 | |
49 | { // Second stack frame |
50 | dynamic_frame<my_dynamic::self_type> frame(clos); |
51 | (clos.num = 987)(); |
52 | (clos.message = std::string("Abracadabra " ))(); |
53 | (clos.real = clos.num * 1e30)(); |
54 | |
55 | { // Third stack frame |
56 | boost::phoenix::vector3<int, std::string, double> init = {.a0: -1, .a1: "Direct Init " , .a2: 3.14}; |
57 | dynamic_frame<my_dynamic::self_type> frame(clos, init); |
58 | |
59 | (std::cout << clos.message << clos.num << ", " << clos.real << '\n')(); |
60 | BOOST_TEST(clos.num() == -1); |
61 | BOOST_TEST(clos.message() == "Direct Init " ); |
62 | } |
63 | |
64 | (std::cout << clos.message << clos.num << ", " << clos.real << '\n')(); |
65 | BOOST_TEST(clos.num() == 987); |
66 | BOOST_TEST(clos.message() == "Abracadabra " ); |
67 | } |
68 | |
69 | (std::cout << clos.message << clos.num << ", " << clos.real << '\n')(); |
70 | BOOST_TEST(clos.num() == 123+456); |
71 | BOOST_TEST(clos.message() == "Hello " + std::string("World " )); |
72 | } |
73 | |
74 | return boost::report_errors(); |
75 | } |
76 | |