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Merge pull request #27 from Lastique/advance_generic_distance

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Use a separate template parameter for distance in advance().
This commit is contained in:
Edward Diener
2017-07-12 12:20:34 -04:00
committed by GitHub
parent b7e7e83a11 5bfbfb7716
commit 4791425000
1 changed files with 8 additions and 9 deletions
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17
include/boost/iterator/advance.hpp
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@ -9,17 +9,16 @@
#include <boost/config.hpp> #include <boost/config.hpp>
#include <boost/iterator/iterator_categories.hpp> #include <boost/iterator/iterator_categories.hpp>
#include <boost/iterator/iterator_traits.hpp>
namespace boost { namespace boost {
namespace iterators { namespace iterators {
namespace detail { namespace detail {
template <typename InputIterator> template <typename InputIterator, typename Distance>
inline BOOST_CXX14_CONSTEXPR void inline BOOST_CXX14_CONSTEXPR void
advance_impl( advance_impl(
InputIterator& it InputIterator& it
, typename iterator_difference<InputIterator>::type n , Distance n
, incrementable_traversal_tag , incrementable_traversal_tag
) )
{ {
@ -29,11 +28,11 @@ namespace iterators {
} }
} }
template <typename BidirectionalIterator> template <typename BidirectionalIterator, typename Distance>
inline BOOST_CXX14_CONSTEXPR void inline BOOST_CXX14_CONSTEXPR void
advance_impl( advance_impl(
BidirectionalIterator& it BidirectionalIterator& it
, typename iterator_difference<BidirectionalIterator>::type n , Distance n
, bidirectional_traversal_tag , bidirectional_traversal_tag
) )
{ {
@ -51,11 +50,11 @@ namespace iterators {
} }
} }
template <typename RandomAccessIterator> template <typename RandomAccessIterator, typename Distance>
inline BOOST_CXX14_CONSTEXPR void inline BOOST_CXX14_CONSTEXPR void
advance_impl( advance_impl(
RandomAccessIterator& it RandomAccessIterator& it
, typename iterator_difference<RandomAccessIterator>::type n , Distance n
, random_access_traversal_tag , random_access_traversal_tag
) )
{ {
@ -64,9 +63,9 @@ namespace iterators {
} }
namespace advance_adl_barrier { namespace advance_adl_barrier {
template <typename InputIterator> template <typename InputIterator, typename Distance>
inline BOOST_CXX14_CONSTEXPR void inline BOOST_CXX14_CONSTEXPR void
advance(InputIterator& it, typename iterator_difference<InputIterator>::type n) advance(InputIterator& it, Distance n)
{ {
detail::advance_impl( detail::advance_impl(
it, n, typename iterator_traversal<InputIterator>::type() it, n, typename iterator_traversal<InputIterator>::type()