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