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1 // Boost.Range library
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2 //
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3 // Copyright Neil Groves 2009. Use, modification and
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4 // distribution is subject to the Boost Software License, Version
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5 // 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 // For more information, see http://www.boost.org/libs/range/
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9 //
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10 #ifndef BOOST_RANGE_ALGORITHM_EXT_PUSH_FRONT_HPP_INCLUDED
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11 #define BOOST_RANGE_ALGORITHM_EXT_PUSH_FRONT_HPP_INCLUDED
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12
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13 #include <boost/range/config.hpp>
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14 #include <boost/range/concepts.hpp>
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15 #include <boost/range/difference_type.hpp>
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16 #include <boost/range/begin.hpp>
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17 #include <boost/range/end.hpp>
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18 #include <boost/range/detail/implementation_help.hpp>
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19 #include <boost/assert.hpp>
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20
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21 namespace boost
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22 {
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23 namespace range
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24 {
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25
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26 template< class Container, class Range >
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27 inline Container& push_front( Container& on, const Range& from )
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28 {
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29 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<Container> ));
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30 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const Range> ));
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31 BOOST_ASSERT_MSG(!range_detail::is_same_object(on, from),
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32 "cannot copy from a container to itself");
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33 on.insert( on.begin(), boost::begin(from), boost::end(from) );
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34 return on;
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35 }
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36
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37 } // namespace range
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38 using range::push_front;
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39 } // namespace boost
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40
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41 #endif // include guard
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