[44] | 1 | // Boost.Range library |
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| 2 | // |
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| 3 | // Copyright Neil Groves 2008. Use, modification and |
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| 4 | // distribution is subject to the Boost Software Licence, 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 | |
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| 11 | #ifndef BOOST_RANGE_COUNTING_RANGE_HPP_INCLUDED |
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| 12 | #define BOOST_RANGE_COUNTING_RANGE_HPP_INCLUDED |
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| 13 | |
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| 14 | #include <boost/config.hpp> |
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| 15 | #if BOOST_MSVC >= 1400 |
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| 16 | #pragma warning(push) |
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| 17 | #pragma warning(disable : 4244) |
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| 18 | #endif |
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| 19 | |
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| 20 | #include <boost/range/iterator_range_core.hpp> |
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| 21 | #include <boost/range/value_type.hpp> |
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| 22 | #include <boost/iterator/counting_iterator.hpp> |
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| 23 | #include <boost/utility.hpp> |
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| 24 | |
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| 25 | namespace boost |
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| 26 | { |
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| 27 | |
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| 28 | template<class Value> |
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| 29 | inline iterator_range<counting_iterator<Value> > |
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| 30 | counting_range(Value first, Value last) |
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| 31 | { |
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| 32 | typedef counting_iterator<Value> counting_iterator_t; |
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| 33 | typedef iterator_range<counting_iterator_t> result_t; |
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| 34 | return result_t(counting_iterator_t(first), |
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| 35 | counting_iterator_t(last)); |
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| 36 | } |
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| 37 | |
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| 38 | template<class Range> |
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| 39 | inline iterator_range<counting_iterator<BOOST_DEDUCED_TYPENAME range_value<const Range>::type> > |
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| 40 | counting_range(const Range& rng) |
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| 41 | { |
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| 42 | typedef counting_iterator<BOOST_DEDUCED_TYPENAME range_value<const Range>::type> counting_iterator_t; |
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| 43 | typedef iterator_range<counting_iterator_t> result_t; |
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| 44 | return boost::empty(rng) |
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| 45 | ? result_t() |
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| 46 | : result_t( |
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| 47 | counting_iterator_t(*boost::begin(rng)), |
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| 48 | counting_iterator_t(*boost::prior(boost::end(rng)))); |
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| 49 | } |
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| 50 | |
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| 51 | template<class Range> |
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| 52 | inline iterator_range<counting_iterator<BOOST_DEDUCED_TYPENAME range_value<Range>::type> > |
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| 53 | counting_range(Range& rng) |
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| 54 | { |
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| 55 | typedef counting_iterator<BOOST_DEDUCED_TYPENAME range_value<Range>::type> counting_iterator_t; |
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| 56 | typedef iterator_range<counting_iterator_t> result_t; |
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| 57 | return boost::empty(rng) |
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| 58 | ? result_t() |
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| 59 | : result_t( |
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| 60 | counting_iterator_t(*boost::begin(rng)), |
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| 61 | counting_iterator_t(*boost::prior(boost::end(rng)))); |
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| 62 | } |
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| 63 | } // namespace boost |
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| 64 | |
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| 65 | #if BOOST_MSVC >= 1400 |
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| 66 | #pragma warning(pop) |
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| 67 | #endif |
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| 68 | |
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| 69 | #endif // include guard |
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