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67 lines
2.2 KiB
67 lines
2.2 KiB
// Copyright Neil Groves 2010. Use, modification and |
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// distribution is subject to the Boost Software License, Version |
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// 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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// http://www.boost.org/LICENSE_1_0.txt) |
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// |
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// |
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// For more information, see http://www.boost.org/libs/range/ |
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// |
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#ifndef BOOST_RANGE_COUNTING_RANGE_HPP_INCLUDED |
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#define BOOST_RANGE_COUNTING_RANGE_HPP_INCLUDED |
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#include <boost/config.hpp> |
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#if BOOST_MSVC >= 1400 |
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#pragma warning(push) |
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#pragma warning(disable : 4244) |
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#endif |
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#include <boost/range/iterator_range_core.hpp> |
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#include <boost/range/value_type.hpp> |
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#include <boost/iterator/counting_iterator.hpp> |
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#include <boost/utility.hpp> |
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namespace boost |
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{ |
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template<class Value> |
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inline iterator_range<counting_iterator<Value> > |
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counting_range(Value first, Value last) |
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{ |
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typedef counting_iterator<Value> counting_iterator_t; |
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typedef iterator_range<counting_iterator_t> result_t; |
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return result_t(counting_iterator_t(first), |
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counting_iterator_t(last)); |
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} |
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template<class Range> |
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inline iterator_range<counting_iterator<BOOST_DEDUCED_TYPENAME range_value<const Range>::type> > |
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counting_range(const Range& rng) |
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{ |
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typedef counting_iterator<BOOST_DEDUCED_TYPENAME range_value<const Range>::type> counting_iterator_t; |
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typedef iterator_range<counting_iterator_t> result_t; |
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return boost::empty(rng) |
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? result_t() |
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: result_t( |
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counting_iterator_t(*boost::begin(rng)), |
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counting_iterator_t(*boost::prior(boost::end(rng)))); |
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} |
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template<class Range> |
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inline iterator_range<counting_iterator<BOOST_DEDUCED_TYPENAME range_value<Range>::type> > |
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counting_range(Range& rng) |
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{ |
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typedef counting_iterator<BOOST_DEDUCED_TYPENAME range_value<Range>::type> counting_iterator_t; |
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typedef iterator_range<counting_iterator_t> result_t; |
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return boost::empty(rng) |
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? result_t() |
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: result_t( |
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counting_iterator_t(*boost::begin(rng)), |
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counting_iterator_t(*boost::prior(boost::end(rng)))); |
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} |
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} // namespace boost |
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#if BOOST_MSVC >= 1400 |
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#pragma warning(pop) |
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#endif |
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#endif // include guard
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