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fixed counting_range from a range.

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This commit is contained in:
Neil Groves
2014-02-27 17:42:32 +00:00
parent 19f0726533
commit 3af0142509
2 changed files with 42 additions and 15 deletions
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40
include/boost/range/counting_range.hpp
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@ -17,11 +17,11 @@
#include <boost/range/iterator_range_core.hpp>
#include <boost/range/value_type.hpp>
#include <boost/range/iterator.hpp>
#include <boost/iterator/counting_iterator.hpp>
namespace boost
{
template<class Value>
inline iterator_range<counting_iterator<Value> >
counting_range(Value first, Value last)
@ -33,29 +33,39 @@ namespace boost
}
template<class Range>
inline iterator_range<counting_iterator<BOOST_DEDUCED_TYPENAME range_value<const Range>::type> >
inline iterator_range<
counting_iterator<
BOOST_DEDUCED_TYPENAME range_iterator<const Range>::type
>
>
counting_range(const Range& rng)
{
typedef counting_iterator<BOOST_DEDUCED_TYPENAME range_value<const Range>::type> counting_iterator_t;
typedef counting_iterator<
BOOST_DEDUCED_TYPENAME range_iterator<const Range>::type
> counting_iterator_t;
typedef iterator_range<counting_iterator_t> result_t;
return boost::empty(rng)
? result_t()
: result_t(
counting_iterator_t(*boost::begin(rng)),
counting_iterator_t(*boost::prior(boost::end(rng))));
return result_t(counting_iterator_t(boost::begin(rng)),
counting_iterator_t(boost::end(rng)));
}
template<class Range>
inline iterator_range<counting_iterator<BOOST_DEDUCED_TYPENAME range_value<Range>::type> >
inline iterator_range<
counting_iterator<
BOOST_DEDUCED_TYPENAME range_iterator<Range>::type
>
>
counting_range(Range& rng)
{
typedef counting_iterator<BOOST_DEDUCED_TYPENAME range_value<Range>::type> counting_iterator_t;
typedef counting_iterator<
BOOST_DEDUCED_TYPENAME range_iterator<Range>::type
> counting_iterator_t;
typedef iterator_range<counting_iterator_t> result_t;
return boost::empty(rng)
? result_t()
: result_t(
counting_iterator_t(*boost::begin(rng)),
counting_iterator_t(*boost::prior(boost::end(rng))));
return result_t(counting_iterator_t(boost::begin(rng)),
counting_iterator_t(boost::end(rng)));
}
} // namespace boost