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1 | //----------------------------------------------------------------------------- |
2 | // boost-libs variant/test/test5.cpp header file | |
3 | // See http://www.boost.org for updates, documentation, and revision history. | |
4 | //----------------------------------------------------------------------------- | |
5 | // | |
6 | // Copyright (c) 2003 | |
7 | // Eric Friedman, Itay Maman | |
8 | // | |
9 | // Distributed under the Boost Software License, Version 1.0. (See | |
10 | // accompanying file LICENSE_1_0.txt or copy at | |
11 | // http://www.boost.org/LICENSE_1_0.txt) | |
12 | ||
92f5a8d4 | 13 | #include "boost/core/lightweight_test.hpp" |
7c673cae FG |
14 | #include "boost/variant.hpp" |
15 | ||
16 | #include "jobs.h" | |
17 | ||
18 | #include <assert.h> | |
19 | #include <iostream> | |
20 | #include <string> | |
21 | #include <vector> | |
22 | ||
23 | ||
24 | void run() | |
25 | { | |
26 | using std::string; | |
27 | using boost::variant; | |
28 | using boost::apply_visitor; | |
29 | ||
30 | typedef variant<int, float, unsigned short, unsigned char> t_var1; | |
31 | typedef variant<int, t_var1, unsigned short, unsigned char> t_var2; | |
32 | typedef variant<string, int, t_var2> t_var3; | |
33 | ||
34 | t_var1 v1; | |
35 | t_var2 v2; | |
36 | t_var2 v2_second; | |
37 | t_var3 v3; | |
38 | ||
39 | const char c0 = 'x'; | |
40 | v1 = c0; | |
41 | ||
42 | //v2 and v3 are holding (aka: containing) a variant | |
43 | v2 = v1; | |
44 | v3 = v2; | |
45 | ||
46 | verify(v1, spec<int>()); | |
47 | verify(v2, spec<t_var1>()); | |
48 | verify(v3, spec<t_var2>()); | |
49 | ||
50 | ||
51 | // | |
52 | // assignment from const char (Converted to int) | |
53 | // | |
54 | v2 = c0; | |
55 | v3 = c0; | |
56 | ||
57 | verify(v2, spec<int>()); | |
58 | verify(v3, spec<int>()); | |
59 | ||
60 | ||
92f5a8d4 TL |
61 | BOOST_TEST(apply_visitor(sum_int(), v2) == c0); |
62 | BOOST_TEST(apply_visitor(sum_int(), v3) == c0); | |
7c673cae FG |
63 | |
64 | sum_int adder; | |
65 | apply_visitor(adder, v2); | |
66 | apply_visitor(adder, v3); | |
67 | ||
92f5a8d4 | 68 | BOOST_TEST(adder.result() == 2*c0); |
7c673cae FG |
69 | |
70 | // | |
71 | // A variant holding a variant | |
72 | // | |
73 | typedef variant<unsigned char, float> t_var4; | |
74 | typedef variant<string, t_var4> t_var5; | |
75 | ||
76 | t_var4 v4; | |
77 | t_var5 v5; | |
78 | ||
79 | v5 = 22.5f; | |
80 | verify(v5, spec<t_var4>(), "[V] [V] 22.5"); | |
81 | } | |
82 | ||
83 | ||
84 | ||
92f5a8d4 | 85 | int main() |
7c673cae FG |
86 | { |
87 | run(); | |
92f5a8d4 | 88 | return boost::report_errors(); |
7c673cae FG |
89 | } |
90 |