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1 | /////////////////////////////////////////////////////////////////////////////// |
2 | // foreach.hpp header file | |
3 | // | |
4 | // Copyright 2010 Eric Niebler. | |
5 | // Distributed under the Boost Software License, Version 1.0. (See | |
6 | // accompanying file LICENSE_1_0.txt or copy at | |
7 | // http://www.boost.org/LICENSE_1_0.txt) | |
8 | // See http://www.boost.org/libs/foreach for documentation | |
9 | // | |
10 | // Credits: | |
11 | // Kazutoshi Satoda: for suggesting the need for a _fwd header for foreach's | |
12 | // customization points. | |
13 | ||
14 | #ifndef BOOST_FOREACH_FWD_HPP | |
15 | #define BOOST_FOREACH_FWD_HPP | |
16 | ||
17 | // This must be at global scope, hence the uglified name | |
18 | enum boost_foreach_argument_dependent_lookup_hack | |
19 | { | |
20 | boost_foreach_argument_dependent_lookup_hack_value | |
21 | }; | |
22 | ||
23 | namespace boost | |
24 | { | |
25 | ||
26 | namespace foreach | |
27 | { | |
28 | /////////////////////////////////////////////////////////////////////////////// | |
29 | // boost::foreach::tag | |
30 | // | |
31 | typedef boost_foreach_argument_dependent_lookup_hack tag; | |
32 | ||
33 | /////////////////////////////////////////////////////////////////////////////// | |
34 | // boost::foreach::is_lightweight_proxy | |
35 | // Specialize this for user-defined collection types if they are inexpensive to copy. | |
36 | // This tells BOOST_FOREACH it can avoid the rvalue/lvalue detection stuff. | |
37 | template<typename T> | |
38 | struct is_lightweight_proxy; | |
39 | ||
40 | /////////////////////////////////////////////////////////////////////////////// | |
41 | // boost::foreach::is_noncopyable | |
42 | // Specialize this for user-defined collection types if they cannot be copied. | |
43 | // This also tells BOOST_FOREACH to avoid the rvalue/lvalue detection stuff. | |
44 | template<typename T> | |
45 | struct is_noncopyable; | |
46 | ||
47 | } // namespace foreach | |
48 | ||
49 | } // namespace boost | |
50 | ||
51 | #endif |