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/Src/Dependencies/Boost/libs/phoenix/test/scope/dynamic_tests.cpp

http://hadesmem.googlecode.com/
C++ | 75 lines | 48 code | 13 blank | 14 comment | 6 complexity | 3117cd866d3edf34a280f436a03283d4 MD5 | raw file
 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
16struct my_dynamic : ::boost::phoenix::dynamic<int, std::string, double>
17{
18    my_dynamic() : num(init<0>(this)), message(init<1>(this)), real(init<2>(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
34int
35main()
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 = {-1, "Direct Init ", 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}