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Merge pull request #31 from Lastique/next_prior_use_traversal

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Use Boost.Iterator to advance iterators.
This commit is contained in:
Andrey Semashev 2017-07-13 21:04:18 +03:00 committed by GitHub
commit 06ae661775
1 changed files with 5 additions and 3 deletions
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8
include/boost/next_prior.hpp
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@ -22,6 +22,8 @@
#include <boost/type_traits/has_plus_assign.hpp>
#include <boost/type_traits/has_minus.hpp>
#include <boost/type_traits/has_minus_assign.hpp>
#include <boost/iterator/advance.hpp>
#include <boost/iterator/reverse_iterator.hpp>
namespace boost {
@ -101,7 +103,7 @@ struct next_advance_impl< T, Distance, true >
{
static T call(T x, Distance n)
{
std::advance(x, n);
boost::iterators::advance(x, n);
return x;
}
};
@ -147,8 +149,8 @@ struct prior_advance_impl< T, Distance, true >
static T call(T x, Distance n)
{
// Avoid negating n to sidestep possible integer overflow
std::reverse_iterator< T > rx(x);
std::advance(rx, n);
boost::iterators::reverse_iterator< T > rx(x);
boost::iterators::advance(rx, n);
return rx.base();
}
};