1 | // (C) Copyright Eric Niebler 2005. |
2 | // Use, modification and distribution are subject to the |
3 | // Boost Software License, Version 1.0. (See accompanying file |
4 | // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
5 | |
6 | /* |
7 | Revision history: |
8 | 25 August 2005 : Initial version. |
9 | */ |
10 | |
11 | #include <boost/core/lightweight_test.hpp> |
12 | |
13 | /////////////////////////////////////////////////////////////////////////////// |
14 | // define a user-defined collection type and teach BOOST_FOREACH how to enumerate it |
15 | // |
16 | namespace mine |
17 | { |
18 | struct dummy {}; |
19 | char * range_begin(mine::dummy&) {return 0;} |
20 | char const * range_begin(mine::dummy const&) {return 0;} |
21 | char * range_end(mine::dummy&) {return 0;} |
22 | char const * range_end(mine::dummy const&) {return 0;} |
23 | } |
24 | |
25 | #include <boost/foreach.hpp> |
26 | |
27 | namespace boost |
28 | { |
29 | template<> |
30 | struct range_mutable_iterator<mine::dummy> |
31 | { |
32 | typedef char * type; |
33 | }; |
34 | template<> |
35 | struct range_const_iterator<mine::dummy> |
36 | { |
37 | typedef char const * type; |
38 | }; |
39 | } |
40 | |
41 | /////////////////////////////////////////////////////////////////////////////// |
42 | // test_main |
43 | // |
44 | int main() |
45 | { |
46 | // loop over a user-defined type (just make sure this compiles) |
47 | mine::dummy d; |
48 | BOOST_FOREACH( char c, d ) |
49 | { |
50 | ((void)c); // no-op |
51 | } |
52 | |
53 | return boost::report_errors(); |
54 | } |
55 | |