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1 | /*=============================================================================
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2 | Copyright (c) 2003 Joel de Guzman
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3 |
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4 | Use, modification and distribution is subject to the Boost Software
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5 | License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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6 | http://www.boost.org/LICENSE_1_0.txt)
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7 | ==============================================================================*/
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8 | #if !defined(FUSION_ITERATOR_IS_ITERATOR_HPP)
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9 | #define FUSION_ITERATOR_IS_ITERATOR_HPP
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10 |
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11 | #include <boost/type_traits/is_base_and_derived.hpp>
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12 |
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13 | namespace boost { namespace fusion
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14 | {
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15 | ///////////////////////////////////////////////////////////////////////////
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16 | //
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17 | // is_iterator metafunction
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18 | //
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19 | // Given a type T, returns a value true or false if T is a
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20 | // fusion iterator or not. Usage:
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21 | //
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22 | // is_iterator<T>::value
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23 | //
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24 | ///////////////////////////////////////////////////////////////////////////
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25 | struct iterator_root;
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26 |
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27 | template <typename T>
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28 | struct is_iterator : is_base_and_derived<iterator_root, T> {};
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29 |
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30 | }}
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31 |
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32 | #endif
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